lab 5 spaceship light

cw 5/shaders/shader_5_1.frag

@@ -1,26 +1,30 @@
 #version 430 core
 
 uniform vec3 color;
-uniform vec3 lightPos;
+uniform vec3 sunPos;
-uniform vec3 lightColor;
+uniform vec3 sunColor;
-uniform vec3 cameraPos;
+uniform float sunLightExp;
 
+uniform vec3 cameraPos;
 uniform float time;
-uniform float lightExp;
+
+uniform vec3 reflectorPos;
+uniform vec3 reflectorDir;
+uniform vec3 reflectorColor;
+uniform float reflectorAngle;
+uniform float reflectorLightExp;
+
+vec3 normalizedVertexNormal;
 
 in vec3 vertexNormalOut;
 in vec3 vertexPosOut;
 out vec4 outColor;
 
-
+vec4 calcPointLight(vec3 fragColor, vec3 lightPos, vec3 lightColor, float lightExp) {
-void main()
-{
 	vec3 lightDir = normalize(vertexPosOut - lightPos);
-
 	float lightDistance = length(vertexPosOut - lightPos);
 	vec3 newLightColor = lightColor / pow(lightDistance, 2);
 
-	vec3 normalizedVertexNormal = normalize(vertexNormalOut);
 	float intensity = dot(normalizedVertexNormal, -lightDir);
 	intensity  = max(intensity, 0.0);
 	
@@ -31,6 +35,37 @@ void main()
 	float specular = pow(max(dot(viewDir, reflectDir), 0.0), glossPow);
 
 	float diffuse = intensity;
-	outColor = vec4(newLightColor * (color * diffuse + specular ), 1.0);
+	vec3 resultColor = newLightColor * (fragColor * diffuse + specular );
-	outColor = 1 - exp(-outColor * lightExp);
+	return vec4(1 - exp(-resultColor  * lightExp), 1.0);
+}
+
+vec4 calcSpotLight(vec3 fragColor, vec3 lightPos, vec3 lightColor, vec3 lightDir, float lightExp) {
+	vec3 reflectorLightDir = normalize(vertexPosOut - reflectorPos);
+	float angleCos = dot(reflectorLightDir, reflectorDir);
+	float reflectorOutAngle = reflectorAngle + radians(10);
+	float epsilon = cos(reflectorAngle) - cos(reflectorOutAngle);
+	vec4 res = vec4(0, 0, 0, 1);
+	if (angleCos > cos(reflectorOutAngle)) {
+		float intensity = clamp((angleCos - cos(reflectorOutAngle)) / epsilon, 0.0, 1.0);  
+		res = calcPointLight(color, reflectorPos, reflectorColor, reflectorLightExp  * intensity);
+	}
+	return res;
+}
+
+
+
+void main()
+{
+	normalizedVertexNormal = normalize(vertexNormalOut);
+
+	outColor = calcPointLight(color, sunPos, sunColor, sunLightExp);
+
+	vec3 reflectorLightDir = normalize(vertexPosOut - reflectorPos);
+	float angleCos = dot(reflectorLightDir, reflectorDir);
+	float reflectorOutAngle = reflectorAngle + radians(10);
+	float epsilon = cos(reflectorAngle) - cos(reflectorOutAngle);
+	if (angleCos > cos(reflectorOutAngle)) {
+		float intensity = clamp((angleCos - cos(reflectorOutAngle)) / epsilon, 0.0, 1.0);  
+		outColor += calcSpotLight(color, reflectorPos, reflectorColor, reflectorLightDir, reflectorLightExp  * intensity);
+	}
 }

cw 5/shaders/shader_5_sun.frag

@@ -18,6 +18,7 @@ void main()
 	vec3 viewDir = normalize(cameraPos - vertexPosOut);
 	float angle = dot(viewDir, normalizedVertexNormal);
 
-	//outColor = vec4(color * (angle / M_PI), 1.0);
+//	outColor = vec4(color * angle, 1.0);
-	outColor = vec4(mix(color, vec3(1), angle), 1.0);
+	vec3 red = vec3(1, 0, 0);
+	outColor = vec4(mix(red, color, angle), 1.0);
 }

cw 5/src/ex_5_1.hpp

@@ -29,8 +29,13 @@ Core::RenderContext sphereContext;
 glm::vec3 cameraPos = glm::vec3(-4.f, 0, 0);
 glm::vec3 cameraDir = glm::vec3(1.f, 0.f, 0.f);
 glm::vec3 lightDir = glm::normalize(glm::vec3(1.f, 1.f, 1.f));
-glm::vec3 lightColor = glm::vec3(1.f, 1.f, 1.f);
+
-float lightExp = 100;
+glm::vec3 sunLightColor = glm::vec3(1.f, 1.f, 1.f);
+float sunLightExp = 100;
+
+glm::vec3 reflectorColor = glm::vec3(0.3f, 0.f, 0.f);
+float reflectorAngle = glm::radians(25.f);
+float reflectorLightExp = 5;
 
 glm::vec3 spaceshipPos = glm::vec3(-4.f, 0, 0);
 glm::vec3 spaceshipDir = glm::vec3(1.f, 0.f, 0.f);
@@ -96,10 +101,20 @@ void drawObjectColor(GLuint program, Core::RenderContext& context, glm::mat4 mod
 	glUniformMatrix4fv(glGetUniformLocation(program, "transformation"), 1, GL_FALSE, (float*)&transformation);
 	glUniformMatrix4fv(glGetUniformLocation(program, "modelMat"), 1, GL_FALSE, (float*)&modelMatrix);
 	glUniform3f(glGetUniformLocation(program, "color"), color.x, color.y, color.z);
+	//sun
 	//glUniform3f(glGetUniformLocation(program, "lightDir"), lightDir.x, lightDir.y, lightDir.z);
-	glUniform3f(glGetUniformLocation(program, "lightPos"), 0.f, 0.f, 0.f);
+	glUniform3f(glGetUniformLocation(program, "sunPos"), 0.f, 0.f, 0.f);
-	glUniform3f(glGetUniformLocation(program, "lightColor"), lightColor.x, lightColor.y, lightColor.z);
+	glUniform3f(glGetUniformLocation(program, "sunColor"), sunLightColor.x, sunLightColor.y, sunLightColor.z);
-	glUniform1f(glGetUniformLocation(program, "lightExp"), lightExp);
+	glUniform1f(glGetUniformLocation(program, "sunLightExp"), sunLightExp);
+	//spaceship reflector
+	glm::vec3 reflectorPos = spaceshipPos + 0.037f * spaceshipDir;
+	glUniform3f(glGetUniformLocation(program, "reflectorPos"), reflectorPos.x, reflectorPos.y, reflectorPos.z);
+	glUniform3f(glGetUniformLocation(program, "reflectorDir"), spaceshipDir.x, spaceshipDir.y, spaceshipDir.z);
+	glUniform1f(glGetUniformLocation(program, "reflectorAngle"), reflectorAngle);
+	glUniform3f(glGetUniformLocation(program, "reflectorColor"), 
+		reflectorColor.x, reflectorColor.y, reflectorColor.z);
+	glUniform1f(glGetUniformLocation(program, "reflectorLightExp"), reflectorLightExp);
+
 	glUniform3f(glGetUniformLocation(program, "cameraPos"), cameraPos.x, cameraPos.y, cameraPos.z);
 	//TEST
 	glUniform1f(glGetUniformLocation(program, "time"), lastTime);
@@ -116,7 +131,7 @@ void renderScene(GLFWwindow* window)
 	float time = glfwGetTime();
 	updateDeltaTime(time);
 
-
+	time = 0;
 
 	drawObjectColor(programSun, sphereContext, glm::mat4(), glm::vec3(1.0, 1.0, 0.3));
 
@@ -128,7 +143,7 @@ void renderScene(GLFWwindow* window)
 
 	glm::vec3 spaceshipSide = glm::normalize(glm::cross(spaceshipDir, glm::vec3(0.f, 1.f, 0.f)));
 	glm::vec3 spaceshipUp = glm::normalize(glm::cross(spaceshipSide, spaceshipDir));
-	glm::mat4 specshipCameraRotrationMatrix = glm::mat4({
+	glm::mat4 spaceshipCameraRotrationMatrix = glm::mat4({
 		spaceshipSide.x,spaceshipSide.y,spaceshipSide.z,0,
 		spaceshipUp.x,spaceshipUp.y,spaceshipUp.z ,0,
 		-spaceshipDir.x,-spaceshipDir.y,-spaceshipDir.z,0,
@@ -141,11 +156,10 @@ void renderScene(GLFWwindow* window)
 	//	glm::vec3(0.3, 0.3, 0.5)
 	//	);
 	drawObjectColor(program, shipContext,
-		glm::translate(spaceshipPos) * specshipCameraRotrationMatrix * glm::eulerAngleY(glm::pi<float>()) * glm::scale(glm::vec3(0.2f)),
+		glm::translate(spaceshipPos) * spaceshipCameraRotrationMatrix * glm::eulerAngleY(glm::pi<float>()) * glm::scale(glm::vec3(0.2f)),
 		glm::vec3(0.3, 0.3, 0.5)
 	);
 
-
 	glfwSwapBuffers(window);
 }
 void framebuffer_size_callback(GLFWwindow* window, int width, int height)
@@ -221,9 +235,14 @@ void processInput(GLFWwindow* window)
 	//cameraDir = glm::normalize(-cameraPos);
 
 	if (glfwGetKey(window, GLFW_KEY_1) == GLFW_PRESS)
-		lightExp -= 1;
+		sunLightExp = glm::max(0.f, sunLightExp - 0.01f);
 	if (glfwGetKey(window, GLFW_KEY_2) == GLFW_PRESS)
-		lightExp += 1;
+		sunLightExp += 0.01f;
+
+	if (glfwGetKey(window, GLFW_KEY_3) == GLFW_PRESS)
+		reflectorLightExp = glm::max(0.f, reflectorLightExp - 0.01f);
+	if (glfwGetKey(window, GLFW_KEY_4) == GLFW_PRESS)
+		reflectorLightExp += 0.01f;
 }
 
 // funkcja jest glowna petla