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(grdraw point1 point2 color [highlight])


Draw a line.


This function draws a vector between two points in the current viewport. The first two arguments, pint1 and point2, represent 2-D or 3-D endpoints for the vector in terms of the current UCS. These are written as lists of real numbers. If the vector extends beyond the screen, progeCAD automatically clips it.

The vector is drawn in the color specified, using the integer color argument. The integer -1 signifies the color XOR, which changes its color to complement whatever it draws over, or erases itself when overdrawn.

The highlight argument is optional. If provided, the vector will be drawn using the current highlighting method. If highlight is not provided or is set to zero, the normal display mode is used. The value must be an integer.

Examples

Code Results
(grdraw '(0 0) '(4 8) -1) Draws an XOR vector from 0,0 to 4,8
(grdraw '(3.5 3.0) '(10.2 7.8) 3 1) Draws a highlighted vector in color 3 from 3.5, 3.0 to 10.2, 7.8

NOTE Use grvecs to draw multiple vectors.

(grvecs vector-lists [trans])

LISP Compatibility

Programming Overview of LISP (LISt Processing) Language

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