osg--相机

坐标

Vs = V * modelViewMatrix * projectionMatrix * windowMatrix

• V * modelViewMatrix * projectionMatrix为左手系，各分量在-1到1

unproject

• V0 = (Xs, Ys, 0) * invMVPW
• V1 = (Xs, Ys, 1) * invMVPW

相机

• osg::Camera 是group节点

  • 功能

    • 管理坐标

      • setViewMatrix

      • setViewMatrixAsLookAt

      • setProjectionMatrix

      • setProjectionMatrixAsFrustum

      • setProjectionMatrixAsOrtho

      • setProjectionMatrixAsOrtho2D

      • setProjectionMatrixAsPerspective

      • setViewport 参数为osg::Viewport

      • get*()

          osg::Matrix viewMatrix = camera->getViewMatrix();
          osg::Vec3 eye, center, up
          camera->getViewMatrixAsLookAt( eye, center, up );
        

    • 封装opengl函数
      • setClearMask 参数为GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT
      • se

来源：CSDN

作者：qq_33638017

链接：https://blog.csdn.net/qq_33638017/article/details/103629309