Raycasting is the rst step in raytracing, which allows us to calculate a correct shade for each pixel. For now, let us look just at the raycasting problem. The diagram to the right will help us to …

Efficient ray tracing of volume data. ACM Transactions on Graphics, 9(3):245-261, 1990. S. Parker et al., Interactive ray tracing for volume visualization. IEEE Transactions on …

Computation of the light that is transported along primary rays. Which color does it have? Secondary rays are used. Outgoing light into direction (primary ray) is a sum of incident light …

For each sample ... Check if point inside triangle. BSP trees Next Time!

Raycasting is historically the first volume rendering technique. It has common with raytracing: A ray template (Yagel 1991) is a voxelized ray which by translating generates all view rays. Ray …

A common algorithm is raycasting Also known sometimes as scan-line rendering This is Maya’s default software rendering approach Maya calls it simply “Maya Software” Raycasting is …

Transform ray into object space! How do we transform the ray's origin and direction? How do we transform the ray's direction? WS OS? Then tws = tos ! How do we transform the normal back …