expyriment.misc.geometry¶
The geometry module.
This module contains miscellaneous geometry functions for expyriment.
Attributes¶
Modules¶
Functions¶
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expyriment.misc.geometry.coordinates2position(coordinate)¶ Convert a coordinate on the screen to an expyriment position.
Parameters: coordinate : (int, int)
coordinate (x,y) to convert
Returns: coordinate : (int, int)
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expyriment.misc.geometry.lines_intersect(pa, pb, pc, pd)¶ Return true if two line segments are intersecting
Parameters: pa : misc.XYPoint
point 1 of line 1
pb : misc.XYPoint
point 2 of line 1
pc : misc.XYPoint
point 1 of line 2
pb : misc.XYPoint
point 2 of line 2
Returns: check : bool
True if lines intersect
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expyriment.misc.geometry.points_to_vertices(points)¶ Returns vertex representation of the points (int, int) in xy-coordinates
Parameters: points : (int, int)
list of points
Returns: vtx : list
list of vertices
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expyriment.misc.geometry.position2coordinate(position)¶ Convert an expyriment position to a coordinate on screen.
Parameters: coordinate : (int, int)
coordinate (x,y) to convert
Returns: coordinate : (int, int)
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expyriment.misc.geometry.position2visual_angle(position, viewing_distance, monitor_size)¶ Convert an expyriment position (pixel) to a visual angle from center.
Parameters: position : (int, int)
position (x,y) to convert
viewing_distance : numeric
viewing distance in cm
monitior_size : numeric
physical size of the monitor in cm (x, y)
Returns: angle : (float, float)
visual angle for x & y dimension
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expyriment.misc.geometry.visual_angle2position(visual_angle, viewing_distance, monitor_size)¶ Convert an position defined as visual angle from center to expyriment position (pixel).
Parameters: visual_angle : (numeric, numeric)
position in visual angle (x,y) to convert
viewing_distance : numeric
viewing distance in cm
monitior_size : (numeric, numeric)
physical size of the monitor in cm (x, y)
Returns: position : (float, float)
position (x,y)