Having trouble with projection matrix, need help
- by Mr.UNOwen
I'm having trouble with what appears to be the projection matrix. Given a wide enough of a screen, when a cube is on the left and right most edge, the left or right wall will appear stretched to the point that the front face is 1/10 the width of the side. So I do update the screen ratio along with the projection matrix and view port on screen resize, am I safe to assume all the trouble is from the matrix class? Also the cube follows the mouse, but it's only vertically aligned and ahead of the mouse when going left or right from the center of the screen.
Perspective function call:
* setPerspective
*
* @param fov: angle in radians
* @param aspect: screen ratio w/h
* @param near: near distance
* @param far: far distance
**/
void APCamera::setPerspective(GMFloat_t fov, GMFloat_t aspect, GMFloat_t near, GMFloat_t far)
{
GMFloat_t difZ = near - far;
GMFloat_t *data;
mProjection->clear(); //set to identity matrix
data = mProjection->getData();
GMFloat_t v = 1.0f / tan(fov / 2.0f);
data[_AP_MAA] = v / aspect;
data[_AP_MBB] = v;
data[_AP_MCC] = (far + near) / difZ;
data[_AP_MCD] = -1.0f;
data[_AP_MDD] = 0.0f;
data[_AP_MDC] = 2.0f * far * near/ difZ;
mRatio = aspect;
mInvProjOutdated = true;
mIsPerspective = true;
}
and...
#define _AP_MAA 0
#define _AP_MAB 1
#define _AP_MAC 2
#define _AP_MAD 3
#define _AP_MBA 4
#define _AP_MBB 5
#define _AP_MBC 6
#define _AP_MBD 7
#define _AP_MCA 8
#define _AP_MCB 9
#define _AP_MCC 10
#define _AP_MCD 11
#define _AP_MDA 12
#define _AP_MDB 13
#define _AP_MDC 14
#define _AP_MDD 15
