Anyone knows how many colour does osg support? I would like to generate 65536
colour map by using the code below. The size of the object colorMap is 65535.
Is it possible? I am sure osg can support 8 bit colour, how about 32bit?
Thanks.
osg::TransferFunction1D::ColorMap colorMap;
double fcr = 255.0;
int ri, gi, bi, ai, cc;
int step = 16;
int rgb_step = fcr /(step-1);
int a_step = (fcr +1) / step;
cc = 0;
colorMap[0] = osg::Vec4(0.0f, 0.0f, 0.0f, 0.0f);
for (int r=0; r<step; r++) {
ri = r*rgb_step;
for (int g=0; g<step; g++) {
gi = g*rgb_step;
for (int b=0; b<step; b++) {
bi = b*rgb_step;
for (int a=1; a<=step; a++) {
ai = min(a*a_step, fcr );
cc++;
colorMap[cc] = osg::Vec4(ri/fcr,
gi/fcr, bi/fcr, ai/fcr);
}
}
}
}
tf->assign(colorMap);
Regards,
Clement
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
