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IDP.Math.KGeomFace2d 接口

export interface KGeomFace2d

二维面的接口类

The interface of a geometry face 2d.

方法​

area​

area(): number;

获得面积。

Get area

返回值： number

返回face2d的面积。

Return the face2d's area.

containsPoint​

containsPoint(point: KPoint2d, bIncludeOn?: boolean): boolean;

判断输入点是否位于面上。

Whether the input point is in the face2d.

参数：

  • point: KPoint2d

    输入点。

    The input point.

  • bIncludeOn: boolean

    是否考虑边界, 默认不考虑。

    Whether to consider the case: input point is on the face2d's boundary. True means the point is on the boundary of the face2d is also be think in face2d. Default value is false.

返回值： boolean

返回输入点是否在面上。

Return true if the point is in face2d.

getContour​

getContour(): KGeomLoop2d;

获得外轮廓。

Get contour loop.

返回值： KGeomLoop2d

返回外轮廓。

Return the contour loop.

getHoles​

getHoles(): KGeomLoop2d[];

获得内轮廓。

Get hole loops

返回值： KGeomLoop2d[]

返回内轮廓。

Return the hole loops.

isPositive​

isPositive(): boolean;

检查外轮廓是否逆时针。

Check whether face2d's contour is counter-clockwise.

返回值： boolean

返回外轮廓的绕向是否为逆时针。

Return true if the the contour loop is counter-clockwise.

isValid​

isValid(): boolean;

检查该面是否有效，其中每一个内外轮廓均需都有效， 外轮廓包围所有内轮廓，所有内轮廓不相交。 外轮廓与内轮廓反向。

Whether the face2d is valid, including: - Each contour and hole is valid - Contour contains all holes and holes are not overlapped. - Contour and holes have opposite direction.

返回值： boolean

返回face2d是否有效。

Return true if the face2d is valid.