Basic geometric shape classes.
Macros:
Definition of the parent class for 2D geometric shapes Destructor void (*destruct)(void);
Get the area of the geometry
Output and side effect(s):
Return the area double (*getArea)(void);
Get the perimeter of the geometry
Output and side effect(s):
Return the perimeter double (*getPerimeter)(void);
Convert the geometry into a Bezier spline
Output and side effect(s):
Return the Bezier spline approximating the geometry. CapyBezierSpline (*getBezierSpline)(void);
Maximum number of intersecting points in a CapyGeometry2DIntersection
Enumerations:
None.
Typedefs:
Parent class for 2D geometric shapes
Struct CapyPoint2D :
Struct CapyPoint2D's properties:
Location of the corner
Struct CapyPoint2D's methods:
None.
Struct CapySegment :
Struct CapySegment's properties:
Inherits CapyGeometry2D
Array of two positions, the locations of the segment extremities.
Struct CapySegment's methods:
Destructor
Struct CapyTriangle :
Struct CapyTriangle's properties:
Inherits CapyGeometry2D
Array of three positions, the locations of the triangle's corners.
Struct CapyTriangle's methods:
Destructor
Get the barycentric coordinates of a position relative to the triangle
Input argument(s):
pos: the position
coord: the barycentric coordinates
Output and side effect(s):
'coord' is updated. If at least one of the three barycentric coordinates is negative, the position is outside the triangle. Barycentric coordinates in [-inf, 1].
Struct CapyQuadrilateral :
Struct CapyQuadrilateral's properties:
Inherits CapyGeometry2D
Array of four positions, the location of the quadrilateral's corners, in clockwise order.
Struct CapyQuadrilateral's methods:
Destructor
Get the bilinear coordinates of a point in the quadrilateral from its coordinates in world coordinate system
Input argument(s):
pos: the position in world coordinate system
coords: double[2] updated with the bilinear coordinates
Struct CapyRectangle :
Struct CapyRectangle's properties:
Inherits CapyGeometry2D
Array of two positions, the location of the quadrilateral's corners (such as corners[0].x < corners[1].x and corners[0].y < corners[1].y).
Struct CapyRectangle's methods:
Destructor
Struct CapyCircle :
Struct CapyCircle's properties:
Inherits CapyGeometry2D
Center
Radius
Struct CapyCircle's methods:
Destructor
Get an arc of the circle as a Bezier spline
Input argument(s):
pointA: the beginning of the arc
pointB: the end of the arc
Output and side effect(s):
Return a Bezier spine approximating the arc from 'pointA' to 'pointB' counter-clockwise. If the points are not on the circle, their projection on the circle is used instead.
Struct CapyGeometry2DIntersection :
Struct CapyGeometry2DIntersection's properties:
Number of intersection point
Intersection points
Struct CapyGeometry2DIntersection's methods:
Destructor
Get the intersecting point between two segments Inputs: segmentA: first segment segmentB: second segment flagStrict: flag to restrict to the intersection inside the segments
Output and side effect(s):
Update the intersection points of 'segmentA' and 'segmentB'
Get the intersecting point(s) between two circles Inputs: circleA: first circle circleB: second circle
Output and side effect(s):
Output and side effect(s):
Update the intersection points of 'circleA' and 'circleB'. Points are ordered counter-clockwise on 'circleA' from the intersection of the segment connecting the center the circles
Get the intersecting point(s) between a segment and a circle Inputs: seg: the segment circle: the circle flagStrict: flag to restrict to the intersection inside the segment
Output and side effect(s):
Update the intersection points of 'seg' and 'circle'. Points are ordered according to the parameter 't' of the segment.
Functions:
Create a CapyGeometry2D
Output and side effect(s):
Return a CapyGeometry2D
Create a CapySegment
Output and side effect(s):
Return a CapySegment, points initialised to ((0, 0), (0, 1))
Allocate memory for a new CapySegment and create it
Output and side effect(s):
Return a CapySegment, points initialised to ((0, 0), (0, 1))
Exception(s):
May raise CapyExc_MallocFailed.
Free the memory used by a CapySegment* and reset '*that' to NULL
Input argument(s):
that: a pointer to the CapySegment to free
Create a CapyTriangle
Output and side effect(s):
Return a CapyTriangle, corners initialised to ((0, 0), (0, 1), (1, 0))
Allocate memory for a new CapyTriangle and create it
Output and side effect(s):
Return a CapyTriangle, corners initialised to ((0, 0), (0, 1), (1, 0))
Exception(s):
May raise CapyExc_MallocFailed.
Free the memory used by a CapyTriangle* and reset '*that' to NULL
Input argument(s):
that: a pointer to the CapyTriangle to free
Create a CapyQuadrilateral
Output and side effect(s):
Return a CapyQuadrilateral, corners initialised to ((0, 0), (0, 1), (1, 1), (1, 0))
Allocate memory for a new CapyQuadrilateral and create it
Output and side effect(s):
Return a CapyQuadrilateral, corners initialised to ((0, 0), (0, 1), (1, 1), (1, 0))
Exception(s):
May raise CapyExc_MallocFailed.
Free the memory used by a CapyQuadrilateral* and reset '*that' to NULL
Input argument(s):
that: a pointer to the CapyQuadrilateral to free
Create a CapyRectangle
Output and side effect(s):
Return a CapyRectangle, corners initialised to ((0, 0), (0, 1), (1, 1), (1, 0))
Allocate memory for a new CapyRectangle and create it
Output and side effect(s):
Return a CapyRectangle, corners initialised to ((0, 0), (0, 1), (1, 1), (1, 0))
Exception(s):
May raise CapyExc_MallocFailed.
Free the memory used by a CapyRectangle* and reset '*that' to NULL
Input argument(s):
that: a pointer to the CapyRectangle to free
Create a CapyCircle
Output and side effect(s):
Return a CapyCircle, center initialised to (0, 0) and radius initialised to 1.
Allocate memory for a new CapyCircle and create it
Output and side effect(s):
Return a CapyCircle, center initialised to (0, 0) and radius initialised to 1.
Exception(s):
May raise CapyExc_MallocFailed.
Free the memory used by a CapyCircle* and reset '*that' to NULL
Input argument(s):
that: a pointer to the CapyCircle to free
Create a CapyGeometry2DIntersection
Output and side effect(s):
Return a CapyGeometry2DIntersection initialised to 0