inline void tglMultMatrix(const math::Matrix4& matrix)
{
#if defined(TAU_SCALAR_DOUBLE)
glMultTransposeMatrixd((const double*)matrix.getData());
#else
glMultTransposeMatrixf((const float*)matrix.getData());
#endif
}
void TinyGLRenderer::setupCameraPerspective(float pitch, float heading, float fov) {
// TODO: Find a correct and exact formula for the FOV
TGLfloat glFOV = 0.63 * fov; // Approximative and experimental formula
if (fov > 79.0 && fov < 81.0)
glFOV = 50.5; // Somewhat good value for fov == 80
else if (fov > 59.0 && fov < 61.0)
glFOV = 36.0; // Somewhat good value for fov == 60
// NOTE: tinyGL viewport implementation needs to be checked as it doesn't behave the same as openGL
tglViewport(0, kTopBorderHeight, kOriginalWidth, kFrameHeight);
tglMatrixMode(TGL_PROJECTION);
tglLoadIdentity();
Math::Matrix4 m = Math::makePerspectiveMatrix(glFOV, (TGLfloat)kOriginalWidth / (TGLfloat)kFrameHeight, 1.0, 10000.0);
tglMultMatrixf(m.getData());
// Rotate the model to simulate the rotation of the camera
tglMatrixMode(TGL_MODELVIEW);
tglLoadIdentity();
tglRotatef(pitch, -1.0f, 0.0f, 0.0f);
tglRotatef(heading - 180.0f, 0.0f, 1.0f, 0.0f);
tglGetFloatv(TGL_MODELVIEW_MATRIX, _cubeModelViewMatrix);
tglGetFloatv(TGL_PROJECTION_MATRIX, _cubeProjectionMatrix);
tglGetIntegerv(TGL_VIEWPORT, (TGLint *)_cubeViewport);
}
void OpenGLRenderer::setupCameraPerspective(float pitch, float heading, float fov) {
// TODO: Find a correct and exact formula for the FOV
GLfloat glFOV = 0.63 * fov; // Approximative and experimental formula
if (fov > 79.0 && fov < 81.0)
glFOV = 50.5; // Somewhat good value for fov == 80
else if (fov > 59.0 && fov < 61.0)
glFOV = 36.0; // Somewhat good value for fov == 60
Common::Rect frame = frameViewport();
glViewport(frame.left, frame.top, frame.width(), frame.height());
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
Math::Matrix4 m = Math::makePerspectiveMatrix(glFOV, (GLfloat)kOriginalWidth / (GLfloat)kFrameHeight, 1.0, 10000.0);
glMultMatrixf(m.getData());
// Rotate the model to simulate the rotation of the camera
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRotatef(pitch, -1.0f, 0.0f, 0.0f);
glRotatef(heading - 180.0f, 0.0f, 1.0f, 0.0f);
glGetDoublev(GL_MODELVIEW_MATRIX, _cubeModelViewMatrix);
glGetDoublev(GL_PROJECTION_MATRIX, _cubeProjectionMatrix);
glGetIntegerv(GL_VIEWPORT, (GLint *)_cubeViewport);
}