93 lines
2.0 KiB
C++
93 lines
2.0 KiB
C++
/**
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@file Cylinder.h
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@maintainer Morgan McGuire, http://graphics.cs.williams.edu
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@created 2003-02-07
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@edited 2005-09-26
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Copyright 2000-2005, Morgan McGuire.
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All rights reserved.
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*/
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#ifndef G3D_Cylinder_H
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#define G3D_Cylinder_H
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#include "G3D/platform.h"
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#include "G3D/g3dmath.h"
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#include "G3D/Vector3.h"
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namespace G3D {
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class Line;
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class AABox;
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/**
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Right cylinder
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*/
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class Cylinder {
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private:
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Vector3 p1;
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Vector3 p2;
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float mRadius;
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public:
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/** Uninitialized */
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Cylinder();
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Cylinder(class BinaryInput& b);
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Cylinder(const Vector3& _p1, const Vector3& _p2, float _r);
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void serialize(class BinaryOutput& b) const;
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void deserialize(class BinaryInput& b);
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/** The line down the center of the Cylinder */
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Line axis() const;
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/**
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A reference frame in which the center of mass is at the origin and
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the Y-axis is the cylinder's axis. If the cylinder is transformed, this reference frame
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may freely rotate around its axis.*/
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void getReferenceFrame(class CoordinateFrame& cframe) const;
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/** Returns point 0 or 1 */
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inline const Vector3& point(int i) const {
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debugAssert(i >= 0 && i <= 1);
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return (i == 0) ? p1 : p2;
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}
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/**
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Returns true if the point is inside the Cylinder or on its surface.
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*/
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bool contains(const Vector3& p) const;
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float area() const;
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float volume() const;
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float radius() const;
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/** Center of mass */
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inline Vector3 center() const {
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return (p1 + p2) / 2.0f;
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}
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inline float height() const {
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return (p1 - p2).magnitude();
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}
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/**
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Get close axis aligned bounding box.
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With vertical world orientation, the top and bottom might not be very tight. */
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void getBounds(AABox& out) const;
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/** Random world space point with outward facing normal. */
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void getRandomSurfacePoint(Vector3& P, Vector3& N) const;
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/** Point selected uniformly at random over the volume. */
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Vector3 randomInteriorPoint() const;
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};
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} // namespace
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#endif
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