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deps/g3dlite/include/G3D/Cylinder.h

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