python gluLookAt 用于第一人称相机

Question

我是 openGL 的新手，我正在尝试将相机移动为第一人称射击游戏。我想使用 gluLookAt 进行移动和环视场景，但我无法弄清楚相机部分

gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glLoadIdentity()
glu.gluLookAt(current_player.position[0], current_player.position[1] ,
              current_player.position[2], look_at_position[0], look_at_position[1], 0,
              0, 1 ,0)

look_at_position 是鼠标位置，但我无法计算最后一个值，所以我暂时设为 0

我只想知道如何使用 glLookAt 移动播放器和相机。

Answer 1

与 glm::lookAt() 工作方式相同。第一个参数是您正在查看的位置（您是正确的），然后是您正在查看的位置，然后是向上向量（也是正确的）。这是我调用的：

//this code is in the mouse callback, both yaw and pitch are mouse inputs
glm::vec3 front;
glm::vec3 right;
front.x = cos(glm::radians(yaw)) * cos(glm::radians(pitch));
front.y = sin(glm::radians(pitch));
front.z = sin(glm::radians(yaw)) * cos(glm::radians(pitch));
cameraFront = glm::normalize(front);
front.x = cos(glm::radians(yaw));
front.z = sin(glm::radians(yaw));
movementFront = glm::normalize(front);

//this is in int main()
view = glm::lookAt(cameraPos, cameraPos + cameraFront, cameraUp);