535 lines
19 KiB
C++
535 lines
19 KiB
C++
namespace glm
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{
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> ortho(T left, T right, T bottom, T top)
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{
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mat<4, 4, T, defaultp> Result(static_cast<T>(1));
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Result[0][0] = static_cast<T>(2) / (right - left);
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Result[1][1] = static_cast<T>(2) / (top - bottom);
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Result[2][2] = - static_cast<T>(1);
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Result[3][0] = - (right + left) / (right - left);
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Result[3][1] = - (top + bottom) / (top - bottom);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoLH_ZO(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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mat<4, 4, T, defaultp> Result(1);
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Result[0][0] = static_cast<T>(2) / (right - left);
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Result[1][1] = static_cast<T>(2) / (top - bottom);
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Result[2][2] = static_cast<T>(1) / (zFar - zNear);
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Result[3][0] = - (right + left) / (right - left);
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Result[3][1] = - (top + bottom) / (top - bottom);
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Result[3][2] = - zNear / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoLH_NO(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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mat<4, 4, T, defaultp> Result(1);
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Result[0][0] = static_cast<T>(2) / (right - left);
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Result[1][1] = static_cast<T>(2) / (top - bottom);
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Result[2][2] = static_cast<T>(2) / (zFar - zNear);
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Result[3][0] = - (right + left) / (right - left);
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Result[3][1] = - (top + bottom) / (top - bottom);
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Result[3][2] = - (zFar + zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoRH_ZO(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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mat<4, 4, T, defaultp> Result(1);
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Result[0][0] = static_cast<T>(2) / (right - left);
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Result[1][1] = static_cast<T>(2) / (top - bottom);
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Result[2][2] = - static_cast<T>(1) / (zFar - zNear);
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Result[3][0] = - (right + left) / (right - left);
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Result[3][1] = - (top + bottom) / (top - bottom);
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Result[3][2] = - zNear / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoRH_NO(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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mat<4, 4, T, defaultp> Result(1);
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Result[0][0] = static_cast<T>(2) / (right - left);
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Result[1][1] = static_cast<T>(2) / (top - bottom);
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Result[2][2] = - static_cast<T>(2) / (zFar - zNear);
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Result[3][0] = - (right + left) / (right - left);
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Result[3][1] = - (top + bottom) / (top - bottom);
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Result[3][2] = - (zFar + zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoZO(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
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return orthoLH_ZO(left, right, bottom, top, zNear, zFar);
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else
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return orthoRH_ZO(left, right, bottom, top, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoNO(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
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return orthoLH_NO(left, right, bottom, top, zNear, zFar);
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else
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return orthoRH_NO(left, right, bottom, top, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoLH(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
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return orthoLH_ZO(left, right, bottom, top, zNear, zFar);
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else
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return orthoLH_NO(left, right, bottom, top, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> orthoRH(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
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return orthoRH_ZO(left, right, bottom, top, zNear, zFar);
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else
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return orthoRH_NO(left, right, bottom, top, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> ortho(T left, T right, T bottom, T top, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO)
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return orthoLH_ZO(left, right, bottom, top, zNear, zFar);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO)
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return orthoLH_NO(left, right, bottom, top, zNear, zFar);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO)
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return orthoRH_ZO(left, right, bottom, top, zNear, zFar);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO)
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return orthoRH_NO(left, right, bottom, top, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumLH_ZO(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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mat<4, 4, T, defaultp> Result(0);
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Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left);
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Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom);
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Result[2][0] = (right + left) / (right - left);
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Result[2][1] = (top + bottom) / (top - bottom);
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Result[2][2] = farVal / (farVal - nearVal);
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Result[2][3] = static_cast<T>(1);
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Result[3][2] = -(farVal * nearVal) / (farVal - nearVal);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumLH_NO(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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mat<4, 4, T, defaultp> Result(0);
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Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left);
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Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom);
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Result[2][0] = (right + left) / (right - left);
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Result[2][1] = (top + bottom) / (top - bottom);
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Result[2][2] = (farVal + nearVal) / (farVal - nearVal);
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Result[2][3] = static_cast<T>(1);
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Result[3][2] = - (static_cast<T>(2) * farVal * nearVal) / (farVal - nearVal);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumRH_ZO(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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mat<4, 4, T, defaultp> Result(0);
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Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left);
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Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom);
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Result[2][0] = (right + left) / (right - left);
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Result[2][1] = (top + bottom) / (top - bottom);
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Result[2][2] = farVal / (nearVal - farVal);
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Result[2][3] = static_cast<T>(-1);
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Result[3][2] = -(farVal * nearVal) / (farVal - nearVal);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumRH_NO(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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mat<4, 4, T, defaultp> Result(0);
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Result[0][0] = (static_cast<T>(2) * nearVal) / (right - left);
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Result[1][1] = (static_cast<T>(2) * nearVal) / (top - bottom);
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Result[2][0] = (right + left) / (right - left);
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Result[2][1] = (top + bottom) / (top - bottom);
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Result[2][2] = - (farVal + nearVal) / (farVal - nearVal);
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Result[2][3] = static_cast<T>(-1);
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Result[3][2] = - (static_cast<T>(2) * farVal * nearVal) / (farVal - nearVal);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumZO(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
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return frustumLH_ZO(left, right, bottom, top, nearVal, farVal);
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else
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return frustumRH_ZO(left, right, bottom, top, nearVal, farVal);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumNO(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
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return frustumLH_NO(left, right, bottom, top, nearVal, farVal);
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else
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return frustumRH_NO(left, right, bottom, top, nearVal, farVal);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumLH(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
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return frustumLH_ZO(left, right, bottom, top, nearVal, farVal);
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else
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return frustumLH_NO(left, right, bottom, top, nearVal, farVal);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustumRH(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
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return frustumRH_ZO(left, right, bottom, top, nearVal, farVal);
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else
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return frustumRH_NO(left, right, bottom, top, nearVal, farVal);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> frustum(T left, T right, T bottom, T top, T nearVal, T farVal)
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{
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if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO)
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return frustumLH_ZO(left, right, bottom, top, nearVal, farVal);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO)
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return frustumLH_NO(left, right, bottom, top, nearVal, farVal);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO)
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return frustumRH_ZO(left, right, bottom, top, nearVal, farVal);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO)
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return frustumRH_NO(left, right, bottom, top, nearVal, farVal);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveRH_ZO(T fovy, T aspect, T zNear, T zFar)
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{
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assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0));
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T const tanHalfFovy = tan(fovy / static_cast<T>(2));
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mat<4, 4, T, defaultp> Result(static_cast<T>(0));
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Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy);
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Result[1][1] = static_cast<T>(1) / (tanHalfFovy);
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Result[2][2] = zFar / (zNear - zFar);
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Result[2][3] = - static_cast<T>(1);
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Result[3][2] = -(zFar * zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveRH_NO(T fovy, T aspect, T zNear, T zFar)
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{
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assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0));
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T const tanHalfFovy = tan(fovy / static_cast<T>(2));
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mat<4, 4, T, defaultp> Result(static_cast<T>(0));
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Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy);
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Result[1][1] = static_cast<T>(1) / (tanHalfFovy);
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Result[2][2] = - (zFar + zNear) / (zFar - zNear);
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Result[2][3] = - static_cast<T>(1);
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Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveLH_ZO(T fovy, T aspect, T zNear, T zFar)
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{
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assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0));
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T const tanHalfFovy = tan(fovy / static_cast<T>(2));
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mat<4, 4, T, defaultp> Result(static_cast<T>(0));
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Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy);
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Result[1][1] = static_cast<T>(1) / (tanHalfFovy);
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Result[2][2] = zFar / (zFar - zNear);
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Result[2][3] = static_cast<T>(1);
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Result[3][2] = -(zFar * zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveLH_NO(T fovy, T aspect, T zNear, T zFar)
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{
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assert(abs(aspect - std::numeric_limits<T>::epsilon()) > static_cast<T>(0));
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T const tanHalfFovy = tan(fovy / static_cast<T>(2));
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mat<4, 4, T, defaultp> Result(static_cast<T>(0));
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Result[0][0] = static_cast<T>(1) / (aspect * tanHalfFovy);
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Result[1][1] = static_cast<T>(1) / (tanHalfFovy);
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Result[2][2] = (zFar + zNear) / (zFar - zNear);
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Result[2][3] = static_cast<T>(1);
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Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveZO(T fovy, T aspect, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
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return perspectiveLH_ZO(fovy, aspect, zNear, zFar);
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else
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return perspectiveRH_ZO(fovy, aspect, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveNO(T fovy, T aspect, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
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return perspectiveLH_NO(fovy, aspect, zNear, zFar);
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else
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return perspectiveRH_NO(fovy, aspect, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveLH(T fovy, T aspect, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
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return perspectiveLH_ZO(fovy, aspect, zNear, zFar);
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else
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return perspectiveLH_NO(fovy, aspect, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveRH(T fovy, T aspect, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
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return perspectiveRH_ZO(fovy, aspect, zNear, zFar);
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else
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return perspectiveRH_NO(fovy, aspect, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspective(T fovy, T aspect, T zNear, T zFar)
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{
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if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO)
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return perspectiveLH_ZO(fovy, aspect, zNear, zFar);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO)
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return perspectiveLH_NO(fovy, aspect, zNear, zFar);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO)
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return perspectiveRH_ZO(fovy, aspect, zNear, zFar);
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else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO)
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return perspectiveRH_NO(fovy, aspect, zNear, zFar);
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovRH_ZO(T fov, T width, T height, T zNear, T zFar)
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{
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assert(width > static_cast<T>(0));
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assert(height > static_cast<T>(0));
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assert(fov > static_cast<T>(0));
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T const rad = fov;
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T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad);
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T const w = h * height / width; ///todo max(width , Height) / min(width , Height)?
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mat<4, 4, T, defaultp> Result(static_cast<T>(0));
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Result[0][0] = w;
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Result[1][1] = h;
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Result[2][2] = zFar / (zNear - zFar);
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Result[2][3] = - static_cast<T>(1);
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Result[3][2] = -(zFar * zNear) / (zFar - zNear);
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return Result;
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}
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template<typename T>
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GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovRH_NO(T fov, T width, T height, T zNear, T zFar)
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{
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assert(width > static_cast<T>(0));
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assert(height > static_cast<T>(0));
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assert(fov > static_cast<T>(0));
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T const rad = fov;
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T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad);
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T const w = h * height / width; ///todo max(width , Height) / min(width , Height)?
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mat<4, 4, T, defaultp> Result(static_cast<T>(0));
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Result[0][0] = w;
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Result[1][1] = h;
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Result[2][2] = - (zFar + zNear) / (zFar - zNear);
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Result[2][3] = - static_cast<T>(1);
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Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear);
|
|
return Result;
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovLH_ZO(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
assert(width > static_cast<T>(0));
|
|
assert(height > static_cast<T>(0));
|
|
assert(fov > static_cast<T>(0));
|
|
|
|
T const rad = fov;
|
|
T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad);
|
|
T const w = h * height / width; ///todo max(width , Height) / min(width , Height)?
|
|
|
|
mat<4, 4, T, defaultp> Result(static_cast<T>(0));
|
|
Result[0][0] = w;
|
|
Result[1][1] = h;
|
|
Result[2][2] = zFar / (zFar - zNear);
|
|
Result[2][3] = static_cast<T>(1);
|
|
Result[3][2] = -(zFar * zNear) / (zFar - zNear);
|
|
return Result;
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovLH_NO(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
assert(width > static_cast<T>(0));
|
|
assert(height > static_cast<T>(0));
|
|
assert(fov > static_cast<T>(0));
|
|
|
|
T const rad = fov;
|
|
T const h = glm::cos(static_cast<T>(0.5) * rad) / glm::sin(static_cast<T>(0.5) * rad);
|
|
T const w = h * height / width; ///todo max(width , Height) / min(width , Height)?
|
|
|
|
mat<4, 4, T, defaultp> Result(static_cast<T>(0));
|
|
Result[0][0] = w;
|
|
Result[1][1] = h;
|
|
Result[2][2] = (zFar + zNear) / (zFar - zNear);
|
|
Result[2][3] = static_cast<T>(1);
|
|
Result[3][2] = - (static_cast<T>(2) * zFar * zNear) / (zFar - zNear);
|
|
return Result;
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovZO(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
|
|
return perspectiveFovLH_ZO(fov, width, height, zNear, zFar);
|
|
else
|
|
return perspectiveFovRH_ZO(fov, width, height, zNear, zFar);
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovNO(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
|
|
return perspectiveFovLH_NO(fov, width, height, zNear, zFar);
|
|
else
|
|
return perspectiveFovRH_NO(fov, width, height, zNear, zFar);
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovLH(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
|
|
return perspectiveFovLH_ZO(fov, width, height, zNear, zFar);
|
|
else
|
|
return perspectiveFovLH_NO(fov, width, height, zNear, zFar);
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFovRH(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT)
|
|
return perspectiveFovRH_ZO(fov, width, height, zNear, zFar);
|
|
else
|
|
return perspectiveFovRH_NO(fov, width, height, zNear, zFar);
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> perspectiveFov(T fov, T width, T height, T zNear, T zFar)
|
|
{
|
|
if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_ZO)
|
|
return perspectiveFovLH_ZO(fov, width, height, zNear, zFar);
|
|
else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_LH_NO)
|
|
return perspectiveFovLH_NO(fov, width, height, zNear, zFar);
|
|
else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_ZO)
|
|
return perspectiveFovRH_ZO(fov, width, height, zNear, zFar);
|
|
else if(GLM_CONFIG_CLIP_CONTROL == GLM_CLIP_CONTROL_RH_NO)
|
|
return perspectiveFovRH_NO(fov, width, height, zNear, zFar);
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> infinitePerspectiveRH(T fovy, T aspect, T zNear)
|
|
{
|
|
T const range = tan(fovy / static_cast<T>(2)) * zNear;
|
|
T const left = -range * aspect;
|
|
T const right = range * aspect;
|
|
T const bottom = -range;
|
|
T const top = range;
|
|
|
|
mat<4, 4, T, defaultp> Result(static_cast<T>(0));
|
|
Result[0][0] = (static_cast<T>(2) * zNear) / (right - left);
|
|
Result[1][1] = (static_cast<T>(2) * zNear) / (top - bottom);
|
|
Result[2][2] = - static_cast<T>(1);
|
|
Result[2][3] = - static_cast<T>(1);
|
|
Result[3][2] = - static_cast<T>(2) * zNear;
|
|
return Result;
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> infinitePerspectiveLH(T fovy, T aspect, T zNear)
|
|
{
|
|
T const range = tan(fovy / static_cast<T>(2)) * zNear;
|
|
T const left = -range * aspect;
|
|
T const right = range * aspect;
|
|
T const bottom = -range;
|
|
T const top = range;
|
|
|
|
mat<4, 4, T, defaultp> Result(T(0));
|
|
Result[0][0] = (static_cast<T>(2) * zNear) / (right - left);
|
|
Result[1][1] = (static_cast<T>(2) * zNear) / (top - bottom);
|
|
Result[2][2] = static_cast<T>(1);
|
|
Result[2][3] = static_cast<T>(1);
|
|
Result[3][2] = - static_cast<T>(2) * zNear;
|
|
return Result;
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> infinitePerspective(T fovy, T aspect, T zNear)
|
|
{
|
|
if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
|
|
return infinitePerspectiveLH(fovy, aspect, zNear);
|
|
else
|
|
return infinitePerspectiveRH(fovy, aspect, zNear);
|
|
}
|
|
|
|
// Infinite projection matrix: http://www.terathon.com/gdc07_lengyel.pdf
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> tweakedInfinitePerspective(T fovy, T aspect, T zNear, T ep)
|
|
{
|
|
T const range = tan(fovy / static_cast<T>(2)) * zNear;
|
|
T const left = -range * aspect;
|
|
T const right = range * aspect;
|
|
T const bottom = -range;
|
|
T const top = range;
|
|
|
|
mat<4, 4, T, defaultp> Result(static_cast<T>(0));
|
|
Result[0][0] = (static_cast<T>(2) * zNear) / (right - left);
|
|
Result[1][1] = (static_cast<T>(2) * zNear) / (top - bottom);
|
|
Result[2][2] = ep - static_cast<T>(1);
|
|
Result[2][3] = static_cast<T>(-1);
|
|
Result[3][2] = (ep - static_cast<T>(2)) * zNear;
|
|
return Result;
|
|
}
|
|
|
|
template<typename T>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, defaultp> tweakedInfinitePerspective(T fovy, T aspect, T zNear)
|
|
{
|
|
return tweakedInfinitePerspective(fovy, aspect, zNear, epsilon<T>());
|
|
}
|
|
}//namespace glm
|