1 -- Created on: 1997-02-12
2 -- Created by: Alexander BRIVIN
3 -- Copyright (c) 1997-1999 Matra Datavision
4 -- Copyright (c) 1999-2012 OPEN CASCADE SAS
6 -- The content of this file is subject to the Open CASCADE Technology Public
7 -- License Version 6.5 (the "License"). You may not use the content of this file
8 -- except in compliance with the License. Please obtain a copy of the License
9 -- at http://www.opencascade.org and read it completely before using this file.
11 -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12 -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
14 -- The Original Code and all software distributed under the License is
15 -- distributed on an "AS IS" basis, without warranty of any kind, and the
16 -- Initial Developer hereby disclaims all such warranties, including without
17 -- limitation, any warranties of merchantability, fitness for a particular
18 -- purpose or non-infringement. Please see the License for the specific terms
19 -- and conditions governing the rights and limitations under the License.
23 class PerspectiveCamera from Vrml
25 ---Purpose: specifies a PerspectiveCamera node of VRML specifying properties of cameras.
26 -- A perspective camera defines a perspective projection from a viewpoint. The viewing
27 -- volume for a perspective camera is a truncated right pyramid.
34 Create returns PerspectiveCamera from Vrml; -- myPosition(0 0 1) Camera looks along the negative Z-axis
35 -- myOrientation(0 0 1 0)
37 -- myHeightAngle(0.785398)
38 Create ( aPosition : Vec from gp;
39 aOrientation : SFRotation from Vrml;
40 aFocalDistance : Real from Standard;
41 aHeightAngle : Real from Standard )
42 returns PerspectiveCamera from Vrml;
44 SetPosition ( me : in out; aPosition : Vec from gp );
45 Position ( me ) returns Vec from gp;
47 SetOrientation ( me : in out; aOrientation : SFRotation from Vrml );
48 Orientation ( me ) returns SFRotation from Vrml;
50 SetFocalDistance ( me : in out; aFocalDistance : Real from Standard );
51 FocalDistance ( me ) returns Real from Standard;
53 SetAngle ( me : in out; aHeightAngle : Real from Standard );
54 Angle ( me ) returns Real from Standard;
56 Print ( me; anOStream: in out OStream from Standard) returns OStream from Standard;
61 myPosition : Vec from gp; -- Location of viewpoint
62 myOrientation : SFRotation from Vrml; -- Orientation (rotation with respect to (0,0,-1) vector)
63 myFocalDistance : Real from Standard; -- Distance from viewpoint to point of focus.
64 myHeightAngle : Real from Standard; -- Angle (in radians) of field
65 -- of view, in height direction
66 end PerspectiveCamera;