So, OK, so apart from that, I claim now we can find the position of its moving point Q0Q1 because, well, this vector, Q0Q1 we can find from the coordinates of Q0 and Q1.
不管那些了，我断言我们可以找出移动点的位置了,因为对于向量1,我们可以找出Q0和Q1的坐标。
2
By moving the texture coordinates in one direction, the smoke is made to look like it is moving in the opposite direction.
通过向一个方向移动纹理坐标，烟雾就看起来向相反的方向移动。
3
Although the particles are animating (moving away from the source), added detail is gained by animating the texture coordinates used to calculate the lookup in the the noise volume texture.