new Cesium.PolylineColorAppearance(options)

An appearance for GeometryInstance instances with color attributes and PolylineGeometry or GroundPolylineGeometry. 这样可以让数个几何图形实例,每个实例都有不同的颜色 be drawn with the same Primitive.
Name Type Description
options object optional 下列属性的对象 :
Name Type Default Description
translucent boolean true optional When true, the geometry is expected to appear translucent so PolylineColorAppearance#renderState has alpha blending enabled.
vertexShaderSource string optional 可选 NT 0 顶点阴影源,以覆盖默认顶点阴影源.
fragmentShaderSource string optional 可选的 NT 0 碎片遮蔽源以覆盖默认的碎片遮蔽源 .
renderState object optional 可选的渲染状态来推翻默认渲染状态 .
Example:
// A solid white line segment
const primitive = new Cesium.Primitive({
  geometryInstances : new Cesium.GeometryInstance({
    geometry : new Cesium.PolylineGeometry({
      positions : Cesium.Cartesian3.fromDegreesArray([
        0.0, 0.0,
        5.0, 0.0
      ]),
      width : 10.0,
      vertexFormat : Cesium.PolylineColorAppearance.VERTEX_FORMAT
    }),
    attributes : {
      color : Cesium.ColorGeometryInstanceAttribute.fromColor(new Cesium.Color(1.0, 1.0, 1.0, 1.0))
    }
  }),
  appearance : new Cesium.PolylineColorAppearance({
    translucent : false
  })
});

Members

static constant Cesium.PolylineColorAppearance.VERTEX_FORMAT : VertexFormat

The VertexFormat that all PolylineColorAppearance instances 兼容。 这只需要 NT 0 位置 NT 1 属性.

readonly closed : boolean

当 NT 0 真 NT 1 时,几何会关闭如此 PolylineColorAppearance#renderState has backface culling enabled. 这始终是 NT 0 false NT 1 ,用于 NT 2 Polyline ColorAppearance NT 3 .
Default Value: false

readonly fragmentShaderSource : string

The GLSL source code for the fragment shader.

material : Material

This property is part of the Appearance interface, but is not 由于使用了完全自定义的片段遮蔽器,故由 PolylineColorAppearance 使用.
Default Value: undefined

readonly renderState : object

The WebGL fixed-function state to use when rendering the geometry.

The render state can be explicitly defined when constructing a PolylineColorAppearance instance, or it is set implicitly via PolylineColorAppearance#translucent.

translucent : boolean

当 NT 0 real NT 1 时,几何会显得半透明,所以 PolylineColorAppearance#renderState 已启用α混合.
Default Value: true

readonly vertexFormat : VertexFormat

The VertexFormat that this appearance instance is compatible with. 几何可以有更多的顶点属性,并且仍然是兼容的 - 在 潜在性能成本 但它不能少.
Default Value: PolylineColorAppearance.VERTEX_FORMAT

readonly vertexShaderSource : string

顶点遮蔽器的 GLSL 源代码.

Methods

getFragmentShaderSource()string

在程序上创建完整的 NT 0 碎片遮蔽源.
Returns:
The full GLSL fragment shader source.

getRenderState()object

创建渲染状态。 这不是最终的州法院;相反, 它可以包含一个子集,与渲染状态相同的渲染状态属性 在上下文中创建.
Returns:
铸造状态.

isTranslucent()boolean

确定以 PolylineColorAppearance#translucent 为基础的几何是否半透明.
Returns:
如果外观为半透明,则使用# .
Need help? The fastest way to get answers is from the community and team on the Cesium Forum.