Comments on: V0.65 – Shadows in 3D! http://www.functionblog.com/?p=90 blog about AS3, PHP 'n tech Mon, 05 Jul 2010 13:18:27 +0200 http://wordpress.org/?v=2.8.1 hourly 1 By: Dave http://www.functionblog.com/?p=90&cpage=1#comment-2627 Dave Mon, 01 Feb 2010 18:26:48 +0000 http://www.gamitude.nl/?p=90#comment-2627 I know about tracing lines from light through points on object, but how do you find out x,y,z point in space at which this line intersects with ground plane ??? I know about tracing lines from light through points on object, but how do you find out x,y,z point in space at which this line intersects with ground plane ???

]]> By: admin http://www.functionblog.com/?p=90&cpage=1#comment-2626 admin Sun, 31 Jan 2010 11:45:02 +0000 http://www.gamitude.nl/?p=90#comment-2626 I'm sorry I haven't had time to reply to your question earlier on. As far as I remember, the shadows edges are formed by tracing lines along edges of the objects onto the surface. Than made a lot of triangles with the objects center forming all the triangles tops.. So I might have directed the calculated triangles directly to the polygon rendering function. There was a neat method for finding the objects edges which I don't remember probably had to do something with comparing surface normal's to the relative light's position vector. If I find time I'll look into it and find you a better explanation. I’m sorry I haven’t had time to reply to your question earlier on. As far as I remember, the shadows edges are formed by tracing lines along edges of the objects onto the surface. Than made a lot of triangles with the objects center forming all the triangles tops.. So I might have directed the calculated triangles directly to the polygon rendering function. There was a neat method for finding the objects edges which I don’t remember probably had to do something with comparing surface normal’s to the relative light’s position vector. If I find time I’ll look into it and find you a better explanation.

]]> By: Dave http://www.functionblog.com/?p=90&cpage=1#comment-2622 Dave Sun, 03 Jan 2010 03:09:43 +0000 http://www.gamitude.nl/?p=90#comment-2622 Hi I have a question, how does your code calculate this shadows and cast on to the other object, as I have searched through net and this is quite hard stuff to find. Even if I calculate vectors from light source through each corner vertex, then there is another problem to calculate intersection point of this vector with the face of object which is receiving the shadow. Is it possible you could post some tips how you have done it? Hi I have a question, how does your code calculate this shadows and cast on to the other object, as I have searched through net and this is quite hard stuff to find. Even if I calculate vectors from light source through each corner vertex, then there is another problem to calculate intersection point of this vector with the face of object which is receiving the shadow.
Is it possible you could post some tips how you have done it?

]]> By: Dave http://www.functionblog.com/?p=90&cpage=1#comment-2621 Dave Tue, 29 Dec 2009 04:19:24 +0000 http://www.gamitude.nl/?p=90#comment-2621 Hey man, great stuff you have got here, I am writing my own 3d enviroment as well. How did you project this shadows on the surface? any tips would be helpful. Cheers Hey man, great stuff you have got here, I am writing my own 3d enviroment as well. How did you project this shadows on the surface? any tips would be helpful.

Cheers

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