Constructor
new Triplet(a, b, c)
Constructs a triplet (a, b, c) of points.
Parameters:
| Name | Type | Description |
|---|---|---|
a |
Point | |
b |
Point | |
c |
Point |
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Members
a
Returns the first point.
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b
Returns the second point.
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c
Returns the third point.
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Methods
copy() → {Triplet}
Returns a new triplet, copied of this.
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Returns:
- Type
- Triplet
crossProductMagnitude() → {number}
Returns the cross product of the vector ab and bc.
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Returns:
- Type
- number
isCollinear() → {boolean}
Returns true iff a, b and c are on the same line.
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Returns:
- Type
- boolean
isIn(p) → {boolean}
Returns true iff p is in the triangle formed by the triplet.
Cf. http://stackoverflow.com/a/2049593/1333666
Parameters:
| Name | Type | Description |
|---|---|---|
p |
Point |
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Returns:
- Type
- boolean
isLeft() → {boolean}
Returns true iff c is left to ab.
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Returns:
- Type
- boolean
isLeftOn() → {boolean}
Returns true iff c is left to ab or collinear.
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Returns:
- Type
- boolean
isRight() → {boolean}
Returns true iff c is right to ab.
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Returns:
- Type
- boolean
isRightOn() → {boolean}
Returns true iff c is right to ab or collinear.
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Returns:
- Type
- boolean
orientation() → {number}
Returns the orientation of the point c compared to ab.
If -1 then c is on the right,
else if 0 then c is on the same line that ab,
else if 1 then c is on the left.
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Returns:
-1, 0 or 1
- Type
- number
toString() → {String}
Returns a string representation of the triplet.
Each number is represented with at most precision figures after the decimal point.
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Returns:
- Type
- String