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MYST3: Implement opcode 163 - Set camera FOV

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This commit is contained in:
Bastien Bouclet 2012-01-28 12:37:51 +01:00
parent 52f33cac75
commit b9fa7eeffa
8 changed files with 31 additions and 12 deletions
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11
engines/myst3/gfx.cpp
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@ -152,11 +152,18 @@ void Renderer::setupCameraOrtho2D() {
glLoadIdentity();
}
void Renderer::setupCameraPerspective(float pitch, float heading) {
void Renderer::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
glViewport(0, kBottomBorderHeight, kOriginalWidth, kFrameHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(50.5, (GLfloat)kOriginalWidth / (GLfloat)kFrameHeight, 1.0, 10000.0);
gluPerspective(glFOV, (GLfloat)kOriginalWidth / (GLfloat)kFrameHeight, 1.0, 10000.0);
// Rotate the model to simulate the rotation of the camera
glMatrixMode(GL_MODELVIEW);