Away3D Forum Wireframe shader

Luca, Sr. Member
Posted: 30 July 2013 01:41 PM Total Posts: 230 [ # 16 ]

for example:
http://en.wikipedia.org/wiki/Altitude_(triangle)

John Brookes, Moderator
Posted: 30 July 2013 01:43 PM Total Posts: 732 [ # 17 ]

The way I see it. (May be wrong)

private function vertexToEdgeDistance(v1:Vector3D, v2:Vector3D, v3:Vector3D) : Number
{
 var vA:Vector3D = v2.subtract(v1);
 var vB:Vector3D = v3.subtract(v1);
 var vC:Vector3D = v3.subtract(v2);
 return vA.crossProduct(vB).length / vC.length;
}


a0 = vertexToEdgeDistance(Vertex1, Vertex2, Vertex3);
b0 = vertexToEdgeDistance(Vertex2, Vertex1, Vertex3);
c0 = vertexToEdgeDistance(Vertex3, Vertex1, Vertex2); 

That then makes the edge thickness of the triangle sides equal for any triangle and thickness.

Luca, Sr. Member
Posted: 30 July 2013 01:55 PM Total Posts: 230 [ # 18 ]

Hey seems to be really ok…

Thanks for your help ... John

Now we have a Wireframe shader

but…

Luca, Sr. Member
Posted: 30 July 2013 02:00 PM Total Posts: 230 [ # 19 ]

Hey, you have read right….

Luca, Sr. Member
Posted: 30 July 2013 02:01 PM Total Posts: 230 [ # 20 ]

I love you !!!!

Luca, Sr. Member
Posted: 30 July 2013 02:05 PM Total Posts: 230 [ # 21 ]

You publish the right ( corrected ) source ?

beers, Member
Posted: 30 July 2013 07:22 PM Total Posts: 53 [ # 22 ]

Does this wireframe shader actually work in away3d? If so…AWESOME!

I hope this shader (and the method that auto creates the extra vertex distance buffer) can be included in the next release of Away3D.

I’ll keep my fingers crossed,
beers

Luca, Sr. Member
Posted: 31 July 2013 06:00 AM Total Posts: 230 [ # 23 ]

Hi beers

Since Away3D must always work ...

Have you tested this shader with complex geometries, different camara distance, ecc
( today i will try debugging it with NVidia Shader Debugger or http://software.intel.com/en-us/articles/igpa-getting-started-guide-for-windows or PIX ) ?

I hope you have time the help us like JohnBrookes ( thanks again ) that have correct my erronous interpretation of the formula that give the distance between vertex and opposite edge of the triangle in question.

The thickness of the line seem to be ok.
The color also.

This method comes from NVidia, and, this is frome the original NVidia paper:

The method was presented in the SIGGRAPH 2006 sketch “Single-Pass Wireframe Rendering”

http://www.scratchapixel.com/

Do you whant to be a beta tester ? I enjoy

Luca, Sr. Member
Posted: 31 July 2013 07:46 AM Total Posts: 230 [ # 24 ]

PIX “attached” to Flash Player Debugger:

http://northwaygames.com/?p=1109

http://tomtech999.wordpress.com/2011/09/07/debugging-directx-applications-with-pix-for-windows/

https://www.youtube.com/watch?v=lRQyMEF1W50

Luca, Sr. Member
Posted: 31 July 2013 08:44 AM Total Posts: 230 [ # 25 ]

Intel GPA “attached” to Flash Player Debugger:

Luca, Sr. Member
Posted: 31 July 2013 01:12 PM Total Posts: 230 [ # 26 ]

damn, damn, damn, GEOMETRY SHADER WHERE ARE YOU ?

http://www.adobe.com/devnet/flashplayer/articles/vertex-fragment-shaders.html

Luca, Sr. Member
Posted: 02 August 2013 07:27 AM Total Posts: 230 [ # 27 ]

No one has taken a look in the folder PB ?

Away3D\pb

....

hey we have Pixel Bender…

i’m working on Games maker AWD Exporter but what do you think .... ?

Wireframe shader Software: Away3D 4.x

Luca, Sr. Member Posted: 30 July 2013 01:41 PM Total Posts: 230 [ # 16 ] for example: http://en.wikipedia.org/wiki/Altitude_(triangle)
John Brookes, Moderator Posted: 30 July 2013 01:43 PM Total Posts: 732 [ # 17 ] The way I see it. (May be wrong) `private function vertexToEdgeDistance(v1:Vector3D, v2:Vector3D, v3:Vector3D) : Number { var vA:Vector3D = v2.subtract(v1); var vB:Vector3D = v3.subtract(v1); var vC:Vector3D = v3.subtract(v2); return vA.crossProduct(vB).length / vC.length; } a0 = vertexToEdgeDistance(Vertex1, Vertex2, Vertex3); b0 = vertexToEdgeDistance(Vertex2, Vertex1, Vertex3); c0 = vertexToEdgeDistance(Vertex3, Vertex1, Vertex2);` That then makes the edge thickness of the triangle sides equal for any triangle and thickness.
Luca, Sr. Member Posted: 30 July 2013 01:55 PM Total Posts: 230 [ # 18 ] Hey seems to be really ok… Thanks for your help ... John Now we have a Wireframe shader but…
Luca, Sr. Member Posted: 30 July 2013 02:00 PM Total Posts: 230 [ # 19 ] Hey, you have read right….
Luca, Sr. Member Posted: 30 July 2013 02:01 PM Total Posts: 230 [ # 20 ] I love you !!!!
Luca, Sr. Member Posted: 30 July 2013 02:05 PM Total Posts: 230 [ # 21 ] You publish the right ( corrected ) source ?
beers, Member Posted: 30 July 2013 07:22 PM Total Posts: 53 [ # 22 ] Does this wireframe shader actually work in away3d? If so…AWESOME! I hope this shader (and the method that auto creates the extra vertex distance buffer) can be included in the next release of Away3D. I’ll keep my fingers crossed, beers
Luca, Sr. Member Posted: 31 July 2013 06:00 AM Total Posts: 230 [ # 23 ] Hi beers Since Away3D must always work ... Have you tested this shader with complex geometries, different camara distance, ecc ( today i will try debugging it with NVidia Shader Debugger or http://software.intel.com/en-us/articles/igpa-getting-started-guide-for-windows or PIX ) ? I hope you have time the help us like JohnBrookes ( thanks again ) that have correct my erronous interpretation of the formula that give the distance between vertex and opposite edge of the triangle in question. The thickness of the line seem to be ok. The color also. This method comes from NVidia, and, this is frome the original NVidia paper: The method was presented in the SIGGRAPH 2006 sketch “Single-Pass Wireframe Rendering” http://www.scratchapixel.com/ Do you whant to be a beta tester ? I enjoy
Luca, Sr. Member Posted: 31 July 2013 07:46 AM Total Posts: 230 [ # 24 ] PIX “attached” to Flash Player Debugger: http://northwaygames.com/?p=1109 http://tomtech999.wordpress.com/2011/09/07/debugging-directx-applications-with-pix-for-windows/ https://www.youtube.com/watch?v=lRQyMEF1W50
Luca, Sr. Member Posted: 31 July 2013 08:44 AM Total Posts: 230 [ # 25 ] Intel GPA “attached” to Flash Player Debugger:
Luca, Sr. Member Posted: 31 July 2013 01:12 PM Total Posts: 230 [ # 26 ] damn, damn, damn, GEOMETRY SHADER WHERE ARE YOU ? http://www.adobe.com/devnet/flashplayer/articles/vertex-fragment-shaders.html
Luca, Sr. Member Posted: 02 August 2013 07:27 AM Total Posts: 230 [ # 27 ] No one has taken a look in the folder PB ? Away3D\pb .... hey we have Pixel Bender… i’m working on Games maker AWD Exporter but what do you think .... ?

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