35 lines
833 B
C++
35 lines
833 B
C++
//
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// sphere.h
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// CubicVR2
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//
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// Created by Charles J. Cliffe on 2013-02-22.
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// Copyright (c) 2013 Charles J. Cliffe. All rights reserved.
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//
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#ifndef CubicVR2_sphere_h
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#define CubicVR2_sphere_h
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#include "vec3.h"
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#include "vec4.h"
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namespace CubicVR {
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struct sphere {
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bool intersects(vec4 sphere, vec4 other) {
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vec3 spherePos(sphere[0], sphere[1], sphere[2]);
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vec3 otherPos(other[0], other[1], other[2]);
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vec3 diff = vec3::subtract(spherePos, otherPos);
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__float mag = sqrtf(diff[0] * diff[0] + diff[1] * diff[1] + diff[2] * diff[2]);
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__float sum_radii = sphere[3] + other[3];
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if (mag * mag < sum_radii * sum_radii) {
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return true;
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}
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return false;
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}
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};
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}
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#endif
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