Edge
An edge between two material grid points.
Constructor Summary
| Public Constructor | ||
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constructor(a: Vector3, b: Vector3) Constructs a new edge. |
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Member Summary
| Public Members | ||
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a: Vector3 The starting point of the edge. |
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b: Vector3 The ending point of the edge. |
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coordinates: Vector3 The local grid coordinates of the starting point. |
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The index of the starting material grid point. |
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n: Vector3 The surface normal at the Zero Crossing position. |
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The Zero Crossing interpolation value. |
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Method Summary
| Public Methods | ||
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approximateZeroCrossing(sdf: SignedDistanceFunction, steps: Number) Approximates the smallest density along the edge. |
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computeSurfaceNormal(sdf: SignedDistanceFunction): Vector3 Computes the normal of the surface at the edge intersection. |
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computeZeroCrossingPosition(target: Vector3): Vector3 Calculates the Zero Crossing position. |
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Public Constructors
public constructor(a: Vector3, b: Vector3) source
Constructs a new edge.
Params:
| Name | Type | Attribute | Description |
| a | Vector3 |
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A starting point. If none is provided, a new vector will be created. |
| b | Vector3 |
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An ending point. If none is provided, a new vector will be created. |
Public Members
Public Methods
public approximateZeroCrossing(sdf: SignedDistanceFunction, steps: Number) source
Approximates the smallest density along the edge.
Params:
| Name | Type | Attribute | Description |
| sdf | SignedDistanceFunction | A density field. |
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| steps | Number |
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The maximum number of interpolation steps. Cannot be smaller than 2. |
public computeSurfaceNormal(sdf: SignedDistanceFunction): Vector3 source
Computes the normal of the surface at the edge intersection.
Params:
| Name | Type | Attribute | Description |
| sdf | SignedDistanceFunction | A density field. |
Return:
| Vector3 | The normal. |
TODO:
- Use analytical derivation instead of finite differences.
public computeZeroCrossingPosition(target: Vector3): Vector3 source
Calculates the Zero Crossing position.
Params:
| Name | Type | Attribute | Description |
| target | Vector3 | A target for the Zero Crossing position. If none is provided, a new vector will be created. |
Return:
| Vector3 | The Zero Crossing position. |