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Merge pull request 'feat: add terrain generation using perlin noise' (#12) from terrain-generation-second-approach into master

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Reviewed-on: #12
This commit is contained in:
Mateusz Romański 2022-01-25 12:18:30 +01:00
commit cef7267f78
21 changed files with 972 additions and 878 deletions
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enc_temp_folder/56a7f5f31b1538028f7329a2820dd5/main.cpp
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#define STB_IMAGE_IMPLEMENTATION
#include "glew.h"
#include "freeglut.h"
#include "glm.hpp"
#include "ext.hpp"
#include <iostream>
#include <cmath>
#include <vector>
#include <random>
#include "Shader_Loader.h"
#include "Render_Utils.h"
#include "Texture.h"
#include "Camera.h"
#include "SOIL/stb_image_aug.h"
GLuint skyboxProgram, skyboxBuffer;
GLuint bubbleProgram;
GLuint programColor;
GLuint programTexture;
GLuint textureSubmarine;
GLuint textureBubble;
GLuint textureFish;
unsigned int cubemapTexture, skyboxVAO;
unsigned int cubeVAO, cubeVBO;
float skyboxVerticeParameter = 50.0f;
float skyboxBoundary = 48.0f;
std::vector<glm::vec3> bubbleArray[300];
float old_x, old_y = -1;
glm::vec3 cursorDiff;
glm::vec3 lightDir = glm::normalize(glm::vec3(0.0f, skyboxVerticeParameter, 0.0f));
glm::vec3 cameraPos = glm::vec3(0, 0, 0);
glm::vec3 oldCameraPos = glm::vec3(0, 0, 5);
glm::vec3 cameraDir; // Wektor "do przodu" kamery
glm::vec3 cameraSide; // Wektor "w bok" kamery
float cameraAngle = 0;
glm::quat rotation = glm::quat(1, 0, 0, 0);
glm::mat4 cameraMatrix, perspectiveMatrix;
Core::Shader_Loader shaderLoader;
Core::RenderContext submarineContext;
Core::RenderContext fishContext;
Core::RenderContext bubbleContext;
std::vector<glm::vec3> fishKeyPoints({
glm::vec3(-18.0f, -10.0f, -10.0f),
glm::vec3(-10.0f, -5.0f, -12.0f),
glm::vec3(8.0f, -3.0f, -3.0f),
glm::vec3(5.0f, 0.0f, 3.0f),
glm::vec3(3.0f, 2.0f, 4.0f),
glm::vec3(8.0f, 5.0f, 9.0f),
glm::vec3(14.0f, 6.0f, 15.0f),
glm::vec3(15.0f, 12.0f, 12.0f),
glm::vec3(10.0f, 17.0f, 15.0f),
glm::vec3(5.0f, 10.0f, 7.0f),
glm::vec3(-1.0f, 4.0f, 8.0f),
glm::vec3(-8.0f, 0.0f, 3.0f),
glm::vec3(-12.0f, -6.0f, -3.0f),
glm::vec3(-15.0f, -8.0f, -6.0f),
glm::vec3(-18.0f, -10.0f, -10.0f),
});
std::vector<glm::quat> keyRotation;
std::vector<Core::Node> fish;
std::string skyboxTextures[6] = {
"models/skybox/right.jpg",
"models/skybox/left.jpg",
"models/skybox/top.jpg",
"models/skybox/bottom.jpg",
"models/skybox/front.jpg",
"models/skybox/back.jpg"
};
float cubeVertices[] = {
// positions // normals
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f
};
float skyboxVertices[] = {
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter
};
bool isInBoundaries(glm::vec3 nextPosition) {
return nextPosition.z > -skyboxBoundary && nextPosition.z < skyboxBoundary&& nextPosition.y > -skyboxBoundary &&
nextPosition.y < skyboxBoundary&& nextPosition.x < skyboxBoundary&& nextPosition.x > -skyboxBoundary;
}
std::random_device rd; // obtain a random number from hardware
std::mt19937 gen(rd()); // seed the generator
std::uniform_int_distribution<> distr(-skyboxVerticeParameter, skyboxVerticeParameter); // define the range
std::vector<glm::vec3> genBubbleKeyPoints() {
float random1 = distr(gen);
float random2 = distr(gen);
std::vector<glm::vec3> bubbleKeyPoints({
glm::vec3(random1 , -skyboxVerticeParameter, random2),
glm::vec3(random1 , skyboxVerticeParameter, random2)
}
);
return bubbleKeyPoints;
};
void generateBubbleArray() {
for (int i = 0; i < 300; i++) {
bubbleArray[i] = genBubbleKeyPoints();
}
}
void keyboard(unsigned char key, int x, int y)
{
float angleSpeed = 10.f;
float moveSpeed = 1.0f;
glm::vec3 nextPosition;
switch (key)
{
case 'z': cursorDiff.z -= angleSpeed; break;
case 'x': cursorDiff.z += angleSpeed; break;
case 'w':
nextPosition = cameraPos + (cameraDir * moveSpeed);
if (isInBoundaries(nextPosition)) {
cameraPos = nextPosition;
}
break;
case 's':
nextPosition = cameraPos - (cameraDir * moveSpeed);
if (isInBoundaries(nextPosition)) {
cameraPos = nextPosition;
}
break;
case 'd':
nextPosition = cameraPos + (cameraSide * moveSpeed);
if (isInBoundaries(nextPosition)) {
cameraPos = nextPosition;
}
break;
case 'a':
nextPosition = cameraPos - (cameraSide * moveSpeed);
if (isInBoundaries(nextPosition)) {
cameraPos = nextPosition;
}
break;
}
}
void mouse(int x, int y)
{
if (old_x >= 0) {
cursorDiff.x = x - old_x;
cursorDiff.y = y - old_y;
}
old_x = x;
old_y = y;
if (x < 100 || x > 800 - 100) { //you can use values other than 100 for the screen edges if you like, kind of seems to depend on your mouse sensitivity for what ends up working best
old_x = 800 / 2; //centers the last known position, this way there isn't an odd jump with your cam as it resets
old_y = 800 / 2;
glutWarpPointer(800 / 2, 800 / 2); //centers the cursor
}
else if (y < 100 || y > 800 - 100) {
old_x = 800 / 2;
old_y = 800 / 2;
glutWarpPointer(800 / 2, 800 / 2);
}
}
glm::mat4 createCameraMatrix()
{
glm::quat rotation_x = glm::angleAxis(cursorDiff.y * 0.03f, glm::vec3(1, 0, 0));
cursorDiff.y = 0;
glm::quat rotation_y = glm::angleAxis(cursorDiff.x * 0.03f, glm::vec3(0, 1, 0));
cursorDiff.x = 0;
glm::quat rotation_z = glm::angleAxis(cursorDiff.z * 0.03f, glm::vec3(0, 0, 1));
cursorDiff.z = 0;
glm::quat rotationChange = rotation_x * rotation_y * rotation_z;
rotation = glm::normalize(rotationChange * rotation);
cameraDir = glm::inverse(rotation) * glm::vec3(0, 0, -1);
cameraSide = glm::inverse(rotation) * glm::vec3(1, 0, 0);
return Core::createViewMatrixQuat(cameraPos, rotation);
}
std::vector<glm::vec3> changeKeyPoints(std::vector<glm::vec3> keyPoints, glm::vec3 toChange) {
std::vector<glm::vec3> result;
int size = keyPoints.size();
glm::vec3 change;
for (int i = 0; i < size; i++) {
change.x = keyPoints[i].x + toChange.x;
change.y = keyPoints[i].y + toChange.y;
change.z = keyPoints[i].z + toChange.z;
result.push_back(change);
}
return result;
}
glm::mat4 animationMatrix(float time, glm::vec3 change, std::vector<glm::vec3> keyPoints, glm::vec3 scaleValue, float speed) {
time = time * speed;
std::vector<float> distances;
std::vector<glm::vec3> newKeyPoints = changeKeyPoints(keyPoints, change);
float timeStep = 0;
for (int i = 0; i < keyPoints.size() - 1; i++) {
timeStep += (keyPoints[i] - keyPoints[i + 1]).length();
distances.push_back((keyPoints[i] - keyPoints[i + 1]).length());
}
time = fmod(time, timeStep);
//index of first keyPoint
int index = 0;
while (distances[index] <= time) {
time = time - distances[index];
index += 1;
}
float t = time / distances[index];
int size = keyPoints.size();
int rotationSize = keyRotation.size();
glm::vec3 pos = glm::catmullRom(newKeyPoints[std::max(0, (index - 1) % size)], newKeyPoints[(index) % size], newKeyPoints[(index + 1) % size], newKeyPoints[(index + 2) % size], t);
glm::quat divideByFour = glm::quat(0.25f, 0.25f, 0.25f, 0.25f);
auto a1 = keyRotation[index % rotationSize] * glm::exp(-(glm::log(glm::inverse(keyRotation[index % rotationSize]) * keyRotation[std::max(0, (index - 1) % rotationSize)]) + glm::log(glm::inverse(keyRotation[index % rotationSize]) * keyRotation[(index + 1) % rotationSize])) * divideByFour);
auto a2 = keyRotation[(index + 1) % rotationSize] * glm::exp(-(glm::log(glm::inverse(keyRotation[(index + 1) % rotationSize]) * keyRotation[index % rotationSize]) + glm::log(glm::inverse(keyRotation[(index + 1) % rotationSize]) * keyRotation[(index + 2) % rotationSize])) * divideByFour);
auto animationRotation = glm::squad(keyRotation[index % rotationSize], keyRotation[(index + 1) % rotationSize], a1, a2, t);
glm::mat4 result = glm::translate(pos) * glm::scale(glm::vec3(scaleValue)) * glm::mat4_cast(animationRotation);
return result;
}
void drawObjectTexture(Core::RenderContext context, glm::mat4 modelMatrix, GLuint textureId, GLuint program)
{
glUseProgram(program);
glUniform3f(glGetUniformLocation(program, "lightDir"), lightDir.x, lightDir.y, lightDir.z);
Core::SetActiveTexture(textureId, "textureSampler", program, 0);
glm::mat4 transformation = perspectiveMatrix * cameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(program, "modelViewProjectionMatrix"), 1, GL_FALSE, (float*)&transformation);
glUniformMatrix4fv(glGetUniformLocation(program, "modelMatrix"), 1, GL_FALSE, (float*)&modelMatrix);
Core::DrawContext(context);
glUseProgram(0);
}
void renderScene()
{
cameraMatrix = createCameraMatrix();
perspectiveMatrix = Core::createPerspectiveMatrix();
glClearColor(0.219f, 0.407f, 0.658f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
float time = glutGet(GLUT_ELAPSED_TIME) / 1000.f;
glUseProgram(skyboxProgram);
glUniform1i(glGetUniformLocation(skyboxProgram, "skybox"), 0);
glm::mat4 transformation = perspectiveMatrix * cameraMatrix;
glUniformMatrix4fv(glGetUniformLocation(skyboxProgram, "projectionViewMatrix"), 1, GL_FALSE, (float*)&transformation);
glBindVertexArray(skyboxVAO);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubemapTexture);
glDrawArrays(GL_TRIANGLES, 0, 36);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glm::mat4 submarineInitialTransformation = glm::translate(glm::vec3(0, -0.5, -0.4)) * glm::rotate(glm::radians(180.0f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(0.25f));
glm::mat4 submarineModelMatrix = glm::translate(cameraPos + cameraDir) * glm::mat4_cast(glm::inverse(rotation)) * submarineInitialTransformation;
glm::mat4 bubbleInitialTransformation = glm::translate(glm::vec3(0, -0.5, -0.4)) * glm::rotate(glm::radians(180.0f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(0.5f));
glm::vec3 change1 = glm::vec3(0, 3, 0);
glm::vec3 change2 = glm::vec3(0, 0, 0);
glm::vec3 change3 = glm::vec3(3, 0, 0);
glm::vec3 change4 = glm::vec3(0, 2, 1);
glm::vec3 change0 = glm::vec3(0, 0, 0);
for (int j = 0; j < 100; j++) {
drawObjectTexture(bubbleContext, animationMatrix(time + j, change0, bubbleArray[j], glm::vec3(0.04f), 0.2f), cubemapTexture, bubbleProgram);
}
for (int i = 0; i < 5; i++) {
if (time > -10) {
drawObjectTexture(fishContext, animationMatrix(time + 15, change1, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
drawObjectTexture(fishContext, animationMatrix(time + 15, change2, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
drawObjectTexture(fishContext, animationMatrix(time + 15, change3, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
drawObjectTexture(fishContext, animationMatrix(time + 15, change4, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
time -= 6;
}
}
//drawObjectTexture(bubbleContext, submarineInitialTransformation, cubemapTexture, bubbleProgram);
drawObjectTexture(submarineContext, submarineModelMatrix, textureSubmarine, programTexture);
glutSwapBuffers();
}
void loadModelToContext(std::string path, Core::RenderContext& context)
{
Assimp::Importer import;
const aiScene* scene = import.ReadFile(path, aiProcess_Triangulate | aiProcess_CalcTangentSpace);
if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode)
{
std::cout << "ERROR::ASSIMP::" << import.GetErrorString() << std::endl;
return;
}
context.initFromAssimpMesh(scene->mMeshes[0]);
}
unsigned int loadCubemap()
{
unsigned int textureID;
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_CUBE_MAP, textureID);
int width, height, nrChannels;
for (unsigned int i = 0; i < 6; i++)
{
unsigned char* data = stbi_load(skyboxTextures[i].c_str(), &width, &height, &nrChannels, STBI_rgb_alpha);
if (data)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data
);
stbi_image_free(data);
}
else
{
std::cout << stbi_failure_reason() << std::endl;
std::cout << "Cubemap tex failed to load at path: " << skyboxTextures[i] << std::endl;
stbi_image_free(data);
}
}
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
return textureID;
}
void initSkybox()
{
glGenVertexArrays(1, &skyboxVAO);
glBindVertexArray(skyboxVAO);
glGenBuffers(1, &skyboxBuffer);
glBindBuffer(GL_ARRAY_BUFFER, skyboxBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(skyboxVertices), &skyboxVertices, GL_STATIC_DRAW);
GLuint vPosition = glGetAttribLocation(skyboxProgram, "aPos");
glEnableVertexAttribArray(vPosition);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(skyboxVertices), skyboxVertices);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
}
void initKeyRotation() {
glm::vec3 oldDirection = glm::vec3(0, 0, 1);
glm::quat oldRotationCamera = glm::quat(1, 0, 0, 0);
glm::vec3 direction;
glm::quat rotation;
for (int i = 0; i < fishKeyPoints.size() - 1; i++) {
//3.1
direction = glm::normalize(fishKeyPoints[i + 1] - fishKeyPoints[i]);
//3.2
rotation = glm::normalize(glm::rotationCamera(oldDirection, direction) * oldRotationCamera);
//3.3
keyRotation.push_back(rotation);
//3.4
oldDirection = direction;
oldRotationCamera = rotation;
}
keyRotation.push_back(glm::quat(1, 0, 0, 0));
}
void initCube()
{
glGenVertexArrays(1, &cubeVAO);
glGenBuffers(1, &cubeVBO);
glBindVertexArray(cubeVAO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(cubeVertices), &cubeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
}
void init()
{
glEnable(GL_DEPTH_TEST);
programColor = shaderLoader.CreateProgram((char*)"shaders/shader_color.vert", (char*)"shaders/shader_color.frag");
programTexture = shaderLoader.CreateProgram((char*)"shaders/shader_tex.vert", (char*)"shaders/shader_tex.frag");
skyboxProgram = shaderLoader.CreateProgram((char*)"shaders/skybox.vert", (char*)"shaders/skybox.frag");
bubbleProgram = shaderLoader.CreateProgram((char*)"shaders/bubble.vert", (char*)"shaders/bubble.frag");
cubemapTexture = loadCubemap();
loadModelToContext("models/submarine.obj", submarineContext);
textureSubmarine = Core::LoadTexture("textures/submarine.png");
loadModelToContext("models/fish.obj", fishContext);
textureFish = Core::LoadTexture("textures/fish.png");
initKeyRotation();
loadModelToContext("models/submarine.obj", submarineContext);
textureSubmarine = Core::LoadTexture("textures/submarine.png");
loadModelToContext("models/sphere.obj", bubbleContext);
textureBubble = Core::LoadTexture("textures/bubble.png");
generateBubbleArray();
initCube();
initSkybox();
}
void shutdown()
{
shaderLoader.DeleteProgram(programColor);
shaderLoader.DeleteProgram(programTexture);
shaderLoader.DeleteProgram(skyboxProgram);
shaderLoader.DeleteProgram(bubbleProgram);
}
void idle()
{
glutPostRedisplay();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
glutInitWindowPosition(200, 200);
glutInitWindowSize(800, 800);
glutCreateWindow("Water and shit");
glewInit();
init();
glutKeyboardFunc(keyboard);
glutPassiveMotionFunc(mouse);
glutDisplayFunc(renderScene);
glutIdleFunc(idle);
glutSetCursor(GLUT_CURSOR_NONE);
glutMainLoop();
shutdown();
return 0;
}

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grafika_projekt/Debug/Render_Utils.obj
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grafika_projekt/Textures.h
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#pragma once
#include "glew.h"
#include "freeglut.h"
#include <string>
#include <iostream>
namespace Core
{
GLuint LoadTexture(const char* filepath);
// textureID - identyfikator tekstury otrzymany z funkcji LoadTexture
// shaderVariableName - nazwa zmiennej typu 'sampler2D' w shaderze, z ktora ma zostac powiazana tekstura
// programID - identyfikator aktualnego programu karty graficznej
// textureUnit - indeks jednostki teksturujacej - liczba od 0 do 7. Jezeli uzywa sie wielu tekstur w jednym shaderze, to kazda z nich nalezy powiazac z inna jednostka.
void SetActiveTexture(GLuint textureID, const char* shaderVariableName, GLuint programID, int textureUnit);

9
grafika_projekt/grafika_projekt.vcxproj
View File

@ -142,6 +142,8 @@
</Link>
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="src\Engine.cpp" />
<ClCompile Include="src\HeightGenerator.cpp" />
<ClCompile Include="src\Camera.cpp" />
<ClCompile Include="src\main.cpp" />
<ClCompile Include="src\Render_Utils.cpp" />
@ -151,9 +153,14 @@
<ClCompile Include="src\SOIL\SOIL.c" />
<ClCompile Include="src\SOIL\stb_image_aug.c" />
<ClCompile Include="src\Texture.cpp" />
<ClCompile Include="src\Terrain.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="src\Engine.h" />
<ClInclude Include="src\HeightGenerator.h" />
<ClInclude Include="src\Camera.h" />
<ClInclude Include="src\mesh.h" />
<ClInclude Include="src\model.h" />
<ClInclude Include="src\objload.h" />
<ClInclude Include="src\Render_Utils.h" />
<ClInclude Include="src\Shader_Loader.h" />
@ -164,7 +171,7 @@
<ClInclude Include="src\SOIL\stbi_DDS_aug_c.h" />
<ClInclude Include="src\SOIL\stb_image_aug.h" />
<ClInclude Include="src\Texture.h" />
<ClInclude Include="Textures.h" />
<ClInclude Include="src\Terrain.h" />
</ItemGroup>
<ItemGroup>
<None Include="assimp-vc141-mt.dll" />

23
grafika_projekt/grafika_projekt.vcxproj.filters
View File

@ -42,6 +42,15 @@
<ClCompile Include="src\Render_Utils.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="src\HeightGenerator.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="src\Terrain.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="src\Engine.cpp">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="src\Shader_Loader.h">
@ -77,7 +86,19 @@
<ClInclude Include="src\objload.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="Textures.h">
<ClInclude Include="src\HeightGenerator.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="src\Terrain.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="src\mesh.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="src\model.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="src\Engine.h">
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>

18
grafika_projekt/models/plane.obj Normal file
View File

@ -0,0 +1,18 @@
v 0 50 0
v 100 30 0
v 0 1 100
v 100 100 100
vt 0 0
vt 20 0
vt 0 20
vt 20 20
vn 0.61 3.67 -0.78
vn 0.99 2.89 -0.13
vn 0.14 7.02 -0.98
vn 0.5 7.3 -0.86
s off
f 1/1/1 3/3/3 2/2/2
f 2/2/2 3/3/3 4/4/4

1
grafika_projekt/shaders/shader_tex.frag
View File

@ -2,7 +2,6 @@
uniform sampler2D textureSampler;
uniform vec3 lightDir;
uniform vec3 lightPos;
uniform vec3 cameraPos;
uniform vec3 objectColor;

2
grafika_projekt/src/Camera.h
View File

@ -5,7 +5,7 @@
namespace Core
{
glm::mat4 createPerspectiveMatrix(float zNear = 0.1f, float zFar = 200.0f);
glm::mat4 createPerspectiveMatrix(float zNear = 0.1f, float zFar = 500.0f);
// position - pozycja kamery
// forward - wektor "do przodu" kamery (jednostkowy)

180
grafika_projekt/src/Engine.cpp Normal file
View File

@ -0,0 +1,180 @@
#include "Engine.h"
void Core::Engine::initShaderPrograms() {
this->textureShader = shaderLoader.CreateProgram((char*)"shaders/shader_tex.vert", (char*)"shaders/shader_tex.frag");
this->skyboxShader = shaderLoader.CreateProgram((char*)"shaders/skybox.vert", (char*)"shaders/skybox.frag");
this->bubbleShader = shaderLoader.CreateProgram((char*)"shaders/bubble.vert", (char*)"shaders/bubble.frag");
}
void Core::Engine::shutdownShaderPrograms() {
shaderLoader.DeleteProgram(this->textureShader);
shaderLoader.DeleteProgram(this->skyboxShader);
shaderLoader.DeleteProgram(this->bubbleShader);
}
void Core::Engine::initRenderContexts() {
loadModelToContext("models/fish.obj", this->fishContext);
loadModelToContext("models/submarine.obj", this->submarineContext);
loadModelToContext("models/sphere.obj", this->bubbleContext);
this->terrain = Terrain(this->heightGenerator);
obj::Model model = this->terrain.generateTerrain();
this->terrainContext.initFromOBJ(model);
}
void Core::Engine::loadTextures() {
this->fishTexture = LoadTexture("textures/fish.png");
this->submarineTexture = LoadTexture("textures/submarine.png");
this->bubbleTexture = LoadTexture("textures/bubble.png");
this->terrainTexture = LoadTexture("textures/terrain.jpg");
this->skyboxTexture = loadCubemap();
}
void Core::Engine::initCube() {
GLuint cubeVAO, cubeVBO;
glGenVertexArrays(1, &cubeVAO);
glGenBuffers(1, &cubeVBO);
glBindVertexArray(cubeVAO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(this->cubeVertices), &this->cubeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
}
void Core::Engine::initSkybox() {
this->initCube();
glGenVertexArrays(1, &this->skyboxVAO);
glBindVertexArray(this->skyboxVAO);
glGenBuffers(1, &this->skyboxVBO);
glBindBuffer(GL_ARRAY_BUFFER, this->skyboxVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(this->skyboxVertices), &this->skyboxVertices, GL_STATIC_DRAW);
GLuint vPosition = glGetAttribLocation(this->skyboxShader, "aPos");
glEnableVertexAttribArray(vPosition);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(this->skyboxVertices), this->skyboxVertices);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
}
void Core::Engine::initRandomGenerator(std::default_random_engine gen, std::uniform_int_distribution<> distr) {
this->gen = gen;
this->distr = distr;
}
std::vector<glm::vec3> Core::Engine::genBubbleKeyPoints() {
float random1 = this->distr(this->gen);
float random2 = this->distr(this->gen);
std::vector<glm::vec3> bubbleKeyPoints({
glm::vec3(random1 , -this->skyboxVerticeParameter, random2),
glm::vec3(random1 , this->skyboxVerticeParameter, random2)
}
);
return bubbleKeyPoints;
};
void Core::Engine::generateBubbleArray() {
for (int i = 0; i < 300; i++) {
this->bubbleArray[i] = this->genBubbleKeyPoints();
}
}
void Core::Engine::initBubbles() {
this->generateBubbleArray();
}
const float Core::Engine::cubeVertices[216] = {
// positions // normals
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f
};
const float Core::Engine::skyboxVerticeParameter = 50.0f;
const float Core::Engine::skyboxVertices[108] = {
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter
};

43
grafika_projekt/src/Engine.h Normal file
View File

@ -0,0 +1,43 @@
#pragma once
#include "glm.hpp"
#include "glew.h"
#include <map>
#include <string>
#include "Shader_Loader.h"
#include "Texture.h"
#include "Render_Utils.h"
#include "Terrain.h"
#include "HeightGenerator.h"
#include <random>
namespace Core {
class Engine {
public:
GLuint textureShader, skyboxShader, bubbleShader;
GLuint submarineTexture, bubbleTexture, fishTexture, terrainTexture, skyboxTexture;
GLuint skyboxVAO;
Core::RenderContext submarineContext, fishContext, bubbleContext, terrainContext;
std::vector<glm::vec3> bubbleArray[300];
void initShaderPrograms();
void shutdownShaderPrograms();
void initRenderContexts();
void loadTextures();
void initSkybox();
void initBubbles();
void initRandomGenerator(std::default_random_engine gen, std::uniform_int_distribution<> distr);
static const float skyboxVerticeParameter;
private:
HeightGenerator heightGenerator;
GLuint skyboxVBO;
Terrain terrain;
Shader_Loader shaderLoader;
static const float cubeVertices[216], skyboxVertices[108];
std::uniform_int_distribution<> distr;
std::default_random_engine gen;
void initCube();
void generateBubbleArray();
std::vector<glm::vec3> genBubbleKeyPoints();
};
}

55
grafika_projekt/src/HeightGenerator.cpp Normal file
View File

@ -0,0 +1,55 @@
#include "HeightGenerator.h"
#include <random>
#include <iostream>
#include <math.h>
# define MY_PI 3.1415927
std::random_device rd; // obtain a random number from hardware
const int HeightGenerator::SEED = rd();
float HeightGenerator::generateHeight(int x, int z) {
float total = 0;
int p = 0.5f;
for (int i = 0; i < 5; i++) {
float freq = pow(2, i);
float amp = pow(p, i);
total += getInterpolatedNoise(x * freq, z * freq) * amp;
}
return total;
}
float HeightGenerator::getInterpolatedNoise(float x, float z) {
int intX = int(x);
int intZ = int(z);
float fracX = x - intX;
float fracZ = z - intZ;
float v1 = getSmoothNoise(intX, intZ);
float v2 = getSmoothNoise(intX + 1, intZ);
float v3 = getSmoothNoise(intX, intZ + 1);
float v4 = getSmoothNoise(intX + 1, intZ + 1);
float i1 = interpolate(v1, v2, fracX);
float i2 = interpolate(v3, v4, fracX);
return interpolate(i1, i2, fracZ);
}
float HeightGenerator::interpolate(float a, float b, float blend) {
double theta = blend * MY_PI;
float f = float(1.f - cos(theta)) * 0.5f;
return a * (1 - f) + b * f;
}
float HeightGenerator::getSmoothNoise(int x, int z) {
float corners = float(getNoise(x - 1, z - 1) + getNoise(x + 1, z - 1) + getNoise(x - 1, z + 1) + getNoise(x + 1, z + 1)) / 16;
float sides = float(getNoise(x - 1, z) + getNoise(x + 1, z) + getNoise(x, z - 1) + getNoise(x, z + 1)) / 8;
float center = float(getNoise(x, z)) / 4;
return corners + sides + center;
}
float HeightGenerator::getNoise(int x, int z) {
std::mt19937 gen(SEED + x * 49632 + z * 325176);
std::uniform_real_distribution<> distr(-3, 3);
return distr(gen);
}

13
grafika_projekt/src/HeightGenerator.h Normal file
View File

@ -0,0 +1,13 @@
#pragma once
class HeightGenerator
{
public:
float generateHeight(int x, int z);
static const int SEED;
private:
float getInterpolatedNoise(float x, float z);
float getSmoothNoise(int x, int z);
float interpolate(float a, float b, float blend);
float getNoise(int x, int z);
};

80
grafika_projekt/src/Render_Utils.cpp
View File

@ -8,7 +8,6 @@
#include <assimp/scene.h>
#include <assimp/postprocess.h>
void Core::RenderContext::initFromOBJ(obj::Model& model)
{
vertexArray = 0;
@ -19,7 +18,7 @@ void Core::RenderContext::initFromOBJ(obj::Model& model)
unsigned int vertexTexBufferSize = sizeof(float) * model.texCoord.size();
size = model.faces["default"].size();
unsigned int vertexElementBufferSize = sizeof(unsigned short) * size;
unsigned int vertexElementBufferSize = sizeof(unsigned int) * size;
glGenVertexArrays(1, &vertexArray);
@ -167,3 +166,80 @@ void Core::DrawContext(Core::RenderContext& context)
);
glBindVertexArray(0);
}
void Core::loadModelToContext(std::string path, Core::RenderContext& context)
{
Assimp::Importer import;
const aiScene* scene = import.ReadFile(path, aiProcess_Triangulate | aiProcess_CalcTangentSpace);
if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode)
{
std::cout << "ERROR::ASSIMP::" << import.GetErrorString() << std::endl;
return;
}
context.initFromAssimpMesh(scene->mMeshes[0]);
}
GLuint Core::loadCubemap()
{
std::string skyboxTextures[6] = {
"models/skybox/right.jpg",
"models/skybox/left.jpg",
"models/skybox/top.jpg",
"models/skybox/bottom.jpg",
"models/skybox/front.jpg",
"models/skybox/back.jpg"
};
GLuint textureID;
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_CUBE_MAP, textureID);
int width, height, nrChannels;
for (unsigned int i = 0; i < 6; i++)
{
unsigned char* data = stbi_load(skyboxTextures[i].c_str(), &width, &height, &nrChannels, STBI_rgb_alpha);
if (data)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data
);
stbi_image_free(data);
}
else
{
std::cout << stbi_failure_reason() << std::endl;
std::cout << "Cubemap tex failed to load at path: " << skyboxTextures[i] << std::endl;
stbi_image_free(data);
}
}
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
return textureID;
}
void Core::drawObjectTexture(
Core::RenderContext context,
glm::mat4 modelMatrix,
GLuint textureId,
GLuint program,
glm::vec3 lightDir,
glm::mat4 cameraMatrix,
glm::mat4 perspectiveMatrix
) {
glUseProgram(program);
glUniform3f(glGetUniformLocation(program, "lightDir"), lightDir.x, lightDir.y, lightDir.z);
Core::SetActiveTexture(textureId, "textureSampler", program, 0);
glm::mat4 transformation = perspectiveMatrix * cameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(program, "modelViewProjectionMatrix"), 1, GL_FALSE, (float*)&transformation);
glUniformMatrix4fv(glGetUniformLocation(program, "modelMatrix"), 1, GL_FALSE, (float*)&modelMatrix);
Core::DrawContext(context);
glUseProgram(0);
}

19
grafika_projekt/src/Render_Utils.h
View File

@ -5,12 +5,15 @@
#include <assimp/Importer.hpp>
#include <assimp/scene.h>
#include <assimp/postprocess.h>
#include "SOIL/stb_image_aug.h"
#include "Texture.h"
#define STB_IMAGE_IMPLEMENTATION
#define BUFFER_OFFSET(i) ((char *)NULL + (i))
namespace Core
{
struct RenderContext
{
@ -76,4 +79,18 @@ namespace Core
void DrawVertexArray(const VertexData & data);
void DrawContext(RenderContext& context);
void loadModelToContext(std::string path, Core::RenderContext& context);
void drawObjectTexture(
Core::RenderContext context,
glm::mat4 modelMatrix,
GLuint textureId,
GLuint program,
glm::vec3 lightDir,
glm::mat4 cameraMatrix,
glm::mat4 perspectiveMatrix
);
GLuint loadCubemap();
}

69
grafika_projekt/src/Terrain.cpp Normal file
View File

@ -0,0 +1,69 @@
#include "Terrain.h"
const float Terrain::SIZE = 50.f;
const int Terrain::VERTEX_COUNT = 64;
const int Terrain::COUNT = Terrain::VERTEX_COUNT * Terrain::VERTEX_COUNT;
Terrain::Terrain(HeightGenerator heightGenerator) {
this->heightGenerator = heightGenerator;
}
obj::Model Terrain::generateTerrain() {
float vertices[COUNT * 3];
float normals[COUNT * 3];
float textureCoords[COUNT * 2];
int indices[6 * (VERTEX_COUNT - 1) * (VERTEX_COUNT - 1)];
int vertexPointer = 0;
for (int i = 0; i < VERTEX_COUNT; i++) {
for (int j = 0; j < VERTEX_COUNT; j++) {
vertices[vertexPointer * 3] = float(j) / float(VERTEX_COUNT - 1) * SIZE;
vertices[vertexPointer * 3 + 1] = getHeight(j, i);
vertices[vertexPointer * 3 + 2] = float(i) / float(VERTEX_COUNT - 1) * SIZE;
glm::vec3 normal = calculateNormal(j, i);
normals[vertexPointer * 3] = normal.x;
normals[vertexPointer * 3 + 1] = normal.y;
normals[vertexPointer * 3 + 2] = normal.z;
textureCoords[vertexPointer * 2] = float(j) / float(VERTEX_COUNT - 1);
textureCoords[vertexPointer * 2 + 1] = float(i) / float(VERTEX_COUNT - 1);
vertexPointer++;
}
}
int pointer = 0;
for (int gz = 0; gz < VERTEX_COUNT - 1; gz++) {
for (int gx = 0; gx < VERTEX_COUNT - 1; gx++) {
int topLeft = gz * VERTEX_COUNT + gx;
int topRight = topLeft + 1;
int bottomLeft = (gz + 1) * VERTEX_COUNT + gx;
int bottomRight = bottomLeft + 1;
indices[pointer++] = topLeft;
indices[pointer++] = bottomLeft;
indices[pointer++] = topRight;
indices[pointer++] = topRight;
indices[pointer++] = bottomLeft;
indices[pointer++] = bottomRight;
}
}
std::vector<float> vVertices(std::begin(vertices), std::end(vertices));
std::vector<float> vTextures(std::begin(textureCoords), std::end(textureCoords));
std::vector<float> vNormals(std::begin(normals), std::end(normals));
std::map<std::string, std::vector<unsigned int>> faces;
faces[std::string("default")] = std::vector<unsigned int>(std::begin(indices), std::end(indices));
obj::Model model = { vVertices, vTextures, vNormals, faces };
return model;
}
glm::vec3 Terrain::calculateNormal(int x, int z) {
float heightL = getHeight(x - 1, z);
float heightR = getHeight(x + 1, z);
float heightD = getHeight(x, z - 1);
float heightU = getHeight(x, z + 1);
glm::vec3 normal = glm::vec3(heightL - heightR, 2.f, heightD - heightU);
return glm::normalize(normal);
}
float Terrain::getHeight(int x, int z) {
return heightGenerator.generateHeight(x, z);
}

22
grafika_projekt/src/Terrain.h Normal file
View File

@ -0,0 +1,22 @@
#pragma once
#include "glew.h"
#include "freeglut.h"
#include "glm.hpp"
#include "HeightGenerator.h"
#include "objload.h"
#include <vector>
class Terrain
{
public:
Terrain() = default;
Terrain(HeightGenerator heightGenerator);
obj::Model generateTerrain();
private:
static const float SIZE;
static const int VERTEX_COUNT;
static const int COUNT;
HeightGenerator heightGenerator;
glm::vec3 calculateNormal(int x, int z);
float getHeight(int x, int z);
};

347
grafika_projekt/src/main.cpp
View File

@ -1,4 +1,3 @@
#define STB_IMAGE_IMPLEMENTATION
#include "glew.h"
#include "freeglut.h"
#include "glm.hpp"
@ -12,25 +11,17 @@
#include "Texture.h"
#include "Camera.h"
#include "SOIL/stb_image_aug.h"
#include "HeightGenerator.h"
#include "Terrain.h"
#include "Engine.h"
GLuint skyboxProgram, skyboxBuffer;
GLuint bubbleProgram;
GLuint programTexture;
Core::Engine engine;
GLuint textureSubmarine;
GLuint textureBubble;
GLuint textureFish;
unsigned int cubemapTexture, skyboxVAO;
unsigned int cubeVAO, cubeVBO;
float skyboxVerticeParameter = 50.0f;
float skyboxBoundary = 48.0f;
std::vector<glm::vec3> bubbleArray[300];
float old_x, old_y = -1;
glm::vec3 cursorDiff;
glm::vec3 lightDir = glm::normalize(glm::vec3(0.0f, skyboxVerticeParameter, 0.0f));
glm::vec3 lightDir = glm::normalize(glm::vec3(0.0f, engine.skyboxVerticeParameter, 0.0f));
glm::vec3 cameraPos = glm::vec3(0, 0, 0);
glm::vec3 oldCameraPos = glm::vec3(0, 0, 5);
@ -42,162 +33,31 @@ glm::quat rotation = glm::quat(1, 0, 0, 0);
glm::mat4 cameraMatrix, perspectiveMatrix;
Core::Shader_Loader shaderLoader;
Core::RenderContext submarineContext;
Core::RenderContext fishContext;
Core::RenderContext bubbleContext;
std::vector<glm::vec3> fishKeyPoints({
glm::vec3(-18.0f, -10.0f, -10.0f),
glm::vec3(-10.0f, -5.0f, -12.0f),
glm::vec3(8.0f, -3.0f, -3.0f),
glm::vec3(5.0f, 0.0f, 3.0f),
glm::vec3(3.0f, 2.0f, 4.0f),
glm::vec3(8.0f, 5.0f, 9.0f),
glm::vec3(14.0f, 6.0f, 15.0f),
glm::vec3(15.0f, 12.0f, 12.0f),
glm::vec3(10.0f, 17.0f, 15.0f),
glm::vec3(5.0f, 10.0f, 7.0f),
glm::vec3(-1.0f, 4.0f, 8.0f),
glm::vec3(-8.0f, 0.0f, 3.0f),
glm::vec3(-12.0f, -6.0f, -3.0f),
glm::vec3(-15.0f, -8.0f, -6.0f),
glm::vec3(-18.0f, -10.0f, -10.0f),
});
glm::vec3(-18.0f, -10.0f, -10.0f),
glm::vec3(-10.0f, -5.0f, -12.0f),
glm::vec3(8.0f, -3.0f, -3.0f),
glm::vec3(5.0f, 0.0f, 3.0f),
glm::vec3(3.0f, 2.0f, 4.0f),
glm::vec3(8.0f, 5.0f, 9.0f),
glm::vec3(14.0f, 6.0f, 15.0f),
glm::vec3(15.0f, 12.0f, 12.0f),
glm::vec3(10.0f, 17.0f, 15.0f),
glm::vec3(5.0f, 10.0f, 7.0f),
glm::vec3(-1.0f, 4.0f, 8.0f),
glm::vec3(-8.0f, 0.0f, 3.0f),
glm::vec3(-12.0f, -6.0f, -3.0f),
glm::vec3(-15.0f, -8.0f, -6.0f),
glm::vec3(-18.0f, -10.0f, -10.0f)
});
std::vector<glm::quat> keyRotation;
std::vector<Core::Node> fish;
std::string skyboxTextures[6] = {
"models/skybox/right.jpg",
"models/skybox/left.jpg",
"models/skybox/top.jpg",
"models/skybox/bottom.jpg",
"models/skybox/front.jpg",
"models/skybox/back.jpg"
};
float cubeVertices[] = {
// positions // normals
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f
};
float skyboxVertices[] = {
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, skyboxVerticeParameter,
-skyboxVerticeParameter, skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
-skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter,
skyboxVerticeParameter, -skyboxVerticeParameter, skyboxVerticeParameter
};
bool isInBoundaries(glm::vec3 nextPosition) {
return nextPosition.z > -skyboxBoundary && nextPosition.z < skyboxBoundary&& nextPosition.y > -skyboxBoundary &&
nextPosition.y < skyboxBoundary&& nextPosition.x < skyboxBoundary&& nextPosition.x > -skyboxBoundary;
}
std::random_device rd; // obtain a random number from hardware
std::mt19937 gen(rd()); // seed the generator
std::uniform_int_distribution<> distr(-skyboxVerticeParameter, skyboxVerticeParameter); // define the range
std::vector<glm::vec3> genBubbleKeyPoints() {
float random1 = distr(gen);
float random2 = distr(gen);
std::vector<glm::vec3> bubbleKeyPoints({
glm::vec3(random1 , -skyboxVerticeParameter, random2),
glm::vec3(random1 , skyboxVerticeParameter, random2)
}
);
return bubbleKeyPoints;
};
void generateBubbleArray() {
for (int i = 0; i < 300; i++) {
bubbleArray[i] = genBubbleKeyPoints();
}
}
void keyboard(unsigned char key, int x, int y)
{
float angleSpeed = 10.f;
@ -327,39 +187,23 @@ glm::mat4 animationMatrix(float time, glm::vec3 change, std::vector<glm::vec3> k
return result;
}
void drawObjectTexture(Core::RenderContext context, glm::mat4 modelMatrix, GLuint textureId, GLuint program)
{
glUseProgram(program);
glUniform3f(glGetUniformLocation(program, "lightDir"), lightDir.x, lightDir.y, lightDir.z);
Core::SetActiveTexture(textureId, "textureSampler", program, 0);
glm::mat4 transformation = perspectiveMatrix * cameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(program, "modelViewProjectionMatrix"), 1, GL_FALSE, (float*)&transformation);
glUniformMatrix4fv(glGetUniformLocation(program, "modelMatrix"), 1, GL_FALSE, (float*)&modelMatrix);
Core::DrawContext(context);
glUseProgram(0);
}
void renderScene()
{
{
cameraMatrix = createCameraMatrix();
perspectiveMatrix = Core::createPerspectiveMatrix();
glClearColor(0.219f, 0.407f, 0.658f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.219f, 0.407f, 0.658f, 1.0f);
float time = glutGet(GLUT_ELAPSED_TIME) / 1000.f;
glUseProgram(skyboxProgram);
glUniform1i(glGetUniformLocation(skyboxProgram, "skybox"), 0);
glUseProgram(engine.skyboxShader);
glUniform1i(glGetUniformLocation(engine.skyboxShader, "skybox"), 0);
glm::mat4 transformation = perspectiveMatrix * cameraMatrix;
glUniformMatrix4fv(glGetUniformLocation(skyboxProgram, "projectionViewMatrix"), 1, GL_FALSE, (float*)&transformation);
glBindVertexArray(skyboxVAO);
glUniformMatrix4fv(glGetUniformLocation(engine.skyboxShader, "projectionViewMatrix"), 1, GL_FALSE, (float*)&transformation);
glBindVertexArray(engine.skyboxVAO);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_CUBE_MAP, cubemapTexture);
glBindTexture(GL_TEXTURE_CUBE_MAP, engine.skyboxTexture);
glDrawArrays(GL_TRIANGLES, 0, 36);
glEnable(GL_BLEND);
@ -368,6 +212,7 @@ void renderScene()
glm::mat4 submarineInitialTransformation = glm::translate(glm::vec3(0, -0.5, -0.4)) * glm::rotate(glm::radians(180.0f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(0.25f));
glm::mat4 submarineModelMatrix = glm::translate(cameraPos + cameraDir) * glm::mat4_cast(glm::inverse(rotation)) * submarineInitialTransformation;
glm::mat4 bubbleInitialTransformation = glm::translate(glm::vec3(0, -0.5, -0.4)) * glm::rotate(glm::radians(180.0f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(0.5f));
glm::vec3 change1 = glm::vec3(0, 3, 0);
@ -378,87 +223,29 @@ void renderScene()
glm::vec3 change0 = glm::vec3(0, 0, 0);
for (int j = 0; j < 100; j++) {
drawObjectTexture(bubbleContext, animationMatrix(time + j, change0, bubbleArray[j], glm::vec3(0.04f), 0.2f), cubemapTexture, bubbleProgram);
Core::drawObjectTexture(engine.bubbleContext, animationMatrix(time + j, change0, engine.bubbleArray[j], glm::vec3(0.04f), 0.2f), engine.bubbleTexture, engine.bubbleShader, lightDir, cameraMatrix, perspectiveMatrix);
}
for (int i = 0; i < 5; i++) {
if (time > -10) {
drawObjectTexture(fishContext, animationMatrix(time + 15, change1, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
drawObjectTexture(fishContext, animationMatrix(time + 15, change2, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
drawObjectTexture(fishContext, animationMatrix(time + 15, change3, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
drawObjectTexture(fishContext, animationMatrix(time + 15, change4, fishKeyPoints, glm::vec3(0.25f), 1.f), textureFish, programTexture);
Core::drawObjectTexture(engine.fishContext, animationMatrix(time + 15, change1, fishKeyPoints, glm::vec3(0.25f), 1.f), engine.fishTexture, engine.textureShader, lightDir, cameraMatrix, perspectiveMatrix);
Core::drawObjectTexture(engine.fishContext, animationMatrix(time + 15, change2, fishKeyPoints, glm::vec3(0.25f), 1.f), engine.fishTexture, engine.textureShader, lightDir, cameraMatrix, perspectiveMatrix);
Core::drawObjectTexture(engine.fishContext, animationMatrix(time + 15, change3, fishKeyPoints, glm::vec3(0.25f), 1.f), engine.fishTexture, engine.textureShader, lightDir, cameraMatrix, perspectiveMatrix);
Core::drawObjectTexture(engine.fishContext, animationMatrix(time + 15, change4, fishKeyPoints, glm::vec3(0.25f), 1.f), engine.fishTexture, engine.textureShader, lightDir, cameraMatrix, perspectiveMatrix);
time -= 6;
}
}
//drawObjectTexture(bubbleContext, submarineInitialTransformation, cubemapTexture, bubbleProgram);
drawObjectTexture(submarineContext, submarineModelMatrix, textureSubmarine, programTexture);
Core::drawObjectTexture(engine.submarineContext, submarineModelMatrix, engine.submarineTexture, engine.textureShader, lightDir, cameraMatrix, perspectiveMatrix);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glm::mat4 terrainTransformation = glm::translate(glm::vec3(50, -45, 50)) * glm::rotate(glm::radians(180.f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(2.f));
Core::drawObjectTexture(engine.terrainContext, terrainTransformation, engine.terrainTexture, engine.textureShader, lightDir, cameraMatrix, perspectiveMatrix);
glutSwapBuffers();
}
void loadModelToContext(std::string path, Core::RenderContext& context)
{
Assimp::Importer import;
const aiScene* scene = import.ReadFile(path, aiProcess_Triangulate | aiProcess_CalcTangentSpace);
if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode)
{
std::cout << "ERROR::ASSIMP::" << import.GetErrorString() << std::endl;
return;
}
context.initFromAssimpMesh(scene->mMeshes[0]);
}
unsigned int loadCubemap()
{
unsigned int textureID;
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_CUBE_MAP, textureID);
int width, height, nrChannels;
for (unsigned int i = 0; i < 6; i++)
{
unsigned char* data = stbi_load(skyboxTextures[i].c_str(), &width, &height, &nrChannels, STBI_rgb_alpha);
if (data)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data
);
stbi_image_free(data);
}
else
{
std::cout << stbi_failure_reason() << std::endl;
std::cout << "Cubemap tex failed to load at path: " << skyboxTextures[i] << std::endl;
stbi_image_free(data);
}
}
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
return textureID;
}
void initSkybox()
{
glGenVertexArrays(1, &skyboxVAO);
glBindVertexArray(skyboxVAO);
glGenBuffers(1, &skyboxBuffer);
glBindBuffer(GL_ARRAY_BUFFER, skyboxBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(skyboxVertices), &skyboxVertices, GL_STATIC_DRAW);
GLuint vPosition = glGetAttribLocation(skyboxProgram, "aPos");
glEnableVertexAttribArray(vPosition);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(skyboxVertices), skyboxVertices);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
}
void initKeyRotation() {
glm::vec3 oldDirection = glm::vec3(0, 0, 1);
glm::quat oldRotationCamera = glm::quat(1, 0, 0, 0);
@ -478,50 +265,18 @@ void initKeyRotation() {
keyRotation.push_back(glm::quat(1, 0, 0, 0));
}
void initCube()
{
glGenVertexArrays(1, &cubeVAO);
glGenBuffers(1, &cubeVBO);
glBindVertexArray(cubeVAO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(cubeVertices), &cubeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
}
void init()
{
std::default_random_engine gen(HeightGenerator::SEED);
std::uniform_int_distribution<> distr(-engine.skyboxVerticeParameter, engine.skyboxVerticeParameter);
engine.initRandomGenerator(gen, distr);
glEnable(GL_DEPTH_TEST);
programTexture = shaderLoader.CreateProgram((char*)"shaders/shader_tex.vert", (char*)"shaders/shader_tex.frag");
skyboxProgram = shaderLoader.CreateProgram((char*)"shaders/skybox.vert", (char*)"shaders/skybox.frag");
bubbleProgram = shaderLoader.CreateProgram((char*)"shaders/bubble.vert", (char*)"shaders/bubble.frag");
cubemapTexture = loadCubemap();
loadModelToContext("models/submarine.obj", submarineContext);
textureSubmarine = Core::LoadTexture("textures/submarine.png");
loadModelToContext("models/fish.obj", fishContext);
textureFish = Core::LoadTexture("textures/fish.png");
engine.initShaderPrograms();
engine.initRenderContexts();
engine.loadTextures();
engine.initSkybox();
engine.initBubbles();
initKeyRotation();
loadModelToContext("models/submarine.obj", submarineContext);
textureSubmarine = Core::LoadTexture("textures/submarine.png");
loadModelToContext("models/sphere.obj", bubbleContext);
textureBubble = Core::LoadTexture("textures/bubble.png");
generateBubbleArray();
initCube();
initSkybox();
}
void shutdown()
{
shaderLoader.DeleteProgram(programTexture);
shaderLoader.DeleteProgram(skyboxProgram);
shaderLoader.DeleteProgram(bubbleProgram);
}
void idle()
@ -547,6 +302,6 @@ int main(int argc, char** argv)
glutSetCursor(GLUT_CURSOR_NONE);
glutMainLoop();
shutdown();
engine.shutdownShaderPrograms();
return 0;
}

140
grafika_projekt/src/mesh.h Normal file
View File

@ -0,0 +1,140 @@
#ifndef MESH_H
#define MESH_H
#include "glew.h"
#include "freeglut.h"
#include "glm.hpp"
#include "ext.hpp"
#include <iostream>
#include <cmath>
#include <string>
#include <vector>
using namespace std;
struct Vertex {
// position
glm::vec3 Position;
// normal
glm::vec3 Normal;
// texCoords
glm::vec2 TexCoords;
// tangent
glm::vec3 Tangent;
// bitangent
glm::vec3 Bitangent;
};
struct Texture {
unsigned int id;
string type;
string path;
};
class Mesh {
public:
// mesh Data
vector<Vertex> vertices;
vector<unsigned int> indices;
vector<Texture> textures;
glm::mat4 matrix;
unsigned int VAO;
// constructor
Mesh(vector<Vertex> vertices, vector<unsigned int> indices, vector<Texture> textures,glm::mat4 matrix)
{
this->vertices = vertices;
this->indices = indices;
this->textures = textures;
this->matrix = matrix;
// now that we have all the required data, set the vertex buffers and its attribute pointers.
setupMesh();
}
// render the mesh
void Draw(GLuint program)
{
// bind appropriate textures
unsigned int diffuseNr = 1;
unsigned int specularNr = 1;
unsigned int normalNr = 1;
unsigned int heightNr = 1;
for (unsigned int i = 0; i < textures.size(); i++)
{
glActiveTexture(GL_TEXTURE0 + i); // active proper texture unit before binding
// retrieve texture number (the N in diffuse_textureN)
string number;
string name = textures[i].type;
if (name == "texture_diffuse")
number = std::to_string(diffuseNr++);
else if (name == "texture_specular")
number = std::to_string(specularNr++); // transfer unsigned int to stream
else if (name == "texture_normal")
number = std::to_string(normalNr++); // transfer unsigned int to stream
else if (name == "texture_height")
number = std::to_string(heightNr++); // transfer unsigned int to stream
// now set the sampler to the correct texture unit
glUniform1i(glGetUniformLocation(program, (name + number).c_str()), i);
// and finally bind the texture
glBindTexture(GL_TEXTURE_2D, textures[i].id);
}
glUniformMatrix4fv(glGetUniformLocation(program, "model"), 1, GL_FALSE, (float*)&matrix);
// draw mesh
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
// always good practice to set everything back to defaults once configured.
glActiveTexture(GL_TEXTURE0);
}
private:
// render data
unsigned int VBO, EBO;
// initializes all the buffer objects/arrays
void setupMesh()
{
// create buffers/arrays
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
glBindVertexArray(VAO);
// load data into vertex buffers
glBindBuffer(GL_ARRAY_BUFFER, VBO);
// A great thing about structs is that their memory layout is sequential for all its items.
// The effect is that we can simply pass a pointer to the struct and it translates perfectly to a glm::vec3/2 array which
// again translates to 3/2 floats which translates to a byte array.
glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), &vertices[0], GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned int), &indices[0], GL_STATIC_DRAW);
// set the vertex attribute pointers
// vertex Positions
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)0);
// vertex normals
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, Normal));
// vertex texture coords
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, TexCoords));
// vertex tangent
glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, Tangent));
// vertex bitangent
glEnableVertexAttribArray(4);
glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, Bitangent));
glBindVertexArray(0);
}
};
#endif

250
grafika_projekt/src/model.h Normal file
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@ -0,0 +1,250 @@
#pragma once
#include "glew.h"
#include "freeglut.h"
#include "glm.hpp"
#include "ext.hpp"
#include <iostream>
#include <cmath>
#include <assimp/Importer.hpp>
#include <assimp/scene.h>
#include <assimp/postprocess.h>
#include "stb_image.h"
#include "mesh.h"
#include <string>
#include <fstream>
#include <sstream>
#include <iostream>
#include <map>
#include <vector>
using namespace std;
unsigned int TextureFromFile(const char* path, const string& directory, bool gamma = false);
class Model
{
public:
// model data
vector<Texture> textures_loaded; // stores all the textures loaded so far, optimization to make sure textures aren't loaded more than once.
vector<Mesh> meshes;
string directory;
bool gammaCorrection;
// constructor, expects a filepath to a 3D model.
Model(string const& path, bool gamma = false) : gammaCorrection(gamma)
{
loadModel(path);
}
// draws the model, and thus all its meshes
void Draw(GLuint shader)
{
for (unsigned int i = 0; i < meshes.size(); i++)
meshes[i].Draw(shader);
}
private:
// loads a model with supported ASSIMP extensions from file and stores the resulting meshes in the meshes vector.
void loadModel(string const& path)
{
// read file via ASSIMP
Assimp::Importer importer;
const aiScene* scene = importer.ReadFile(path, aiProcess_Triangulate | aiProcess_GenSmoothNormals | aiProcess_FlipUVs | aiProcess_CalcTangentSpace);
// check for errors
if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode) // if is Not Zero
{
cout << "ERROR::ASSIMP:: " << importer.GetErrorString() << endl;
return;
}
// retrieve the directory path of the filepath
directory = path.substr(0, path.find_last_of('/'));
// process ASSIMP's root node recursively
processNode(scene->mRootNode, scene,glm::mat4());
}
// processes a node in a recursive fashion. Processes each individual mesh located at the node and repeats this process on its children nodes (if any).
void processNode(aiNode* node, const aiScene* scene,glm::mat4 matrix)
{
glm::mat4 outMatrix = matrix * mat4_cast(node->mTransformation);
// process each mesh located at the current node
for (unsigned int i = 0; i < node->mNumMeshes; i++)
{
// the node object only contains indices to index the actual objects in the scene.
// the scene contains all the data, node is just to keep stuff organized (like relations between nodes).
aiMesh* mesh = scene->mMeshes[node->mMeshes[i]];
meshes.push_back(processMesh(mesh, scene, outMatrix));
}
// after we've processed all of the meshes (if any) we then recursively process each of the children nodes
for (unsigned int i = 0; i < node->mNumChildren; i++)
{
processNode(node->mChildren[i], scene, outMatrix);
}
}
Mesh processMesh(aiMesh* mesh, const aiScene* scene, glm::mat4 matrix)
{
// data to fill
vector<Vertex> vertices;
vector<unsigned int> indices;
vector<Texture> textures;
// walk through each of the mesh's vertices
for (unsigned int i = 0; i < mesh->mNumVertices; i++)
{
Vertex vertex;
glm::vec3 vector; // we declare a placeholder vector since assimp uses its own vector class that doesn't directly convert to glm's vec3 class so we transfer the data to this placeholder glm::vec3 first.
// positions
vector.x = mesh->mVertices[i].x;
vector.y = mesh->mVertices[i].y;
vector.z = mesh->mVertices[i].z;
vertex.Position = vector;
// normals
if (mesh->HasNormals())
{
vector.x = mesh->mNormals[i].x;
vector.y = mesh->mNormals[i].y;
vector.z = mesh->mNormals[i].z;
vertex.Normal = vector;
}
// texture coordinates
if (mesh->mTextureCoords[0]) // does the mesh contain texture coordinates?
{
glm::vec2 vec;
// a vertex can contain up to 8 different texture coordinates. We thus make the assumption that we won't
// use models where a vertex can have multiple texture coordinates so we always take the first set (0).
vec.x = mesh->mTextureCoords[0][i].x;
vec.y = mesh->mTextureCoords[0][i].y;
vertex.TexCoords = vec;
// tangent
vector.x = mesh->mTangents[i].x;
vector.y = mesh->mTangents[i].y;
vector.z = mesh->mTangents[i].z;
vertex.Tangent = vector;
// bitangent
vector.x = mesh->mBitangents[i].x;
vector.y = mesh->mBitangents[i].y;
vector.z = mesh->mBitangents[i].z;
vertex.Bitangent = vector;
}
else
vertex.TexCoords = glm::vec2(0.0f, 0.0f);
vertices.push_back(vertex);
}
// now wak through each of the mesh's faces (a face is a mesh its triangle) and retrieve the corresponding vertex indices.
for (unsigned int i = 0; i < mesh->mNumFaces; i++)
{
aiFace face = mesh->mFaces[i];
// retrieve all indices of the face and store them in the indices vector
for (unsigned int j = 0; j < face.mNumIndices; j++)
indices.push_back(face.mIndices[j]);
}
// process materials
aiMaterial* material = scene->mMaterials[mesh->mMaterialIndex];
// we assume a convention for sampler names in the shaders. Each diffuse texture should be named
// as 'texture_diffuseN' where N is a sequential number ranging from 1 to MAX_SAMPLER_NUMBER.
// Same applies to other texture as the following list summarizes:
// diffuse: texture_diffuseN
// specular: texture_specularN
// normal: texture_normalN
// 1. diffuse maps
vector<Texture> diffuseMaps = loadMaterialTextures(material, aiTextureType_DIFFUSE, "texture_diffuse");
textures.insert(textures.end(), diffuseMaps.begin(), diffuseMaps.end());
// 2. specular maps
vector<Texture> specularMaps = loadMaterialTextures(material, aiTextureType_SPECULAR, "texture_specular");
textures.insert(textures.end(), specularMaps.begin(), specularMaps.end());
// 3. normal maps
std::vector<Texture> normalMaps = loadMaterialTextures(material, aiTextureType_HEIGHT, "texture_normal");
textures.insert(textures.end(), normalMaps.begin(), normalMaps.end());
// 4. height maps
std::vector<Texture> heightMaps = loadMaterialTextures(material, aiTextureType_AMBIENT, "texture_height");
textures.insert(textures.end(), heightMaps.begin(), heightMaps.end());
// return a mesh object created from the extracted mesh data
return Mesh(vertices, indices, textures, matrix);
}
// checks all material textures of a given type and loads the textures if they're not loaded yet.
// the required info is returned as a Texture struct.
vector<Texture> loadMaterialTextures(aiMaterial* mat, aiTextureType type, string typeName)
{
vector<Texture> textures;
for (unsigned int i = 0; i < mat->GetTextureCount(type); i++)
{
aiString str;
mat->GetTexture(type, i, &str);
// check if texture was loaded before and if so, continue to next iteration: skip loading a new texture
bool skip = false;
for (unsigned int j = 0; j < textures_loaded.size(); j++)
{
if (std::strcmp(textures_loaded[j].path.data(), str.C_Str()) == 0)
{
textures.push_back(textures_loaded[j]);
skip = true; // a texture with the same filepath has already been loaded, continue to next one. (optimization)
break;
}
}
if (!skip)
{ // if texture hasn't been loaded already, load it
Texture texture;
texture.id = TextureFromFile(str.C_Str(), this->directory);
texture.type = typeName;
texture.path = str.C_Str();
textures.push_back(texture);
textures_loaded.push_back(texture); // store it as texture loaded for entire model, to ensure we won't unnecesery load duplicate textures.
}
}
return textures;
}
};
unsigned int TextureFromFile(const char* path, const string& directory, bool gamma)
{
string filename = string(path);
filename = directory + '/' + filename;
unsigned int textureID;
glGenTextures(1, &textureID);
int width, height, nrComponents;
unsigned char* data = stbi_load(filename.c_str(), &width, &height, &nrComponents, 0);
if (data)
{
GLenum format;
if (nrComponents == 1)
format = GL_RED;
else if (nrComponents == 3)
format = GL_RGB;
else if (nrComponents == 4)
format = GL_RGBA;
glBindTexture(GL_TEXTURE_2D, textureID);
glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data);
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
stbi_image_free(data);
}
else
{
std::cout << "Texture failed to load at path: " << path << std::endl;
stbi_image_free(data);
}
return textureID;
}

8
grafika_projekt/src/objload.h
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@ -40,7 +40,7 @@ struct Model {
std::vector<float> texCoord; //< 2 * N entries
std::vector<float> normal; //< 3 * N entries
std::map<std::string, std::vector<unsigned short> > faces; //< assume triangels and uniform indexing
std::map<std::string, std::vector<unsigned int> > faces; //< assume triangels and uniform indexing
};
struct ObjModel {
@ -221,10 +221,10 @@ Model convertToModel( const ObjModel & obj ) {
for(std::map<std::string, ObjModel::FaceList>::const_iterator g = obj.faces.begin(); g != obj.faces.end(); ++g){
const std::string & name = g->first;
const ObjModel::FaceList & fl = g->second;
std::vector<unsigned short> & v = model.faces[g->first];
std::vector<unsigned int> & v = model.faces[g->first];
v.reserve(fl.first.size());
for(std::vector<ObjModel::FaceVertex>::const_iterator f = fl.first.begin(); f != fl.first.end(); ++f){
const unsigned short index = std::distance(unique.begin(), std::lower_bound(unique.begin(), unique.end(), *f));
const unsigned int index = std::distance(unique.begin(), std::lower_bound(unique.begin(), unique.end(), *f));
v.push_back(index);
}
}
@ -276,7 +276,7 @@ std::ostream & operator<<( std::ostream & out, const Model & m ){
}
if(!m.faces.empty()){
out << "faces\t";
for(std::map<std::string, std::vector<unsigned short> >::const_iterator g = m.faces.begin(); g != m.faces.end(); ++g){
for(std::map<std::string, std::vector<unsigned int> >::const_iterator g = m.faces.begin(); g != m.faces.end(); ++g){
out << g->first << " ";
}
out << "\n";

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