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31 lines
929 B
C++
31 lines
929 B
C++
// This code is in the public domain -- castanyo@yahoo.es
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#include "nvmath/Box.h"
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#include "nvmath/Sphere.h"
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using namespace nv;
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float nv::distanceSquared(const Box &box, const Vector3 &point) {
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Vector3 closest;
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if (point.x < box.minCorner.x) closest.x = box.minCorner.x;
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else if (point.x > box.maxCorner.x) closest.x = box.maxCorner.x;
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else closest.x = point.x;
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if (point.y < box.minCorner.y) closest.y = box.minCorner.y;
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else if (point.y > box.maxCorner.y) closest.y = box.maxCorner.y;
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else closest.y = point.y;
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if (point.z < box.minCorner.z) closest.z = box.minCorner.z;
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else if (point.z > box.maxCorner.z) closest.z = box.maxCorner.z;
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else closest.z = point.z;
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return lengthSquared(point - closest);
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}
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bool nv::overlap(const Box &box, const Sphere &sphere) {
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return distanceSquared(box, sphere.center) < sphere.radius * sphere.radius;
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}
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