pyrw.RWessentials module

pyrw.RWessentials.angle_from_vertices(vcenter, vstart, vend, samedist=False)

Returns angle between two vertices around vcenter.

Parameters:
  • vcenter (pyrw.geometry.vertex) – Vertex object.
  • vstart (pyrw.geometry.vertex) – Vertex object.
  • vend (pyrw.geometry.vertex) – Vertex object.
  • samedist (bool) – Flag if vectors need to have same length.
Returns:

float – angle
pyrw.RWessentials.checkInsideCircle(x, center, radius, tol=1e-30, debug=False)

Returns True if x is inside circle.

Parameters:
  • x (array) – Coordinate.
  • center (float) – Coordinate of center.
  • radius (float) – Radius of circle.
  • center – Tolerance added to check to avoid rounding errors.
  • debug (bool) – Debugging flag.
Returns:

bool – True if inside
pyrw.RWessentials.checkInsidePoly(coord, poly)

Returns True if coord is inside poly.

Taken from http://www.ariel.com.au/a/python-point-int-poly.html

Parameters:
  • coord (array) – Coordinate.
  • poly (list) – Polygon corners.
Returns:

bool – True if inside
pyrw.RWessentials.combinations(arrays, out=None)

Returns cartesian product of arrays.

Parameters:
  • arrays (list) – List of arrays.
  • out (array) – Result vector.
Returns:

array – Cartesian product
pyrw.RWessentials.compute_angle(vec1, vec2)

Returns angle between two vectors.

Parameters:
  • vec1 (array) – Vector.
  • vec2 (array) – Vector.
Returns:

float – angle
pyrw.RWessentials.create_arc_curve(vcenter, angle, angle_offset, radius, steps=100)

Creates array with points describing the curve of an arc.

Parameters:
  • vcenter (pyrw.geometry.vertex) – Vertex object.
  • angle (float) – Angle of arc.
  • angle_offset (float) – Offset angle of arc.
  • radius (float) – radius of arc.
  • steps (int) – number of steps for arc.
Returns:

(array,array) – vectors describing x/y-coordinates
pyrw.RWessentials.cross2d(x1, x2)

Returns reduced 2D cross product.

Parameters:
  • x1 (array) – Coordinate 1.
  • x2 (array) – Coordinate 2.
Returns:

float – cross product
pyrw.RWessentials.direc_angle(v1, v2)

Returns directional angle.

Parameters:
  • v1 (array) – Vector.
  • v2 (array) – Vector.
Returns:

array – directional angle
pyrw.RWessentials.dist(p1, p2)

Returns euclidean distance between two points.

Parameters:
  • p1 (array) – Point 1.
  • p2 (array) – Point 2.
Returns:

float – distance
pyrw.RWessentials.norm(vec)

Returns L2-norm of vector.

Parameters:vec (array) – Vector.
Returns:float – length of vector
pyrw.RWessentials.outwPerp(x, c)

Returns outward perpendicular vector.

Parameters:
  • x (array) – Vector.
  • c (array) – Center coordinate.
Returns:

array – perpendicular vector
pyrw.RWessentials.perp(x)

Returns perpendicular vector.

Parameters:x (array) – Vector.
Returns:array – perpendicular vector
pyrw.RWessentials.unit_vector(vector)

Returns unit vector.

Parameters:vector (array) – Vector.
Returns:array – unit vector