Guan Lian

When using the transform to move the camera, the method mentioned above becomes ineffective. I used the 'wrangle' with the help of ChatGPT, and the following is the code：


matrix cameraTransform = usd_worldtransform(0,"/cameras/camera1");
matrix targetTransform = usd_worldtransform(1,"/pig/target_FD");


vector4 cameraPosHomogeneous = set(0, 0, 0, 1);
vector4 targetPosHomogeneous = set(0, 0, 0, 1);
cameraPosHomogeneous = cameraTransform * cameraPosHomogeneous;
targetPosHomogeneous = targetTransform * targetPosHomogeneous;
vector cameraPos = set(cameraPosHomogeneous, cameraPosHomogeneous, cameraPosHomogeneous);
vector targetPos = set(targetPosHomogeneous, targetPosHomogeneous, targetPosHomogeneous);



float distance = distance(cameraPos, targetPos);


usd_setattrib(0,"/cameras/camera1", "focusDistance", distance);