osg将 void preMult( const Matrixd& );实现放在什么文件里了?

五十载

Matrixf.h、Matrixd.h、MatrixDecomposition.cpp、Matrix_implementation.cpp都没有呀。。。

buaahc

在Matrix_implementation.cpp好好找一下~

五十载

buaahc 发表于 2014-10-21 14:29
在Matrix_implementation.cpp好好找一下~

老师呀，我想对g_root节点进行矩阵旋转怎么做呢?

1. 
   
2. #include <osgViewer/Viewer>
   
3. #include <osgDB/ReadFile>
   
4. #include <osg/geode>
   
5. #include <osg/LineWidth>
   
6. #include <osgUtil/Tessellator>
   
7. #include <osg/Stencil>
   
8. #include <osg//ComputeBoundsVisitor>
   
9. #include <osgapex/cleardrawable>
   
10. #include <osg/Depth>
    
11. #include <osg/MatrixTransform>
    
12. 
    
13. #pragma comment(lib,"OpenThreadsd.lib")
    
14. #pragma comment(lib,"osgd.lib")
    
15. #pragma comment(lib,"osgDBd.lib")
    
16. #pragma comment(lib,"osgAPExd.lib")
    
17. #pragma comment(lib,"osgGAd.lib")
    
18. #pragma comment(lib,"osgUtild.lib")
    
19. #pragma comment(lib,"osgTextd.lib")
    
20. #pragma comment(lib,"osgSimd.lib")
    
21. #pragma comment(lib,"osgViewerd.lib")
    
22. 
    
23. int _tmain(int argc, _TCHAR* argv[])
    
24. {
    
25.         osg::ref_ptr<osgViewer::Viewer> viewer = new osgViewer::Viewer;
    
26.         osg::ref_ptr<osg::Group> g_Root = new osg::Group;
    
27.         osg::ref_ptr<osg::Node> pNode = osgDB::readNodeFile("cow.osg");
    
28.         osg::ref_ptr<osg::Node> pNode2 = osgDB::readNodeFile("cow.osg");
    
29.         osg::ref_ptr<osg::Node> pNode3 = osgDB::readNodeFile("cow.osg");
    
30.        
    
31.         osg::ref_ptr<osg::Group> g_depth = new osg::Group;
    
32.        
    
33.         osg::ref_ptr<osg::MatrixTransform> setMat = new osg::MatrixTransform;
    
34.         setMat->setMatrix(osg::Matrixd::scale(2,1,2));
    
35.         setMat->addChild(pNode);
    
36. 
    
37.         osg::ref_ptr<osg::MatrixTransform> setMat2 = new osg::MatrixTransform;
    
38.         setMat2->setMatrix(osg::Matrixd::translate(6,1,6));
    
39.         setMat2->addChild(pNode2);
    
40. 
    
41.         osg::ref_ptr<osg::MatrixTransform> setMat3 = new osg::MatrixTransform;
    
42.         setMat3->setMatrix(osg::Matrixd::translate(-6,1,-6));
    
43.         setMat3->addChild(pNode3);
    
44.         //g_Root->addChild(g_depth);
    
45.         g_Root->addChild(setMat);
    
46.         g_Root->addChild(setMat2);
    
47.         g_Root->addChild(setMat3);
    
48. 
    
49. 
    
50.         viewer->setSceneData(g_Root);
    
51.         viewer->run();
    
52.         return 0;
    
53. }
    
54. 
    

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buaahc

你再加一个矩阵作为g_Root的父节点啊。。。

五十载

buaahc 发表于 2014-10-24 00:31
你再加一个矩阵作为g_Root的父节点啊。。。

g_Root已经加到 viewer->setSceneData(g_Root);视图里了。将g_Root加到一个矩阵里，那矩阵类加到那里。。。

buaahc

:L:L

buaahc

请阅读基础教材 freesouth的一大堆书。。。

buaahc

buaahc 发表于 2014-10-24 22:34

mt-》addchild（g_Root）
viewer-》setscenedata（mt）。。。

五十载

buaahc 发表于 2014-10-24 22:36
mt-》addchild（g_Root）
viewer-》setscenedata（mt）。。。

老师呀。。。我的意思是viewer->setscenedata(g_Root)之后，怎么对g_Root进行矩阵变化? 重写osg::NodeVisitor类吗?

buaahc

给g_Root节点添加矩阵节点M，然后使用更新回调改变M

五十载

buaahc 发表于 2014-10-27 17:00
给g_Root节点添加矩阵节点M，然后使用更新回调改变M

老师呀。。。我要是。。。
std::Vector<osg::ref_ptf<osg::Node>> v；
osg::ref_ptf<osg::Node>  pNode = new osg::Node;
osg::ref_ptf<osg::Node>  pNode2 = new osg::Node;
v.push(pNode);
v.push(pNode2);
之后Vector里的pNode与pNode2会自动释放吗。。。还是怎么去释放呢。。。

五十载

buaahc 发表于 2014-10-24 22:34

老师呀 地形模型挖空一个长方形怎么不行呢。。。。

1. #include "stdafx.h"
   
2. #include <osg/Node>
   
3. #include <osg/Geometry>
   
4. #include <osg/Geode>
   
5. #include <osg/Notify>
   
6. #include <osg/MatrixTransform>
   
7. #include <osg/Texture2D>
   
8. #include <osg/BlendFunc>
   
9. #include <osg/Stencil>
   
10. #include <osg/ColorMask>
    
11. #include <osg/Depth>
    
12. #include <osg/ClipNode>
    
13. #include <osgDB/ReadFile>
    
14. #include <osgDB/WriteFile>
    
15. #include <osgUtil/Optimizer>
    
16. #include <osgViewer/Viewer>
    
17. #include <iostream>
    
18. #include <osgUtil/Tessellator>
    
19. #pragma comment(lib,"OpenThreadsd.lib")
    
20. #pragma comment(lib,"osgd.lib")
    
21. #pragma comment(lib,"osgDBd.lib")
    
22. #pragma comment(lib,"osgAPExd.lib")
    
23. #pragma comment(lib,"osgGAd.lib")
    
24. #pragma comment(lib,"osgUtild.lib")
    
25. #pragma comment(lib,"osgTextd.lib")
    
26. #pragma comment(lib,"osgSimd.lib")
    
27. #pragma comment(lib,"osgViewerd.lib")
    
28. 
    
29. 
    
30. osg::ref_ptr<osg::Geode> clipPlane = new osg::Geode;
    
31. osg::ref_ptr<osg::MatrixTransform> TransMt = new osg::MatrixTransform;
    
32. osg::ref_ptr<osg::Group> Group = new osg::Group;
    
33. osg::ref_ptr<osg::Group> Root = new osg::Group;
    
34. osg::Vec3  transPos;
    
35. osg::ref_ptr<osg::Vec3Array> m_VertexV3a = new osg::Vec3Array ;
    
36. 
    
37. void CreateGrooveUp(osg::ref_ptr<osg::Vec3Array> pts,osg::ref_ptr<osg::Node> pNode)
    
38. {
    
39. 
    
40.         osg::Vec3Array::iterator itr = pts->begin();
    
41.         transPos = (*itr);
    
42. 
    
43.         for(;itr!=pts->end();itr++ )
    
44.         {
    
45.                 (*itr) = (*itr) - transPos;
    
46.         }
    
47. 
    
48.         Group->addChild(TransMt);
    
49. 
    
50.         osg::Matrix mat;
    
51.         mat.setTrans(transPos);
    
52.         TransMt->setMatrix(mat);
    
53.         TransMt->addChild(clipPlane);
    
54. 
    
55.         osg::ref_ptr<osg::Geometry> top_cap = new osg::Geometry;
    
56.         clipPlane->addDrawable(top_cap);
    
57.         top_cap->setVertexArray(pts);
    
58. 
    
59.         osg::Vec4Array* colors = new osg::Vec4Array;
    
60.         colors->push_back(osg::Vec4(1,0,0,1));
    
61.         top_cap->setColorArray(colors);
    
62.         top_cap->setColorBinding(osg::Geometry::BIND_OVERALL);
    
63. 
    
64.         top_cap->addPrimitiveSet( new osg::DrawArrays(
    
65.                 osg::PrimitiveSet::LINE_LOOP,
    
66.                 0,pts->size()));
    
67. 
    
68.         osgUtil::Tessellator tess;
    
69.         tess.setTessellationType( osgUtil::Tessellator::TESS_TYPE_GEOMETRY );
    
70.         tess.setWindingType( osgUtil::Tessellator::TESS_WINDING_POSITIVE );
    
71.         tess.retessellatePolygons( *(top_cap.get()) );
    
72. 
    
73.         osg::Stencil* stencil = new osg::Stencil;
    
74.         stencil->setFunction(osg::Stencil::ALWAYS, 1, ~0u);
    
75.         stencil->setOperation(osg::Stencil::KEEP, osg::Stencil::KEEP, osg::Stencil::INCR);
    
76.         //int ref = stencil->getFunctionRef();
    
77.         //unsigned int mask = stencil->getFunctionMask();
    
78.         clipPlane->getOrCreateStateSet()->setAttributeAndModes(stencil, osg::StateAttribute::ON);
    
79.         clipPlane->getOrCreateStateSet()->setAttributeAndModes(new osg::Depth(osg::Depth::LESS, 0, 1, false), osg::StateAttribute::ON);
    
80.         clipPlane->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
    
81.         clipPlane->getOrCreateStateSet()->setAttributeAndModes(new osg::ColorMask(false, false, false, false));
    
82.         clipPlane->setCullingActive(false);
    
83.         clipPlane->getOrCreateStateSet()->setRenderBinDetails(-2, "RenderBin");
    
84. 
    
85. 
    
86.         osg::Geode* clearDepthNode = new osg::Geode;
    
87.         //clearDepthNode->addDrawable(GL_DEPTH_BUFFER_BIT);
    
88.         clearDepthNode->getOrCreateStateSet()->setRenderBinDetails(-1, "RenderBin");
    
89.         TransMt->addChild(clearDepthNode);
    
90.         stencil = new osg::Stencil;
    
91.         stencil->setFunction(osg::Stencil::NOTEQUAL, 1, 1);
    
92.         pNode->getOrCreateStateSet()->setAttributeAndModes(stencil, osg::StateAttribute::ON);       
    
93. }
    
94. 
    
95. 
    
96. 
    
97. 
    
98. 
    
99. int _tmain(int argc, _TCHAR* argv[])
    
100. {
     
101.         m_VertexV3a->push_back(osg::Vec3(-10,10,1));
     
102.         m_VertexV3a->push_back(osg::Vec3(10,10,1));
     
103.         m_VertexV3a->push_back(osg::Vec3(10,-10,1));
     
104.         m_VertexV3a->push_back(osg::Vec3(-10,-10,1));
     
105.         osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFile("subtile.ive");
     
106.         CreateGrooveUp(m_VertexV3a,loadedModel);
     
107.         Root->addChild(loadedModel);
     
108.         Root->addChild(Group);
     
109.         osgViewer::Viewer viewer;
     
110.         viewer.setUpViewInWindow(100,100,800,800);
     
111.         viewer.setSceneData(Root);
     
112.         //osg::DisplaySettings::instance()->setMinimumNumStencilBits(8);
     
113.         return viewer.run();
     
114.         return 0;
     
115. }
     
116. 
     

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