Show overlapping prisms / blocks as solid

[James Goode]

Hello,

I have created some hatching in 3D for one of our objects. This has been done by using a for I=1 to … function and then cut around the shape with cutpolya.

Because my lines overlap diagonally due to it being a crosshatch, when I use project2 3, 270, 2 in 2D, it shows the lines crossing over. Is there any way that I can get rid of the overlapping lines so that it looks like one continuous block rather than separate elements?

	cutpolya     12, 1, 0,
				-50,            -50,      15, 
				50,            -50,      15, 
				50,          50,      15, 
				-50,          50,      15, 
				-50,            -50,     -1, 
				line_width-ll,          line_width-bl,      1, 
				line_width-ll,          B-line_width+tl,      1, 
				margin-line_width/2,         b-line_width+tl,      1, 
				margin-line_width/2,         margin-line_width/2,      1, 
				A-line_width/2,          margin-line_width/2,     1,
				A-line_width/2, line_width-bl, 1,
				line_width-ll, line_width-bl, -1
			
	addy -4
	rotz 45
						
	for i=1 to 40
	cprism_{4} mat_hatching, mat_hatching, mat_hatching, 7,
			5,          line_height,
				0,            0,            0,     15, mat_hatching,
				10,            0,            0,     15, mat_hatching,
				10,          hatching_width,            0,     15, mat_hatching,
				0,          hatching_width,            0,     15, mat_hatching,
				0,            0,            0,     -1, mat_hatching

	addy hatching_space
	next i
						
	DEL 40
	DEL 2

	addy 10
	rotz -45

	for i=1 to 40
	cprism_{4} mat_hatching, mat_hatching, mat_hatching, 7,
			5,          line_height,
				0,            0,            0,     15, mat_hatching,
				10,            0,            0,     15, mat_hatching,
				10,          hatching_width,            0,     15, mat_hatching,
				0,          hatching_width,            0,     15, mat_hatching,
				0,            0,            0,     -1, mat_hatching
	addy -hatching_space
	next i
						
	DEL 40
	DEL 2
	CUTEND

Thanks

[Péter Baksa]

Hi,

the line elimination in mask of CPRISM_{3} only works when the edges are in the same place, it doesn’t calculate intersections.

Other ways to do it:
– model CPRISMs that only touch eachother
– write a loop that PUTs the hole coordinates in a large CPRISM
– use ADDGROUP, it removes lines at intersections

Péter Baksa
Library Platform, Software Engineer
GRAPHISOFT SE

[Author]

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