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add b3QHull object

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b3QHull allows users to create hull shapes from a list of points quickly. Example usage:

vec3* points = 0;
uint count = create_points(points);

b3QHull hull;
hull.Set(points, count);
This commit is contained in:
Irlan
2018-04-17 01:58:36 -03:00
parent 5e0a010881
commit 28367b8108
4 changed files with 485 additions and 3 deletions
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4
include/bounce/collision/shapes/hull.h
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@@ -44,7 +44,7 @@ struct b3Hull
u32 faceCount;
b3Face* faces;
b3Plane* planes;
const b3Vec3& GetVertex(u32 index) const;
const b3HalfEdge* GetEdge(u32 index) const;
const b3Face* GetFace(u32 index) const;
@@ -57,8 +57,6 @@ struct b3Hull
b3Plane GetEdgeSidePlane(u32 index) const;
u32 GetSize() const;
b3Vec3 GetCentroid() const;
void Validate() const;
void Validate(const b3Face* face) const;

44
include/bounce/collision/shapes/qhull.h Normal file
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@@ -0,0 +1,44 @@
/*
* Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#ifndef B3_Q_HULL_H
#define B3_Q_HULL_H
#include <bounce/collision/shapes/hull.h>
struct b3QHull : public b3Hull
{
b3QHull();
~b3QHull();
// Create a convex hull from a point list.
// If the point list defines a degenerate polyhedron
// the old hull is not cleared.
//
// Coincident points are removed.
// Coplanar faces are merged.
void Set(const b3Vec3* points, u32 count);
// Set this hull as a cylinder located at the origin.
void SetAsCylinder(float32 radius = 1.0f, float32 height = 1.0f);
// Set this hull as a cone located at the origin.
void SetAsCone(float32 radius = 1.0f, float32 height = 1.0f);
};
#endif