Chroma Geometry Source Overview

chroma/cuda/geometry_types.h

46 struct Node
47 {
48     float3 lower;
49     float3 upper;
50     unsigned int child;
51     unsigned int nchild;
52 };
53
54 struct Geometry
55 {
56     float3 *vertices;
57     uint3 *triangles;
58     unsigned int *material_codes;
59     unsigned int *colors;
60     uint4 *primary_nodes;
61     uint4 *extra_nodes;
62     Material **materials;
63     Surface **surfaces;
64     float3 world_origin;
65     float world_scale;
66     int nprimary_nodes;
67 };

• http://stackoverflow.com/a/4838734

chroma/gpu/geometry.py

GPUGeometry class that converts into GPU side geometry using CUDA types from geometry_types.h

simon:chroma blyth$ find . -name '*.py' -exec grep -H GPUGeometry {} \;
./camera.py:        self.gpu_geometry = gpu.GPUGeometry(self.geometry)
./camera.py:                gpu_geometry = gpu.GPUGeometry(geometry, print_usage=False)
./camera.py:        gpu_geometry = gpu.GPUGeometry(geometry)
./gpu/detector.py:from chroma.gpu.geometry import GPUGeometry
./gpu/detector.py:class GPUDetector(GPUGeometry):
./gpu/detector.py:        GPUGeometry.__init__(self, detector, wavelengths=wavelengths, print_usage=False)
./gpu/geometry.py:class GPUGeometry(object):
./sim.py:            self.gpu_geometry = gpu.GPUGeometry(detector)

chroma/loader.py

def load_geometry_from_string

28       "filename.stl" or "filename.stl.bz2" - Create a geometry from a
29           3D mesh on disk.  This model will not be cached, but the
30           BVH can be, depending on whether update_bvh_cache is True.

chroma/stl.py

Parse STL files (simple format of vertices and triangles) into Mesh objects.

chroma/geometry.py

Mesh object, comprising arrays of vertices and triangles

chroma/bvh/bvh.py