Question

我基本上想要将以下代码片段（Y轴向上）复制到libgdx：

let archer = Vector3d(1.0,0.0,1.0)
let target = Vector3d(4.0,0.0,5.0)
let travel = target - archer
let transform = Matrix4d.CreateTranslation(-archer) *
                Matrix4d.CreateRotationY(Math.Atan2(travel.Z,travel.X)) 
Vector3d.Transform(archer, transform) // transforms archer to (0,0,0)
Vector3d.Transform(target, transform) // transforms target to (5,0,0)

源： https://gamedev.stackexchange.com/questions/33901/how-to-make-an-arrow-land-at-a-specific-position-in-3d-world-space

这是我的方法（Z轴向上）：

archer = new Vector3(1,1,0);        
target = new Vector3(4,5,0);        
Vector3 travel = new Vector3(target).sub(new Vector3(archer));
float degree = (float) Math.toDegrees(Math.atan2(travel.y, travel.x));
Matrix4 transform = new Matrix4().setToTranslation(new Vector3(archer).mul(-1));
transform.mul(new Matrix4().rotate(0, 0, 1, degree));//in my case Z-Axis is up !    
archer.mul(transform); //-1.2,0.39999998,0  should be: 0,0,0
target.mul(transform); //-2.6000001,5.2,0.0 should be: 5,0,0

我收到错误的结果，我找不到我的错误，但我想这与第6行的旋转部分有关

Answer 1

我想它应该是

archer = new Vector3(1,0,1);        
target = new Vector3(4,0,5);

Libgdx：围绕z轴旋转（矩阵变换）

1 个答案: