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Add LoaderDFF normal calculation for models without

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This commit is contained in:
Daniel Evans 2015-03-30 22:15:55 +01:00
parent 33e9920b48
commit 8b1f539b12
1 changed files with 15 additions and 1 deletions
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16
rwengine/src/loaders/LoaderDFF.cpp
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@ -191,7 +191,8 @@ void LoaderDFF::readGeometry(Model *model, const RWBStream &stream)
} }
} }
// Skip indicies data for now. // Grab indicies data to generate normals (if applicable).
RW::BSGeometryTriangle* triangles = (RW::BSGeometryTriangle*)headerPtr;
headerPtr += sizeof(RW::BSGeometryTriangle) * numTris; headerPtr += sizeof(RW::BSGeometryTriangle) * numTris;
geom->geometryBounds = *(RW::BSGeometryBounds*)headerPtr; geom->geometryBounds = *(RW::BSGeometryBounds*)headerPtr;
@ -209,6 +210,19 @@ void LoaderDFF::readGeometry(Model *model, const RWBStream &stream)
headerPtr += sizeof(glm::vec3); headerPtr += sizeof(glm::vec3);
} }
} }
else {
// Use triangle data to calculate normals for each vert.
for( int t = 0; t < numTris; ++t ) {
auto& triangle = triangles[t];
auto& A = verts[triangle.first];
auto& B = verts[triangle.second];
auto& C = verts[triangle.third];
auto normal = glm::normalize(glm::cross(C.position-A.position, B.position-A.position));
A.normal = normal;
B.normal = normal;
C.normal = normal;
}
}
// Add the geometry to the model now so that it can be accessed. // Add the geometry to the model now so that it can be accessed.
model->geometries.push_back(geom); model->geometries.push_back(geom);