hoknamahn Posted June 4, 2008 Share Posted June 4, 2008 I'm looking for a method which allows to calculate a bounding box of a point cloud. The only one method I see is getBoundingBox() from GU_PointSelection.h But in this case I have to create a point group. Is there any other method which can calculate bounding box using points without groups? Or which method is more streightforward. Quote Link to comment Share on other sites More sharing options...
hoknamahn Posted June 4, 2008 Author Share Posted June 4, 2008 P. S. I can give getBoundingBox() the name of point group and it works just fine. But I'm wondering is it possible to say "select all points in gdp please"? Something like wildcard *... Quote Link to comment Share on other sites More sharing options...
Allegro Posted June 4, 2008 Share Posted June 4, 2008 P. S. I can give getBoundingBox() the name of point group and it works just fine. But I'm wondering is it possible to say "select all points in gdp please"? Something like wildcard *... does the bbox() expression not work for you? you can also plug geometry into a box node and it will make the box the size of the input's bbox. Quote Link to comment Share on other sites More sharing options...
hoknamahn Posted June 4, 2008 Author Share Posted June 4, 2008 does the bbox() expression not work for you?you can also plug geometry into a box node and it will make the box the size of the input's bbox. Unfortunately HScript expressions doesn't work in HDK land Quote Link to comment Share on other sites More sharing options...
Mario Marengo Posted June 4, 2008 Share Posted June 4, 2008 Hey Hok, I haven't tried this, but I see a getPointBBox() function implemented in GEO_Detail. Maybe that one works for you. Ultimately, if everything fails, you could just loop through all points to find the axis-aligned extents and instance your own UT/UT_BoundingBox. There's also an octree variant for a fixed number of points in UT/UT_PointTree, but if you don't need the hierarchical partitioning then that's likely overkill. Quote Link to comment Share on other sites More sharing options...
hoknamahn Posted June 4, 2008 Author Share Posted June 4, 2008 Hey Hok,I haven't tried this, but I see a getPointBBox() function implemented in GEO_Detail. Maybe that one works for you. Ultimately, if everything fails, you could just loop through all points to find the axis-aligned extents and instance your own UT/UT_BoundingBox. There's also an octree variant for a fixed number of points in UT/UT_PointTree, but if you don't need the hierarchical partitioning then that's likely overkill. Hi Mario, Thanks, I didn't see this method. Have to take a look. I though about looping through points but if we have something already implemented why not to use it? Quote Link to comment Share on other sites More sharing options...
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