Interface OBJ_Prism

Prism shape options object that extends OBJ_Generic3All and OBJ_FigurePrimitive

A prism base is defined in the XY plane, and it's length extends into +z. Use transform to orient it in any other way.

Triangles will be created for the ends if the base is convex. If the base is not convex, use baseTriangles to define the triangles.

base TypeParsablePoint[] — base border points defined in the XY plane - the points should be defined in the counter-clock-wise direction.
baseTriangles TypeParsablePoint[] — triangles in the XY plane that create the base fill. If the base is convex, then the triangles can be auto-generated and this property left undefined.
length number — length of the prism
lines boolean — if true then points representing the edges of the prism will be returned. If false, then points representing triangle faces and associated normals will be returned. (false)

See

To test examples, append them to the boilerplate

Example

// Create a rectangular prism
figure.add(
  {
    make: 'prism',
    base: [[0, 0], [0.5, 0], [0.5, 0.2], [0, 0.2]],
    color: [1, 0, 0, 1],
  },
);

Example

// Create a hexagonal prism along the x axis with lines
figure.add(
  {
    make: 'prism',
    base: Fig.polygon({ radius: 0.1, sides: 6 }),
    color: [1, 0, 0, 1],
    transform: ['r', Math.PI / 2, 0, 1, 0],
    lines: true,
  },
);

Example

// Create a bow tie prism defining the base triangles
figure.add(
  {
    make: 'prism',
    base: [[0, 0], [0.25, 0.1], [0.5, 0], [0.5, 0.3], [0.25, 0.2], [0, 0.3]],
    baseTriangles: [
      [0, 0], [0.25, 0.1], [0.25, 0.2],
      [0, 0], [0.25, 0.2], [0, 0.3],
      [0.25, 0.1], [0.5, 0], [0.5, 0.3],
      [0.25, 0.1], [0.5, 0.3], [0.25, 0.2],
    ],
    color: [1, 0, 0, 1],
    transform: ['r', Math.PI / 2, 0, 1, 0],
  },
);
@interface

Interface OBJ_Prism

See

Example

Example

Example

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