Very cool and very uncool. Cool: that it works in a decent way, and uses a neat trick. Uncool: You can't export the image into a 3D file, making it 99% less u

Very cool and very uncool. Cool: that it works in a decent way, and uses a neat trick. Uncool: You can't export the image into a 3D file, making it 99% less useful that it would be otherwise. Suggestion: export it as VRML, it's trivial format that you can generate starting from your points. Use this format (from my own code, so use it as you wish): fprintf(fp, "#VRML V2.0 utf8\n" "Shape {\n" " appearance Appearance {\n" " material Material {\n" " diffuseColor .5 .5 .5\n" " }\n" " }\n" " geometry ElevationGrid {\n" " xDimension %d\n" " zDimension %d\n" " xSpacing 0.01\n" " zSpacing 0.01\n" " solid FALSE\n" " creaseAngle 6.28\n" " height [\n", hgt->width, hgt->height ); for (y = 0; y < hgt->height ; y++) { for (x = 0; x < hgt->width; x++) { height = getheight(x,y); h *= YOUR_3D_MULT_FACTOR; fprintf(fp, "%f", h); if (y != hgt->height-1 && x != hgt->width-1) fprintf(fp,","); if (x == hgt->width) fprintf(fp,"\n"); } } fprintf(fp, " ]\n" " }\n" "}\n" 3d studio and other programs will happily import this stuff.