Class CrossSectionEvaluate

Measuring Manifold cross-sections: area, emptiness, vertex and contour counts and the bounding rectangle. Nothing here changes the cross-section.

Index

Constructors

basic

area isEmpty numVert numContour bounds

Constructors

constructor

new CrossSectionEvaluate(): CrossSectionEvaluate
Returns CrossSectionEvaluate

basic

area

area(inputs: CrossSectionDto<CrossSectionPointer>): Promise<number>
Measures the area of a cross-section, in square model units, holes excluded.
Parameters
- inputs: CrossSectionDto<CrossSectionPointer>
  The cross-section
Returns Promise<number>
The area
Example
```
const area = await bitbybit.manifold.crossSection.evaluate.area({ crossSection: outline });
```
- Defined in bitbybit-docs.d.ts:37739

isEmpty

isEmpty(inputs: CrossSectionDto<CrossSectionPointer>): Promise<boolean>
Tells whether a cross-section has no contours at all.
Parameters
- inputs: CrossSectionDto<CrossSectionPointer>
  The cross-section
Returns Promise<boolean>
True when the cross-section is empty
Example
```
const empty = await bitbybit.manifold.crossSection.evaluate.isEmpty({ crossSection: outline });
```
- Defined in bitbybit-docs.d.ts:37752

numVert

numVert(inputs: CrossSectionDto<CrossSectionPointer>): Promise<number>
Counts the vertices of a cross-section over all its contours.
Parameters
- inputs: CrossSectionDto<CrossSectionPointer>
  The cross-section
Returns Promise<number>
The number of vertices
Example
```
const vertices = await bitbybit.manifold.crossSection.evaluate.numVert({ crossSection: outline });
```
- Defined in bitbybit-docs.d.ts:37765

numContour

numContour(inputs: CrossSectionDto<CrossSectionPointer>): Promise<number>
Counts the contours of a cross-section: its outer outlines and its holes.
Parameters
- inputs: CrossSectionDto<CrossSectionPointer>
  The cross-section
Returns Promise<number>
The number of contours
Example
```
const contours = await bitbybit.manifold.crossSection.evaluate.numContour({ crossSection: plate });
```
- Defined in bitbybit-docs.d.ts:37778

bounds

bounds(inputs: CrossSectionDto<CrossSectionPointer>): Promise<Vector2[]>
Finds the rectangle around a cross-section as two 2D points: the minimum corner, then the maximum corner.
Parameters
- inputs: CrossSectionDto<CrossSectionPointer>
  The cross-section
Returns Promise<Vector2[]>
The minimum corner and the maximum corner
Example
```
const [min, max] = await bitbybit.manifold.crossSection.evaluate.bounds({ crossSection: outline });
```
- Defined in bitbybit-docs.d.ts:37792