Class CrossSectionTransforms

Moving, turning, scaling, mirroring and warping Manifold cross-sections in the XY plane. Angles are in degrees and rotations turn about the origin; every method returns a new cross-section.

Index

Constructors

constructor

new CrossSectionTransforms(): CrossSectionTransforms
Returns CrossSectionTransforms

matrix

transform

transform(
inputs: TransformCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Applies a 3x3 matrix to a cross-section, for any combination of move, turn, scale and shear in the plane.
Parameters
- inputs: TransformCrossSectionDto<CrossSectionPointer>
  The cross-section and the 3x3 matrix
Returns Promise<CrossSectionPointer>
The transformed cross-section
Example
```
const moved = await bitbybit.manifold.crossSection.transforms.transform({ crossSection: square, transform: matrix });
```
- Defined in bitbybit-docs.d.ts:38080

transforms

scale2D

scale2D(
inputs: Scale2DCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Scales a cross-section by a separate factor along X and Y, about the origin.
Parameters
- inputs: Scale2DCrossSectionDto<CrossSectionPointer>
  The cross-section and the two factors
Returns Promise<CrossSectionPointer>
The scaled cross-section
Example
```
const stretched = await bitbybit.manifold.crossSection.transforms.scale2D({ crossSection: square, vector: [2, 1] });
```
- Defined in bitbybit-docs.d.ts:38000

scale

scale(
inputs: ScaleCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Scales a cross-section uniformly about the origin by a factor.
Parameters
- inputs: ScaleCrossSectionDto<CrossSectionPointer>
  The cross-section and the factor
Returns Promise<CrossSectionPointer>
The scaled cross-section
Example
```
const bigger = await bitbybit.manifold.crossSection.transforms.scale({ crossSection: square, factor: 2 });
```
- Defined in bitbybit-docs.d.ts:38013

mirror

mirror(
inputs: MirrorCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Mirrors a cross-section across the line through the origin that is perpendicular to the given normal.
Parameters
- inputs: MirrorCrossSectionDto<CrossSectionPointer>
  The cross-section and the normal of the mirror line
Returns Promise<CrossSectionPointer>
The mirrored cross-section
Example
```
const other = await bitbybit.manifold.crossSection.transforms.mirror({ crossSection: outline, normal: [1, 0] });
```
- Defined in bitbybit-docs.d.ts:38027

translate

translate(
inputs: TranslateCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Moves a cross-section by a 2D vector, in model units.
Parameters
- inputs: TranslateCrossSectionDto<CrossSectionPointer>
  The cross-section and the vector to move it by
Returns Promise<CrossSectionPointer>
The moved cross-section
Example
```
const moved = await bitbybit.manifold.crossSection.transforms.translate({ crossSection: square, vector: [10, 0] });
```
- Defined in bitbybit-docs.d.ts:38040

translateXY

translateXY(
inputs: TranslateXYCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Moves a cross-section by separate distances along X and Y, in model units.
Parameters
- inputs: TranslateXYCrossSectionDto<CrossSectionPointer>
  The cross-section and the two distances
Returns Promise<CrossSectionPointer>
The moved cross-section
Example
```
const moved = await bitbybit.manifold.crossSection.transforms.translateXY({ crossSection: square, x: 10, y: 5 });
```
- Defined in bitbybit-docs.d.ts:38053

rotate

rotate(
inputs: RotateCrossSectionDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Rotates a cross-section about the origin by an angle in degrees, counterclockwise.
Parameters
- inputs: RotateCrossSectionDto<CrossSectionPointer>
  The cross-section and the angle in degrees
Returns Promise<CrossSectionPointer>
The rotated cross-section
Example
```
const turned = await bitbybit.manifold.crossSection.transforms.rotate({ crossSection: square, degrees: 45 });
```
- Defined in bitbybit-docs.d.ts:38066

warp

warp(
inputs: CrossSectionWarpDto<CrossSectionPointer>,
): Promise<CrossSectionPointer>
Moves every point of a cross-section with a function of your own that changes the point in place, then fuses the result so any crossings the move introduced are cleaned up.
Parameters
- inputs: CrossSectionWarpDto<CrossSectionPointer>
  The cross-section and the function that moves each point
Returns Promise<CrossSectionPointer>
The warped cross-section
Example
```
const wavy = await bitbybit.manifold.crossSection.transforms.warp({
    crossSection: square,
    warpFunc: (vert) => { vert[1] += Math.sin(vert[0]) * 0.5; },
});
```
- Defined in bitbybit-docs.d.ts:38097

Class CrossSectionTransforms

Index

Constructors

matrix

transforms

Constructors

constructor

Returns CrossSectionTransforms

matrix

transform

Parameters

Returns Promise<CrossSectionPointer>

Example

transforms

scale2D

Parameters

Returns Promise<CrossSectionPointer>

Example

scale

Parameters

Returns Promise<CrossSectionPointer>

Example

mirror

Parameters

Returns Promise<CrossSectionPointer>

Example

translate

Parameters

Returns Promise<CrossSectionPointer>

Example

translateXY

Parameters

Returns Promise<CrossSectionPointer>

Example

rotate

Parameters

Returns Promise<CrossSectionPointer>

Example

warp

Parameters

Returns Promise<CrossSectionPointer>

Example

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