Polygon2dExtensions
Static members
| Static member | Description |
ComputeArea(polygon)
Signature: polygon:Polygon2d -> float
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Computes the area of the polygon according to "Fast Polygon Area and Newell Normal Computation" journal of graphics tools, 7(2):9-13, 2002. The absolute value is returned (i.e. area >= 0.0). |
ComputeCentroid(polygon)
Signature: polygon:Polygon2d -> V2d
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The geometric center of the polygon. |
ComputeConvexHullIndexPolygon(polygon)
Signature: polygon:Polygon2d -> IndexPolygon2d
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Returns convex hull of this polygon. |
ComputeMinAreaEnclosingBoxRotation(...)
Signature: (polygon:Polygon2d * epsilon:float) -> M22d
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Returns the rotation of the supplied counter clockwise enumerated convex polygon that results in the minimum area enclosing box. If multiple rotations are within epsilon in their area, the one that is closest to an axis-aligned rotation (0, 90, 180, 270) is returned. O(n). |
ComputeOrientedBoundingBox(polygon)
Signature: polygon:Polygon2d -> Polygon2d
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Gets oriented bounding box of this polygon |
ComputePerimeter(polygon)
Signature: polygon:Polygon2d -> float
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ComputeSignedArea(polygon)
Signature: polygon:Polygon2d -> float
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Computes the area of the polygon according to "Fast Polygon Area and Newell Normal Computation" journal of graphics tools, 7(2):9-13, 2002 |
ComputeVertexCentroid(polygon)
Signature: polygon:Polygon2d -> V2d
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The vertex centroid is the average of the vertex coordinates. |
ComputeWindingNumber(polygon)
Signature: polygon:Polygon2d -> int
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Computes the winding number of the polyon. The winding number is positive for counter- clockwise polygons, negative for clockwise polygons. |
ConvexClipped(polygon, line, eps)
Signature: (polygon:Polygon2d * line:Plane2d * eps:float) -> Polygon2d
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Clip the supplied polygon at the supplied line. The method should work with all non-selfintersecting polygons. |
ConvexClipped(polygon, lines, eps)
Signature: (polygon:Polygon2d * lines:Plane2d [] * eps:float) -> Polygon2d
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Returns the convex polygon clipped by the set of lines (defined as Plane2ds). |
ConvexClipped(polygon, hull, eps)
Signature: (polygon:Polygon2d * hull:Hull2d * eps:float) -> Polygon2d
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Returns the polygon clipped by the hull, i.e. all parts of the polygon that are at the positive side of the hull lines. |
ConvexClipped(polygon, box, eps)
Signature: (polygon:Polygon2d * box:Box2d * eps:float) -> Polygon2d
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TODO summary. |
HasSelfIntersections(...)
Signature: (poly:Polygon2d * absoluteEpsilon:float) -> int
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Returns: 1 if the Polygon created by poly has no self-intersections 0 if one point of the polygon lies close to a line (absoluteEpsilon) -1 if the Polygon created by poly has a real self-intersection |
HasWinding(polygon, winding)
Signature: (polygon:Polygon2d * winding:Winding) -> bool
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Check if a polygon has a specified winding. |
IsCcw(polygon)
Signature: polygon:Polygon2d -> bool
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Returns true if polygon points are oriented in counter-clockwise order. |
IsConcave(polygon)
Signature: polygon:Polygon2d -> bool
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IsConvex(polygon)
Signature: polygon:Polygon2d -> bool
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IsFullyContainedInside(self, other)
Signature: (self:Polygon2d * other:Polygon2d) -> bool
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Returns true if the 'other' polygon is fully contained inside this polygon. |
MinDistanceTo(polygon, polygon1)
Signature: (polygon:Polygon2d * polygon1:Polygon2d) -> float
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Returns the minimal distance between the polygon and the other supplied polygon. O(n). |
MinDistanceTo(...)
Signature: (polygon:Polygon2d * polygon1:Polygon2d * pi0:byref<int> * pi1:byref<int> * lineOnThis:byref<bool>) -> float
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Returns the minimal distance between the polygon and the non- overlapping other supplied polygon. The minimal distance is always computed as the distance between a line segment and a point. The indices of the minimal distance configuration are returned in the out parameter, as the indices of points on the two polygons, and wether the line segement was on this or the other polygon. O(n). The returned index of the line segment is the lower point index (except in case of wraparound). |
RasterizeAsLabels(...)
Signature: (polygons:IEnumerable<Polygon2d> * resolution:V2i * bb:Box2d) -> Matrix<int>
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Rasterizes an array of polygons into a matrix of given size. First polygon is rasterized with label 1, second polygon with label 2, and so on. |
RasterizePolygon(...)
Signature: (polygon:Polygon2d * intoMatrix:Matrix<int> * value:int) -> unit
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Rasterizes this polygon into a given matrix using the given value (label). |
Scaled(polygon, scale)
Signature: (polygon:Polygon2d * scale:float) -> Polygon2d
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Scaled(polygon, center, scale)
Signature: (polygon:Polygon2d * center:V2d * scale:float) -> Polygon2d
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Scaled(polygon, scale)
Signature: (polygon:Polygon2d * scale:V2d) -> Polygon2d
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Scaled(polygon, center, scale)
Signature: (polygon:Polygon2d * center:V2d * scale:V2d) -> Polygon2d
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ScaledAboutVertexCentroid(...)
Signature: (polygon:Polygon2d * scale:float) -> Polygon2d
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ScaledAboutVertexCentroid(...)
Signature: (polygon:Polygon2d * scale:V2d) -> Polygon2d
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ToPolygon3d(polygon, point_copyFun)
Signature: (polygon:Polygon2d * point_copyFun:Func<V2d,V3d>) -> Polygon3d
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ToPolygon3d(...)
Signature: (polygon:Polygon2d * point_index_copyFun:Func<V2d,int,V3d>) -> Polygon3d
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Transformed(polygon, m)
Signature: (polygon:Polygon2d * m:M22d) -> Polygon2d
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Transformed(polygon, m)
Signature: (polygon:Polygon2d * m:M33d) -> Polygon2d
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WithoutMultiplePoints(polygon, eps)
Signature: (polygon:Polygon2d * eps:float) -> Polygon2d
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