Alias defFrustum
Build an frustum perspective projection matrix with default NDC and DepthClip
Parameters
| Name | Description |
|---|---|
| l | X position of the left edge at the near plane |
| r | X position of the right edge at the near plane |
| b | Y position of the bottom edge at the near plane |
| t | Y position of the top edge at the near plane |
| n | distance from origin to near plane (in Z-) |
| f | distance from origin to far plane (in Z-) |
Returns
a matrix that maps from eye space to clip space. To obtain NDC, the vector must be divided by w.