Houdini Tutorial - Blowing your image away Part 1

[scubedio]

i have one problem... its taking huge time to simulate the particles after applying the color..... did I'm doing anything wrong.... but the tutorial its seems to be going smooth....in fact i'm using Z600 HP....any suggestions??

[lloyddon]

in side the point sop under color

pic("/img/img1/blah_tga",$BBX,­$BBZ,D_CR)

pic("/img/img1/blah_tga",$BBX,­$BBZ,D_CG)

pic("/img/img1/blah_tga",$BBX,­$BBZ,D_CB)

replace blah_tga with your file 

[GeorgeNakhle]

hi alisavvi, posting the whole expression would be good, because the problem is not with the D_CR, i bet there is a typo somewhere

[alisavvi]

D_CR does not work for me, houdini says "no matching functions" help me plz really need to get this to work..

[GeorgeNakhle]

Quote from the houdini docs:

"BBX, BBY, BBZ : Relative position of point within bounding box. Values are mapped between 0 and 1." , so we use these values to get the corresponding color from the image in the image context.

[leahless]

How did you find the 'BBX and BBZ'?