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Index › Programming Questions & Help › OpenGL and 3D Libraries › 3D thick line / 3D-Box with 3D-Coordinates
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3D thick line / 3D-Box with 3D-Coordinates (Read 2194 times)
Chrisir
3D thick line / 3D-Box with 3D-Coordinates
Nov 13th, 2009, 2:09pm  
Hello guys,

I need your help again.

I am looking for a thicker 3D-line or a 3D-box.

   line (x1,y1,z1, x2,y2,z2 );

But with strokeWeight we have a problem in 3D. See manual.
The line is to thin (in Z-Direction).

Anyway - how can I produce a similar
   box (x1,y1,z1, x2,y2,z2 );
?

That would be great, but box takes only height etc. as Parameters.

And I can't find my way through all this rotateX, rotateY-stuff to manipulate the box.

Can somebody help me with a function

   box3D (x1,y1,z1, x2,y2,z2 );

which takes the line-Coordinates and draws a box instead,
x1,y1,z1 being the upper left corner in the back,
x2,y2,z2 being the lower right corner in the front.

Thank you so much!

Greetings,

Chris
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ben_hem
Re: 3D thick line / 3D-Box with 3D-Coordinates
Reply #1 - Nov 13th, 2009, 8:54pm  
You can use glLineWidth() in pure GL mode, which requires creating an openGL object...here's a quick example of that (not the lineweight, just the gl setup)

http://benhem.com/games/GLP5align

but there's no quick "box" function in GL, so you'd need to write a function to draw a series of rectangles.  You can do it!  Remember to use pushMatrix() and popMatrix() (or glPushMatrix etc. if in pure GL mode) -- and to use radians in Processing, degrees in pure GL mode.  (glRotatef.)  In either mode, you can simulate thick stroke-edges by making a subroutine to draw a square with rectangles along the edges, then a routine to slap 6 of those into a cube shape...
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Chrisir
Re: 3D thick line / 3D-Box with 3D-Coordinates
Reply #2 - Nov 16th, 2009, 11:12am  
Hello,

thank you very much for your quick reply.
Highly appreciated.
Unfortunately I don't have the time or the knowledge to go into the problem that deeply.

Thank you very much anyway!

Greetings,

Chris
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Chrisir
Re: 3D thick line / 3D-Box with 3D-Coordinates
Reply #3 - Nov 24th, 2009, 11:48am  
Hello everyone,

sorry, I tried a lot for this problem in the mean time...

But to no avail!

Cn anybody please pass me a function for a 3d Box taking as parameters left upper corner in the back and right lower corner in the front?

Thanks!

Chris
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Chrisir
Re: 3D thick line / 3D-Box with 3D-Coordinates
Reply #4 - Dec 6th, 2009, 8:48am  
Please don't answer anymore.
This is somewhat misleading.

Thanks!
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