/**
* Replaces the projection matrix by the one generated by the camera. The matrix mode will be
* returned it its previous value. to GL_MODELVIEW.
*/
public void applyPerspectiveMatrix() {
int previousMatrixMode = glGetInteger(GL_MATRIX_MODE);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
GLU.gluPerspective(fov, aspectRatio, zNear, zFar);
glMatrixMode(previousMatrixMode);
}
/**
* Applies an orthographic projection matrix. The matrix mode will be returned it its previous
* value. GL_MODELVIEW.
*/
public void applyOrthographicMatrix() {
int previousMatrixMode = glGetInteger(GL_MATRIX_MODE);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// TODO: Add aspect ratio handling for glOrtho
glOrtho(-1, 1, -1, 1, 0, 10000);
glMatrixMode(previousMatrixMode);
}
/** Applies the camera translations along the three axes to the model-view matrix. */
public void applyTranslations() {
int previousMatrixMode = glGetInteger(GL_MATRIX_MODE);
glMatrixMode(GL_MODELVIEW);
glRotatef(pitch, 1, 0, 0);
glRotatef(yaw, 0, 1, 0);
glRotatef(roll, 0, 0, 1);
glTranslatef(-x, -y, -z);
glMatrixMode(previousMatrixMode);
}