ThreeJS 转向纹理

Question

我用画布创建了纹理，但我没有什么问题。我无法像图像中那样转动我的纹理。我该怎么做？

   setTexture = (name, font = 20) => {    

      const canvas = window.document.createElement("canvas");
      canvas.width = 256;
      canvas.height = 128;
      const ctx = canvas.getContext("2d");

      ctx.fillStyle = "white";
      ctx.fillRect(0, 0, canvas.width, canvas.height);
      ctx.font = `${font}pt Arial`;
      ctx.fillStyle = "black";
      ctx.textAlign = "center";
      ctx.textBaseline = "middle";
      ctx.fillText(
          name || "unnamed",
          canvas.width / 2,
          canvas.height / 2
      );

      const texture = new THREE.Texture(canvas);
      texture.wrapS = THREE.RepeatWrapping;
      texture.repeat.x = -1;
      texture.needsUpdate = true;
      return texture;
  };

Answer 1

如果要旋转纹理，可以更新几何体中的 UV，也可以使用 texture.rotation 修改器。

const texture = new THREE.Texture(canvas);
texture.rotation = Math.PI; // 180 deg in radians

如果旋转不是围绕您想要的点旋转，您可以将texture.center 设置为[0.0, 1.0] 范围内的另一个值。

const texture = new THREE.Texture(canvas);
texture.center = new THREE.Vector2(0.5, 0.7);
texture.rotation = Math.PI;