瑞模网 Cesium 渐变色 柱子

    // 自定义顶点着色器和片源着色器
      let appearance = new Cesium.MaterialAppearance({
    vertexShaderSource: `
                attribute vec3 position3DHigh;  
                attribute vec3 position3DLow;
                attribute float batchId;
                varying vec4 v_positionEC;
     
                attribute vec4 color;
                varying vec4 v_color;
     
                void main()
                {
                    v_color = color;
                    vec4 p = czm_co