viewer.addSlave(camera.get())与viewer.SetCarmera(camera.get());区别?

oirrm

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

fenma3422

主摄影机和从摄影机的区别

oirrm

fenma3422 发表于 2014-8-23 09:33
主摄影机和从摄影机的区别

啊，主摄像机要怎么设置？？？ 为啥SetCarmera下，模型会拉长

RECT rect;
::GetWindowRect(hWnd, &rect);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
osg::ref_ptr<osg::Referenced> windata = new osgViewer::GraphicsWindowWin32::WindowData(hWnd);
traits->x = 0;
traits->y = 0;
traits->width = rect.right - rect.left;
traits->height = rect.bottom - rect.top;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->setInheritedWindowPixelFormat = true;
traits->inheritedWindowData = windata;
osg::GraphicsContext* gc = osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc);
camera->setViewport(new osg::Viewport(traits->x, traits->y, traits->width, traits->height));

double fovy, aspectRatio, zNear, zFar;
fovy = aspectRatio = zNear = zFar = 0.f;
m_viewer.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
camera->setProjectionMatrixAsPerspective(45,traits->width / traits->height,zNear, zFar);
m_viewer.SetCamera(camera.get());       

fenma3422

你参数设置不一样

oirrm

fenma3422 发表于 2014-8-25 16:43
你参数设置不一样

啊！没有呀。最后setcamera换成addslave就拉长了。一样的代码你加个水牛试试

fenma3422

addslave后，slave相机会从主相机中获取投影矩阵，这个主相机投影矩阵如果不对，slave肯定会拉长

oirrm

fenma3422 发表于 2014-8-26 17:26
addslave后，slave相机会从主相机中获取投影矩阵，这个主相机投影矩阵如果不对，slave肯定会拉长

setcamera之后就拉长了。addslave不会拉长的。

上面代码就会把水牛拉长。要怎么设置投影矩阵呀?
double fovy, aspectRatio, zNear, zFar;
fovy = aspectRatio = zNear = zFar = 0.f;
m_viewer.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
camera->setProjectionMatrixAsPerspective(45,traits->width / traits->height,zNear, zFar);

buaahc

投影矩阵要根据viewerport设置不然模型会变形，