//设置视图与透视投影矩阵
void CCDirector::setMVP(){
setViewport();
CCSize size = m_obWinSizeInPoints;
//获得眼睛位置
//float zeye = this->getZEye();
float zeye = m_obWinSizeInPoints.height / 1.1566f;
// float zeye = 480.0f / 1.1566f;//算出来是1.1547 不知道哪里算错了
Matrix44 matrixPerspective, matrixLookup;
//设置当前矩阵为投影矩阵，对投影矩阵进行操作
mglMatrixMode(KM_GL_PROJECTION);
mglLoadIdentity();
// matrixPerspective = mgluPerspective(60.0f/180.0f*M_PI, 640/480.0f, 0.1f, 2*zeye);
matrixPerspective = mgluPerspective(60.0f/180.0f*M_PI, size.width/size.height, 0.1f, 2*zeye);
mglMultMatrix(&matrixPerspective);
//设置观察矩阵
mglMatrixMode(KM_GL_MODELVIEW);
mglLoadIdentity();
// matrixLookup = mglLookAt(640.0f/2, 480.0f/2, zeye, 640.0f/2, 480.0f/2, 0.0f, 0, 1, 0.0f);
matrixLookup = mglLookAt(size.width/2, size.height/2, zeye, size.width/2, size.height/2, 0.0f, 0.0f, 1.0f, 0.0f);
mglMultMatrix(&matrixLookup);
}
/**
* Sets up the camera for the context.
*
* The current OpenGL matrix is modified.
*
* @param context
* The context.
*/
static void
camera_setup(Context *context)
{
glMatrixMode(GL_MODELVIEW);
mgluPerspective(45, context->gl.ratio, CAMERA_Z - 1.5, CAMERA_Z + 1.0);
mgluLookAt(
context->camera.x,
context->maze.data->height - context->camera.y,
CAMERA_Z,
context->target.x,
context->maze.data->height - context->target.y,
TARGET_Z,
0.1, 1.0, 0.0);
}