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Index › Programming Questions & Help › Syntax Questions › mouseOver in 3D sketch
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mouseOver in 3D sketch (Read 819 times)
loper
mouseOver in 3D sketch
Nov 20th, 2009, 2:43am  
Hello, I'm having some issues with my 3D scene. I have some ellipses and a mouse over function of this type:
Code:

if(mouseX<=(aziende[i].x+(aziende[i].diameter)/2) && mouseX>=(aziende[i].x-(aziende[i].diameter)/2) && mouseY>=(aziende[i].y-(aziende[i].diameter)/2) && mouseY<=(aziende[i].y+(aziende[i].diameter)/2)){
 aziende[i].name();
 aziende[i].over=true;
 
 Azienda azienda = getAziendaByName(records[i].name);
 if(azienda!=null) {
 linea[i].over = true;
 }
 }


Probabily the issue is that in 3D (i'm using only a zoom in and a pan camera) I need to use the projections of the ellipses on the screen for the mouseOver.  But i don't know how to do that. Any help?

Thanks

Lorenzo
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blindfish
Re: mouseOver in 3D sketch
Reply #1 - Nov 20th, 2009, 5:11am  
You'll need to register mouseOver on the projections as you suggested, since the x,y coordinates don't correspond to your ellipses' positions on screen.  I've never done this but it's certainly been discussed here before.  IIRC you can create a 'mask' from your 3D object in a separate PImage; check the colour value of the pixel under the mouse location in this PImage and if it meets a threshold value you have mouseOver...

Obviously easier said than done Wink
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Where is the what if the what is in why?
 
loper
Re: mouseOver in 3D sketch
Reply #2 - Nov 20th, 2009, 6:32am  
Ok! i understand the idea, but i've no idea how to make that. Plus here i'm talking of 400 separate objects, how would i refer to one an not to another ellipse just using color?

tricky.
Lorenzo
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Cedric
Re: mouseOver in 3D sketch
Reply #3 - Nov 20th, 2009, 7:22am  
here are the hacks mentioned : http://processing.org/hacks/hacks:picking

btw please delete your other postings
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... twitter.com/CedricKiefer
WWW CedricKiefer 9570393 CedricKiefer  
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