optix::GeometryInstance PolygonMesh::makeGeometry( optix::Context &m_context, optix::Material material ) {
if (!initialised) {
throw runtime_error("mesh programs not initialised");
}
optix::GeometryGroup model_group = m_context->createGeometryGroup();
ObjLoader objloader0(model.filepath.c_str(), m_context, model_group, material);
objloader0.setBboxProgram(bounding_box);
objloader0.setIntersectProgram(intersection);
objloader0.load(model.transform);
model.tr = m_context->createTransform();
model.tr->setChild(model_group);
setPosition(model.tr, model.position, model_rot);
optix::GeometryInstance gi = model_group->getChild(0);
setMaterial(gi, material, "diffuse_color", model.colour);
return gi;
}
void Object::optixInit(optix::Context context) {
try {
// Make geometry group
Optix.geometryGroup = context->createGeometryGroup();
Optix.geometryGroup->setAcceleration(context->createAcceleration(OPTIX_GEOMETRY_BUILDER, OPTIX_GEOMETRY_TRAVERSER)); // TODO: Look into different traversers/builders
// Add geometries
for (uint i = 0; i < geometries.size(); i++) {
geometries[i]->optixInit(context);
Optix.geometryGroup->addChild(((TriangleMesh*)geometries[i])->Optix.geometryInstance);
}
// Make transform
Optix.transform = context->createTransform();
Optix.transform->setChild(Optix.geometryGroup);
Optix.transform->setMatrix(true, matrix.e, NULL);
} catch (optix::Exception e) {
printException(e);
}
}
optix::Transform Transform::getOptixTransform( optix::Context& context )
{
optix::Transform t = context->createTransform();
t->setMatrix(false, this->arr, NULL);
return t;
}