69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
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#ifndef __VCGTEST_SPHEREDIFFERENCE
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#define __VCGTEST_SPHEREDIFFERENCE
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class SphereDifference
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{
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public:
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SphereDifference()
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{}
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SphereDifference( const SphereDifference &sphere_difference)
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{
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_union = sphere_difference._union;
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_sphere = sphere_difference._sphere;
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}
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SphereDifference( const SphereUnion &sphere_union, const ImplicitSphere &sphere)
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{
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_union = sphere_union;
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_sphere = sphere;
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}
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float V(int x, int y, int z)
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{
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return vcg::math::Max<float>(_union.V(x, y, z), -_sphere.V(x, y, z));
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}
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inline bool DirectedDistance(const vcg::Point3i p1, const vcg::Point3i p2, vcg::Point3f &p, vcg::Point3f &n, float &d)
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{
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vcg::Point3f v1, n1;
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vcg::Point3f v2, n2;
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float d1, d2;
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bool ok1 = _union.DirectedDistance(p1, p2, v1, n1, d1);
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bool ok2 = _sphere.DirectedDistance(p1, p2, v2, n2, d2);
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d2 = -d2;
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if (ok1 && ok2)
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{
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if (d1 > d2)
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ok2 = false;
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else
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ok1 = false;
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}
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if (ok1)
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{
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p = v1;
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n = n1;
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d = d1;
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return true;
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}
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else if (ok2)
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{
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p = v2;
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n = n2;
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d = d2;
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return true;
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}
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return false;
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}
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private:
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SphereUnion _union;
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ImplicitSphere _sphere;
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};
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#endif // __VCGTEST_SPHEREDIFFERENCE
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