| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970 |
- <html>
- <head>
- <title>Blitz3D Docs</title>
- <link rel=stylesheet href=../css/commands.css type=text/css>
- </head>
- <body>
- <h1>TFormPoint x#, y#, z#, source_entity, dest_entity</h1>
- <h1>Parameters</h1>
- <table>
- <tr>
- <td>
- x#, y#, z# = coordinates of a point in 3d space
<br />
- <br />
- source_entity = handle of source entity, or 0 for 3d world
<br />
- dest_entity = handle of destination entity, or 0 for 3d world
- </td>
- </tr>
- </table>
- <h1>Description</h1>
- <table>
- <tr>
- <td>
- Transforms between coordinate systems. After using TFormPoint the new
<br />
- coordinates can be read with TFormedX(), TFormedY() and TFormedZ().
<br />
-
<br />
-
<br />
- See EntityX() for details about local coordinates.
<br />
-
<br />
- Consider a sphere built with CreateSphere(). The 'north pole' is at (0,1,0).
<br />
- At first, local and global coordinates are the same. As the sphere is moved,
<br />
- turned and scaled the global coordinates of the point change.
<br />
-
<br />
- But it is always at (0,1,0) in the sphere's local space.
- </td>
- </tr>
- </table>
- <h1><a href=../3d_examples/TFormPoint.bb>Example</a></h1>
- <table>
- <tr>
- <td>
- ; TFormPoint example
<br />
-
<br />
- Graphics3D 640, 480
<br />
-
<br />
- s = CreateSphere() ; center at (0,0,0) north pole at (0,1,0)
<br />
-
<br />
- MoveEntity s, 1,2,3 ; center at (1,2,3) north pole at (1,2+1,3)
<br />
- ScaleEntity s, 10,10,10 ; center at (1,2,3) north pole at (1,2+10,3)
<br />
-
<br />
- ; Now verify that the north pole is at (1,12,3) in the 3d world
<br />
-
<br />
- TFormPoint 0,1,0, s,0 ; north pole transformed from sphere to world
<br />
-
<br />
- message$ = "North pole is at ( "
<br />
- message = message + TFormedX() + ", " + TFormedY() + ", " + TFormedZ() + " )"
<br />
-
<br />
- Text 180, 200, message
<br />
-
<br />
- Flip
<br />
-
<br />
- WaitKey()
<br />
- End
- </td>
- </tr>
- </table>
- <br>
- <a target=_top href=../index.htm>Index</a><br>
- <br>
- Click <a href=http://www.blitzbasic.co.nz/b3ddocs/command.php?name=TFormPoint&ref=comments target=_blank>here</a> to view the latest version of this page online</body>
- </html>
|
