参考 faces

faces

An array that lists which of the geometry's vertices form each of its faces.

All 3D shapes are made by connecting sets of points called vertices. A geometry's surface is formed by connecting vertices to form triangles that are stitched together. Each triangular patch on the geometry's surface is called a face.

The geometry's vertices are stored as p5.Vector objects in the myGeometry.vertices array. The geometry's first vertex is the p5.Vector object at myGeometry.vertices[0], its second vertex is myGeometry.vertices[1], its third vertex is myGeometry.vertices[2], and so on.

For example, a geometry made from a rectangle has two faces because a rectangle is made by joining two triangles. myGeometry.faces for a rectangle would be the two-dimensional array [[0, 1, 2], [2, 1, 3]]. The first face, myGeometry.faces[0], is the array [0, 1, 2] because it's formed by connecting myGeometry.vertices[0], myGeometry.vertices[1],and myGeometry.vertices[2]. The second face, myGeometry.faces[1], is the array [2, 1, 3] because it's formed by connecting myGeometry.vertices[2], myGeometry.vertices[1],and myGeometry.vertices[3].

示例

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相关参考