Justin Marshall
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
#pragma once
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#include "bounds.h"
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#include <cmath>
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class idBox {
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public:
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idVec3 center;
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idVec3 extents;
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idMat3 axis;
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idBox() : center(0.0f, 0.0f, 0.0f), extents(0.0f, 0.0f, 0.0f), axis(1.0f) {}
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explicit idBox(const idBounds& bounds) : axis(1.0f) {
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SetFromBounds(bounds);
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}
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idBox(const idBounds& bounds, const idVec3& origin, const idMat3& newAxis)
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: axis(newAxis) {
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SetFromBounds(bounds);
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const idVec3 localCenter = center;
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center.Set(
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origin.x + newAxis[0].x * localCenter.x
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+ newAxis[1].x * localCenter.y + newAxis[2].x * localCenter.z,
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origin.y + newAxis[0].y * localCenter.x
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+ newAxis[1].y * localCenter.y + newAxis[2].y * localCenter.z,
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origin.z + newAxis[0].z * localCenter.x
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+ newAxis[1].z * localCenter.y + newAxis[2].z * localCenter.z);
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}
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bool ContainsPoint(const idVec3& point) const {
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const idVec3 relative = point - center;
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return std::fabs(axis[0].Dot(relative)) <= extents.x
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&& std::fabs(axis[1].Dot(relative)) <= extents.y
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&& std::fabs(axis[2].Dot(relative)) <= extents.z;
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}
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void AxisProjection(const idMat3& projectionAxis, idBounds& bounds) const {
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for (int index = 0; index < 3; ++index) {
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const float projectedCenter = projectionAxis[index].Dot(center);
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const float projectedRadius =
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std::fabs(projectionAxis[index].Dot(axis[0])) * extents.x
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+ std::fabs(projectionAxis[index].Dot(axis[1])) * extents.y
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+ std::fabs(projectionAxis[index].Dot(axis[2])) * extents.z;
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bounds[0][index] = projectedCenter - projectedRadius;
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bounds[1][index] = projectedCenter + projectedRadius;
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}
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}
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private:
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void SetFromBounds(const idBounds& bounds) {
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center = (bounds[0] + bounds[1]) * 0.5f;
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extents = bounds[1] - center;
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}
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};
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struct box {
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int c0min;
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int c0max;
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int c1min;
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int c1max;
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int c2min;
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int c2max;
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int volume;
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int colorcount;
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};
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static_assert(sizeof(idBox) == 60, "Recovered idBox ABI changed");
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