David Carlier
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
#pragma once
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#include "plane.h"
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#include "line3d.h"
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#include "aabbox.h"
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struct frustum {
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//Planes are: Near, Left, Right, Top, Bottom, Far
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planed planes[6];
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AABBoxd bound;
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frustum() {}
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frustum(const line3dd& topLeft, const line3dd& topRight, const line3dd& botLeft, const line3dd& botRight) {
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planes[0] = planed(topLeft.start, botLeft.start, topRight.start);
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planes[1] = planed(topLeft.start, topLeft.end, botLeft.start);
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planes[2] = planed(topRight.end, topRight.start, botRight.start);
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planes[3] = planed(topLeft.start, topRight.start, topRight.end);
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planes[4] = planed(botRight.start, botLeft.start, botRight.end);
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planes[5] = planed(topLeft.end, topRight.end, botLeft.end);
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bound.reset(topLeft);
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bound.addLine(topRight);
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bound.addLine(botLeft);
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bound.addLine(botRight);
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}
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void operator=(const frustum& other) {
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memcpy(reinterpret_cast<void *>(this), &other, sizeof(frustum));
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}
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bool overlaps(const vec3d& center, double radius) const {
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for(unsigned i = 0; i < 6; ++i)
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if(planes[i].distanceFromPlane(center) <= -radius)
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return false;
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return true;
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}
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};
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