CImage:Angle
The Angle method calculates the angle in degrees between a line formed by 2 image points measured in pixel coordinates. To measure an angle in world coordinates, use the AngleWcs method.
nAngle = CImage:Angle( x1, y1, x2, y2)
x1, y1,x2, y2 are pixel coordinate values and may be expressed as numbers or strings.
On success, this method returns nAngle as a number.
On failure, this method returns the default value 0.
The Angle method returns an angle in degrees. The angle is measured positive with increasing x value and increasing y value. For a discussion of angle and its measurement in different image types, see Angle Measurement Definition.
Assume an image is displayed and attached to a CImageView named V. The following script measures the angle formed by two points (x1,y1) and (x2,y2) when the coordinates are in pixel units:
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-- load the image from a |
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-- point 1 |
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-- point 2 |
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-- make the measurement |
CImage class, AngleWcs, Angle Measurement Definition
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