KBE3D / KBCore / Cesium / Intersections2D / computeBarycentricCoordinates

函数: computeBarycentricCoordinates()

computeBarycentricCoordinates(x: number, y: number, x1: number, y1: number, x2: number, y2: number, x3: number, y3: number, result?: Cartesian3): Cartesian3

Compute the barycentric coordinates of a 2D position within a 2D triangle.

参数

x

number

The x coordinate of the position for which to find the barycentric coordinates.

y

number

The y coordinate of the position for which to find the barycentric coordinates.

x1

number

The x coordinate of the triangle's first vertex.

y1

number

The y coordinate of the triangle's first vertex.

x2

number

The x coordinate of the triangle's second vertex.

y2

number

The y coordinate of the triangle's second vertex.

x3

number

The x coordinate of the triangle's third vertex.

y3

number

The y coordinate of the triangle's third vertex.

result?

Cartesian3

The instance into to which to copy the result. If this parameter is undefined, a new instance is created and returned.

返回

Cartesian3

The barycentric coordinates of the position within the triangle.

示例

const result = Cesium.Intersections2D.computeBarycentricCoordinates(0.0, 0.0, 0.0, 1.0, -1, -0.5, 1, -0.5);
// result === new Cesium.Cartesian3(1.0 / 3.0, 1.0 / 3.0, 1.0 / 3.0);