/usr/include/libwildmagic/Wm5MorphController.h is in libwildmagic-dev 5.13-1+b2.
This file is owned by root:root, with mode 0o644.
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// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/10/01)
#ifndef WM5MORPHCONTROLLER_H
#define WM5MORPHCONTROLLER_H
#include "Wm5GraphicsLIB.h"
#include "Wm5Controller.h"
#include "Wm5APoint.h"
namespace Wm5
{
class WM5_GRAPHICS_ITEM MorphController : public Controller
{
WM5_DECLARE_RTTI;
WM5_DECLARE_NAMES;
WM5_DECLARE_STREAM(MorphController);
public:
// Construction and destruction. The numbers of vertices, morph targets,
// and the keys are fixed for the lifetime of the object. The constructor
// does some of the work of creating the controller. The vertices per
// target, the times, and the weights must all be assigned by the
// appropriate member accessors.
//
// numVertices: The number of vertices per target. All targets have the
// same number of vertices.
//
// numTargets: The number of targets to morph.
//
// numKeys: The number of keys, each key occurring at a specific time.
//
MorphController (int numVertices, int numTargets, int numKeys);
virtual ~MorphController ();
// Member access. After calling the constructor, you must set the vertex
// arrays, times, and weights using these functions.
inline int GetNumVertices () const;
inline int GetNumTargets () const;
inline int GetNumKeys () const;
inline APoint* GetBaseVertices () const;
inline AVector* GetDeltaVertices (int target) const;
inline float* GetTimes () const;
inline float* GetWeights (int key) const;
// The animation update. The application time is in milliseconds.
virtual bool Update (double applicationTime);
protected:
// Lookup on bounding keys.
void GetKeyInfo (float ctrlTime, float& normTime, int& i0, int& i1);
// Target geometry. The number of vertices per target must match the
// number of vertices in the managed geometry object. The array of
// vertices at location 0 are those of one of the targets. Based on the
// comments about "Morph keys" (below), the array at location i >= 1 is
// computed as the difference between the i-th target and the 0-th target.
int mNumVertices;
int mNumTargets;
APoint** mVertices; // [numTargets][numVertices]
// Morph keys. The morphed object is a combination of N targets by
// weights w[0] through w[N-1] with w[i] in [0,1] and sum_i w[i] = 1.
// Each combination is sum_{i=0}^{N-1} w[i]*X[i] where X[i] is a vertex
// of the i-th target. This can be rewritten as a combination
// X[0] + sum_{i=0}^{N-2} w'[i] Y[i] where w'[i] = w[i+1] and
// Y[i] = X[i+1] - X[0]. The weights stored in this class are the
// w'[i] (to reduce storage). This also reduces computation time by a
// small amount (coefficient of X[0] is 1, so no multiplication must
// occur).
int mNumKeys;
float* mTimes; // [numKeys]
float** mWeights; // [numKeys][numTargets-1]
// For O(1) lookup on bounding keys.
int mLastIndex;
};
WM5_REGISTER_STREAM(MorphController);
typedef Pointer0<MorphController> MorphControllerPtr;
#include "Wm5MorphController.inl"
}
#endif
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