Back to Adaptive Vision Studio website
You are here: Start » Filter Reference » Geometry 2D Spatial Transforms » PointAlongArc
Module: | FoundationLite |
---|
Transforms a point to a coordinate system in which the 'axis' arc is vertical or horizontal.
Name | Type | Description | |
---|---|---|---|
inPoint | Point2D | Input point | |
inAxis | Arc2D | Input axis arc | |
inAxisType | Axis | Type of axis the input axis arc is parallel to | |
inAxisCoordinate | Real | Coordinate of the axis arc | |
inInverse | Bool | Switches to the inverse operation | |
outPoint | Point2D | Transformed point |
Applications
Usually used to revert an ImageAlongArc transformation.
Description
This operation transforms a point - inPoint - between two coordinate systems: the one linked with 'axis' arc inAxis and the original one. Direction of this conversion is based on inInverse value:
- if it is true, inPoint is converted to original coordinate system
- if it is false, inPoint is converted from original coordinate system
Coordinate system linked with inAxis is some transformation of the original one, satisfying these conditions:
- 'axis' arc is represented as a straight line
- 'axis' arc is horizontal if inAxisType is set to X or vertical if inAxisType is set to Y
- if inAxisType is set to X, the Y coordinate of 'axis' arc is equal to inAxisCoordinate. If inAxisType is set to Y, the X coordinate of 'axis' arc is equal to inAxisCoordinate
Hints
- If this filter is used to reverse ImageAlongArc transformation you should set inAxis and inAxisType to the same values as corresponding ones in ImageAlongArc. inAxisCoordinate should be set to a half of ImageAlongArc.inScanWidth.
Examples
Complexity Level
This filter is available on Advanced Complexity Level.
See Also
- ImageAlongArc – Creates an image from pixels traversed along an arc.
- PathAlongArc – Transforms a path to a coordinate system in which the 'axis' arc is vertical or horizontal.
- PointAlongPath – Transforms a point to a coordinate system in which the 'axis' path is vertical or horizontal.