Andrew,
An RHatchData object lets me set a custom pattern:
hatchData.setCustomPattern(specialPattern);
specialPattern is an RPattern object.
specialPattern = new RPattern("myPattern", "My custom pattern");
I then need to add the line definitions of this pattern with addPatternLine(patternLine1)
patternLine1 is an RPatternLine object.
patternLine1 = new RPatternLine();
I should now be able to specify: patternLine1.angle, patternLine1.basePoint, patternLine1.offset and patternLine1.dashes …
There are getters but no setter methods to change these attributes.
Supposing we must change them in direct.
But this fails silent or critical for these Public Attributes.
I can convert patternLine1 to text with .toString() and then I get:
RPatternLine( angle:3.15381e-316 base:"RVector(0.000000, 0.000000, 0.000000, 1)" offset:"RVector(0.000000, 0.000000, 0.000000, 1)")
Here angle is something very small and in degrees … Its never twice the same value
base is basePoint as RVector and offset is also an RVector … Both the default nullVector.
There are yet no dashes to list.
Changing the angle attribute is ignored.
Specifying a vector for basePoint or offset is ignored.
Specifying X & Y of these vector attributes fails critical.
- TypeError: Result of expression ‘patternLine.basePoint’ [undefined] is not an object.
TypeError: Result of expression ‘patternLine.offset’ [undefined] is not an object.
How should we define an RPattern object … 
Perhaps I am able to ‘steel’ line definitions (RPatternLine) from a standard pattern and use scale/rotate …
… But my options are limited for something more complex.
Regards,
CVH