static void EERIE_CreateMatriceProj(float width, float height, EERIE_CAMERA * cam) {
float fov = focalToFov(cam->focal);
const float nearDist = 1.f;
const float farDist = cam->cdepth;
const float frustumDepth = farDist - nearDist;
float aspect = height / width;
float w = aspect * (glm::cos(fov / 2) / glm::sin(fov / 2));
float h = 1.0f * (glm::cos(fov / 2) / glm::sin(fov / 2));
float Q = farDist / frustumDepth;
cam->ProjectionMatrix = glm::mat4x4();
cam->ProjectionMatrix[0][0] = w;
cam->ProjectionMatrix[1][1] = h;
cam->ProjectionMatrix[2][2] = Q;
cam->ProjectionMatrix[3][2] = (-Q * nearDist);
cam->ProjectionMatrix[2][3] = 1.f;
cam->ProjectionMatrix[3][3] = 0.f;
GRenderer->SetProjectionMatrix(cam->ProjectionMatrix);
glm::mat4 tempViewMatrix = Util_SetViewMatrix(cam->orgTrans);
GRenderer->SetViewMatrix(tempViewMatrix);
cam->ProjectionMatrix[0][0] *= width * .5f;
cam->ProjectionMatrix[1][1] *= height * .5f;
cam->ProjectionMatrix[2][2] = -(farDist * nearDist) / frustumDepth; //HYPERBOLIC
cam->ProjectionMatrix[3][2] = Q;
GRenderer->SetViewport(Rect(static_cast<s32>(width), static_cast<s32>(height)));
}
static glm::mat4x4 createProjectionMatrix(const Vec2f & size, const Vec2f & center, Camera * cam) {
float fov = focalToFov(cam->focal);
const float nearDist = 1.f;
const float farDist = cam->cdepth;
const float frustumDepth = farDist - nearDist;
float aspectw = (size.y < size.x) ? size.y / size.x : 1.f;
float aspecth = (size.y < size.x) ? 1.f : size.x / size.y;
float w = aspectw * (glm::cos(fov / 2) / glm::sin(fov / 2));
float h = aspecth * (glm::cos(fov / 2) / glm::sin(fov / 2));
float Q = farDist / frustumDepth;
glm::mat4x4 projectionMatrix;
projectionMatrix[0][0] = w;
projectionMatrix[1][1] = -h;
projectionMatrix[2][2] = Q;
projectionMatrix[3][2] = -Q * nearDist;
projectionMatrix[2][3] = 1.f;
projectionMatrix[3][3] = 0.f;
glm::mat4x4 centerShift(1);
centerShift = glm::translate(centerShift, Vec3f(2.f * center.x / size.x - 1.f,
1.f - 2.f * center.y / size.y,
0.f));
return centerShift * projectionMatrix;
}
