OGRE  1.9.0
OgreVolumeMeshBuilder.h
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1/*
2-----------------------------------------------------------------------------
3This source file is part of OGRE
4(Object-oriented Graphics Rendering Engine)
5For the latest info, see http://www.ogre3d.org/
6
7Copyright (c) 2000-2014 Torus Knot Software Ltd
8
9Permission is hereby granted, free of charge, to any person obtaining a copy
10of this software and associated documentation files (the "Software"), to deal
11in the Software without restriction, including without limitation the rights
12to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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14furnished to do so, subject to the following conditions:
15
16The above copyright notice and this permission notice shall be included in
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18
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26-----------------------------------------------------------------------------
27*/
28#ifndef __Ogre_Volume_MeshBuilder_H__
29#define __Ogre_Volume_MeshBuilder_H__
30
31#include <vector>
33#include "OgreManualObject.h"
34#include "OgreRenderOperation.h"
35#include "OgreVector3.h"
36#include "OgreAxisAlignedBox.h"
37#include "OgreSceneManager.h"
39
40namespace Ogre {
41namespace Volume {
42
46 {
49
52
55
58
61
64
71 Vertex(const Vector3 &v, const Vector3 &n) :
72 x(v.x), y(v.y), z(v.z),
73 nX(n.x), nY(n.y), nZ(n.z)
74 {
75 }
77 {
78 }
79 } Vertex;
80
87 bool _OgreVolumeExport operator==(Vertex const& a, Vertex const& b);
88
97 bool _OgreVolumeExport operator<(const Vertex& a, const Vertex& b);
98
102
106
111 {
112 public:
114
127 virtual void ready(const SimpleRenderable *simpleRenderable, const VecVertex &vertices, const VecIndices &indices, size_t level, int inProcess) = 0;
128 };
129
133 {
134 protected:
135
137 static const unsigned short MAIN_BINDING;
138
142
145
148
151
154
159 inline void addVertex(const Vertex &v)
160 {
161 size_t i = 0;
162 if (mIndexMap.find(v) == mIndexMap.end())
163 {
164 i = mVertices.size();
165 mIndexMap[v] = i;
166 mVertices.push_back(v);
167
168 // Update bounding box
169 if (!mBoxInit)
170 {
171 mBox.setExtents(v.x, v.y, v.z, v.x, v.y, v.z);
172 mBoxInit = true;
173 }
174 else
175 {
176 if (v.x < mBox.getMinimum().x)
177 {
178 mBox.setMinimumX(v.x);
179 }
180 if (v.y < mBox.getMinimum().y)
181 {
182 mBox.setMinimumY(v.y);
183 }
184 if (v.z < mBox.getMinimum().z)
185 {
186 mBox.setMinimumZ(v.z);
187 }
188 if (v.x > mBox.getMaximum().x)
189 {
190 mBox.setMaximumX(v.x);
191 }
192 if (v.y > mBox.getMaximum().y)
193 {
194 mBox.setMaximumY(v.y);
195 }
196 if (v.z > mBox.getMaximum().z)
197 {
198 mBox.setMaximumZ(v.z);
199 }
200 }
201 }
202 else
203 {
204 i = mIndexMap[v];
205 }
206 mIndices.push_back(i);
207 }
208
209 public:
210
238 static inline void addCubeToManualObject(
239 ManualObject *manual,
240 const Vector3 &c0,
241 const Vector3 &c1,
242 const Vector3 &c2,
243 const Vector3 &c3,
244 const Vector3 &c4,
245 const Vector3 &c5,
246 const Vector3 &c6,
247 const Vector3 &c7,
248 uint32 &baseIndex
249 )
250 {
251 manual->position(c0);
252 manual->position(c1);
253 manual->position(c2);
254 manual->position(c3);
255 manual->position(c4);
256 manual->position(c5);
257 manual->position(c6);
258 manual->position(c7);
259
260 manual->index(baseIndex + 0); manual->index(baseIndex + 1);
261 manual->index(baseIndex + 1); manual->index(baseIndex + 2);
262 manual->index(baseIndex + 2); manual->index(baseIndex + 3);
263 manual->index(baseIndex + 3); manual->index(baseIndex + 0);
264
265 manual->index(baseIndex + 4); manual->index(baseIndex + 5);
266 manual->index(baseIndex + 5); manual->index(baseIndex + 6);
267 manual->index(baseIndex + 6); manual->index(baseIndex + 7);
268 manual->index(baseIndex + 7); manual->index(baseIndex + 4);
269
270 manual->index(baseIndex + 0); manual->index(baseIndex + 4);
271 manual->index(baseIndex + 1); manual->index(baseIndex + 5);
272 manual->index(baseIndex + 2); manual->index(baseIndex + 6);
273 manual->index(baseIndex + 3); manual->index(baseIndex + 7);
274 baseIndex += 8;
275 }
276
280
295 inline void addTriangle(const Vector3 &v0, const Vector3 &n0, const Vector3 &v1, const Vector3 &n1, const Vector3 &v2, const Vector3 &n2)
296 {
297 addVertex(Vertex(v0, n0));
298 addVertex(Vertex(v1, n1));
299 addVertex(Vertex(v2, n2));
300 }
301
310
321 Entity* generateWithManualObject(SceneManager *sceneManager, const String &name, const String &material);
322
328
339 void executeCallback(MeshBuilderCallback *callback, const SimpleRenderable *simpleRenderable, size_t level, int inProcess) const;
340
341 };
342}
343}
344
345#endif
#define _OgreVolumeExport
Superclass for all objects that wish to use custom memory allocators when their new / delete operator...
A 3D box aligned with the x/y/z axes.
void setMaximumX(Real x)
Changes one of the components of the maximum corner of the box used to resize only one dimension of t...
void setMinimumX(Real x)
Changes one of the components of the minimum corner of the box used to resize only one dimension of t...
void setExtents(const Vector3 &min, const Vector3 &max)
Sets both minimum and maximum extents at once.
const Vector3 & getMaximum(void) const
Gets the maximum corner of the box.
const Vector3 & getMinimum(void) const
Gets the minimum corner of the box.
Defines an instance of a discrete, movable object based on a Mesh.
Definition OgreEntity.h:83
Class providing a much simplified interface to generating manual objects with custom geometry.
virtual void position(const Vector3 &pos)
Add a vertex position, starting a new vertex at the same time.
virtual void index(uint32 idx)
Add a vertex index to construct faces / lines / points via indexing rather than just by a simple list...
'New' rendering operation using vertex buffers.
Manages the organisation and rendering of a 'scene' i.e.
Simple implementation of MovableObject and Renderable for single-part custom objects.
Standard 3-dimensional vector.
Definition OgreVector3.h:52
Callback class when the user needs information about the triangles of chunks of a LOD level.
virtual void ready(const SimpleRenderable *simpleRenderable, const VecVertex &vertices, const VecIndices &indices, size_t level, int inProcess)=0
To be called with the callback function of a MeshBuilder.
Class to build up a mesh with vertices and indices.
void addVertex(const Vertex &v)
Adds a vertex to the data structure, reusing the index if it is already known.
void addTriangle(const Vector3 &v0, const Vector3 &n0, const Vector3 &v1, const Vector3 &n1, const Vector3 &v2, const Vector3 &n2)
Adds a triangle to the mesh with reusing already existent vertices via their index.
bool mBoxInit
Holds whether the initial bounding box has been set.
static const unsigned short MAIN_BINDING
The buffer binding.
MeshBuilder(void)
Constructor.
AxisAlignedBox getBoundingBox(void)
Gets the bounding box of the mesh.
AxisAlignedBox mBox
Holds the bounding box.
VecIndices mIndices
Holds the indices of the mesh.
map< Vertex, size_t >::type UMapVertexIndex
Map to get a vertex index.
Entity * generateWithManualObject(SceneManager *sceneManager, const String &name, const String &material)
Generates an entity via a ManualObject.
void executeCallback(MeshBuilderCallback *callback, const SimpleRenderable *simpleRenderable, size_t level, int inProcess) const
Executes a MeshBuilderCallback on this instance.
VecVertex mVertices
Holds the vertices of the mesh.
static void addCubeToManualObject(ManualObject *manual, const Vector3 &c0, const Vector3 &c1, const Vector3 &c2, const Vector3 &c3, const Vector3 &c4, const Vector3 &c5, const Vector3 &c6, const Vector3 &c7, uint32 &baseIndex)
Adds a cube to a manual object rendering lines.
size_t generateBuffers(RenderOperation &operation)
Generates the vertex- and indexbuffer of this mesh on the given RenderOperation.
vector< size_t >::type VecIndices
To hold indices.
bool _OgreVolumeExport operator<(const Vector3 &a, const Vector3 &b)
A less operator.
vector< Vertex >::type VecVertex
To hold vertices.
bool _OgreVolumeExport operator==(Vertex const &a, Vertex const &b)
== operator for two vertices.
float Real
Software floating point type.
unsigned int uint32
_StringBase String
Lightweight struct to represent a mesh vertex.
Real x
X coordinate of the position.
Vertex(const Vector3 &v, const Vector3 &n)
Convenience constructor.
Real nX
X component of the normal.
Real nY
Y component of the normal.
Real y
Y coordinate of the position.
Real z
Z coordinate of the position.
Real nZ
Z component of the normal.
std::map< K, V, P, A > type
std::vector< T, A > type