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Group should work now.

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Godzil
2020-02-24 17:25:54 +00:00
parent 7c794f0496
commit 7bbe5e843b
5 changed files with 40 additions and 10 deletions
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19
source/shapes/shape.cpp
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@@ -27,18 +27,25 @@ Intersect Shape::intersect(Ray r)
return this->localIntersect(this->invTransform(r));
};
Tuple Shape::normalAt(Tuple point)
Tuple Shape::normalToWorld(Tuple normalVector)
{
Tuple local_point = this->inverseTransform * point;
Tuple local_normal = this->localNormalAt(local_point);
Tuple world_normal = this->transposedInverseTransform * local_normal;
Tuple world_normal = this->transposedInverseTransform * normalVector;
/* W may get wrong, so hack it. This is perfectly normal as we are using a 4x4 matrix instead of a 3x3 */
world_normal.w = 0;
return world_normal.normalise();
};
Tuple Shape::normalAt(Tuple point)
{
Tuple local_point = this->worldToObject(point);
Tuple local_normal = this->localNormalAt(local_point);
Tuple world_normal = this->normalToWorld(local_normal);
return world_normal;
}
void Shape::updateTransform()