1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
// Geometric Tools, LLC
// 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 WM5TUBESURFACE_H
#define WM5TUBESURFACE_H
#include "Wm5GraphicsLIB.h"
#include "Wm5Curve3.h"
#include "Wm5TriMesh.h"
namespace Wm5
{
class WM5_GRAPHICS_ITEM TubeSurface : public TriMesh
{
WM5_DECLARE_RTTI;
WM5_DECLARE_NAMES;
WM5_DECLARE_STREAM(TubeSurface);
public:
typedef float (*RadialFunction)(float);
// Construction and destruction. TubeSurface accepts responsibility
// for deleting the input curve. If upVector is not the zero vector,
// it will be used as 'up' in the frame calculations. If it is the zero
// vector, the Frenet frame will be used. If bWantColors is 'true',
// the vertex colors are allocated and set to black. The application
// needs to assign colors as needed. If either of tcoordMin or tcoordMax is
// not null, both must be not null. In this case, texture coordinates are
// generated for the surface.
TubeSurface (Curve3f* medial, RadialFunction radial, bool closed,
const Vector3f& upVector, int numMedialSamples, int mNumSliceSamples,
bool sampleByArcLength, bool insideView, const Float2* tcoordMin,
const Float2* tcoordMax, VertexFormat* vformat);
virtual ~TubeSurface ();
// Member access.
inline void SetMedial (Curve3f* medial);
inline const Curve3f* GetMedial () const;
inline void SetRadial (RadialFunction radial);
inline RadialFunction GetRadial () const;
inline void SetUpVector (const Vector3f& upVector);
inline const Vector3f& GetUpVector () const;
inline int GetNumMedialSamples () const;
inline int GetNumSliceSamples () const;
// Generate vertices for the end slices. These are useful when you build
// an open tube and want to attach meshes at the ends to close the tube.
// The input array must have size (at least) S+1 where S is the number
// returned by GetSliceSamples. Function GetTMinSlice is used to access
// the slice corresponding to the medial curve evaluated at its domain
// minimum, tmin. Function GetTMaxSlice accesses the slice for the
// domain maximum, tmax. If the curve is closed, the slices are the same.
void GetTMinSlice (Vector3f* slice);
void GetTMaxSlice (Vector3f* slice);
// If the medial curve is modified, for example if it is control point
// based and the control points are modified, then you should call this
// update function to recompute the tube surface geometry.
void UpdateSurface ();
protected:
// Tessellation support.
int Index (int s, int m);
void ComputeSinCos ();
void ComputeVertices ();
void ComputeNormals ();
void ComputeUVs (const Float2& tcoordMin, const Float2& tcoordMax);
void ComputeIndices (bool insideView);
Curve3f* mMedial;
RadialFunction mRadial;
int mNumMedialSamples, mNumSliceSamples;
Vector3f mUpVector;
float* mSin;
float* mCos;
bool mClosed, mSampleByArcLength;
};
WM5_REGISTER_STREAM(TubeSurface);
typedef Pointer0<TubeSurface> TubeSurfacePtr;
#include "Wm5TubeSurface.inl"
}
#endif
|
