Camera ray creation outputs. More...
#include <ai_cameras.h>
Data Fields | |
| AtVector | origin |
| ray origin in camera space (required) | |
| AtVector | dir |
| ray direction in camera space (required) | |
| AtVector | dOdx |
| AtVector | dOdy |
| derivative of the ray origin with respect to the pixel coordinates (optional - defaults to 0) | |
| AtVector | dDdx |
| AtVector | dDdy |
| derivative of the ray direction with respect to the pixel coordinates (optional - defaults to 0) | |
| AtRGB | weight |
| weight of this ray (used for vignetting) (optional - defaults to AI_RGB_WHITE) | |
Camera ray creation outputs.
If the d*d* derivatives are left to their default value of zero, an accurate numerical estimate will be automatically computed for them to prevent catastrophic degradation of texture IO performance. Note that this estimate might not be as good as analytically computed derivatives but will often be good enough.
