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06-07-2003, 08:25 AM   #1
griffen
Registered User

Join Date: Jan 2003
Posts: 56
Calculating the Z axis with no Vanishing Point?

I'm trying to caculate the movement of a slab along the Z axis. Because there is no Vanishing point does this make things a little tricky?

What's the best way of moving the slab along the Z axis?
I'm created a GIF of what I'm trying to do.

Thanks.
Attached Images
 xyz.gif (3.9 KB, 220 views)

 06-07-2003, 04:55 PM #2 pixelwit village halfwit     Join Date: Jul 2001 Location: USA, PA Posts: 3,330 Drawing isometric views should be a good bit easier than calculating 3D with a vanishing point. To move a point "back" in your example all you have to do is move it up and to the right, to move it "forward" just move it down and to the left. -PiXELWiT http://www.pixelwit.com __________________ There are no answers, only choices.
06-07-2003, 10:01 PM   #3
senocular
six eyes

Join Date: Jan 2003
Location: San Francisco, CA (USA)
Posts: 7,875

its a good idea to make a base plane of operations in normal coordinate space and just use a method to tanslate those values into the perspective desired (like the one in your image). Illl make an example:

... technically, the 'normal' coordinate clip wouldnt need to be seen, or really even existant, but it shows you how the conceptual flat plane is converted to the screen in the skewed plane.
Attached Files
 skewedplane.zip (6.9 KB, 232 views)
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