visual-c++ - OpenGL 3d 立体观看航空立体图像(左、右图像)

Question

我的目的: - 显示与整个左右卫星或航拍图像重叠的区域

        - rotate image using roll, pitch yaw angles
        -image format is Tiff image

现在我正在对航空立体图像(左、右立体对)进行 OpenGL 3d 立体观看。我使用以下代码显示了左右图像:

glDrawBuffer (GL_BACK_LEFT);
LeftBuf = new unsigned char [LeftCol * LeftRow *3];

for (int i = 0; i < LeftRow; i++){
    for (int j = 0; j< LeftCol; j++){

        LeftBuf [(i*LeftCol + j)*3] = tiff.LnBuf [i*LeftCol + LeftCol-(j-1)];
        LeftBuf [(i*LeftCol + j)*3+1] = tiff.LnBuf [i*LeftCol + LeftCol-(j-1)];
        LeftBuf [(i*LeftCol + j)*3+2] = tiff.LnBuf [i*LeftCol + LeftCol-(j-1)];

    }
}

glRasterPos2f(-1,-1);
glDrawPixels(LeftCol, LeftRow, GL_RGB, GL_UNSIGNED_BYTE, LeftBuf);

glDrawBuffer (GL_BACK_RIGHT);
RightBuf = new unsigned char [RightCol *RightRow *3];

for (int r = 0; r < RightRow; r++){
    for (int c = 0; c< RightCol; c++){

        RightBuf [(r*RightCol + c)*3] = tiff.RnBuf [r*RightCol + RightCol-(c-1)];
        RightBuf [(r*RightCol + c)*3+1] = tiff.RnBuf [r*RightCol + RightCol-(c-1)];
        RightBuf [(r*RightCol + c)*3+2] = tiff.RnBuf [r*RightCol + RightCol-(c-1)];

    }
}

glRasterPos2f(-1,-0.45);
glDrawPixels(RightCol, RightRow, GL_RGB, GL_UNSIGNED_BYTE, RightBuf);

现在我需要使用 Opengl 以下函数 3D 旋转我的右图像: glRotatef(rightphoto.omega*180/PI,1.0f,0.0f,0.0f); glRotatef(rightphoto.phi*180/PI,0.0f,1.0f,0.0f); glRotatef(rightphoto.kappa*180/PI,0.0f,0.0f,1.0f);但我无法旋转我的图像。

请帮我如何旋转我的图像!!!! 我还想通过 3D 旋转显示左右图像相同部分的左重叠整个图像。我不知道如何计算整个左右图像的重叠区域坐标。抱歉我的英语不好。

Answer 1

使用glDrawPixels()读取或写入的像素不会被模型 View 矩阵转换，这是glRotatef()所改变的。它们是像素，是比实际模型更底层的基元。

要解决此问题，请考虑使用例如绘制内容纹理映射基元，例如四边形。