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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the SoCube node class.
|
| Author(s) : Paul S. Strauss, Nick Thompson
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_CUBE_
#define _SO_CUBE_
#include <Inventor/SbLinear.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/nodes/SoShape.h>
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoCube
//
// Simple cube. Default size is -1 to +1 in all 3 dimensions, but the
// width, height, and depth fields can be used to change these.
//
//////////////////////////////////////////////////////////////////////////////
// C-api: public=width, height, depth
class SoCube : public SoShape {
SO_NODE_HEADER(SoCube);
public:
// Fields
SoSFFloat width; // Size in x dimension
SoSFFloat height; // Size in y dimension
SoSFFloat depth; // Size in z dimension
// Constructor
SoCube();
SoEXTENDER public:
// Implements actions
virtual void GLRender(SoGLRenderAction *action);
virtual void rayPick(SoRayPickAction *action);
SoINTERNAL public:
static void initClass();
protected:
// Generates triangles representing a cube
virtual void generatePrimitives(SoAction *action);
// Computes bounding box of cube
virtual void computeBBox(SoAction *action, SbBox3f &box,
SbVec3f ¢er);
// Overrides standard method to create an SoCubeDetail instance
virtual SoDetail * createTriangleDetail(SoRayPickAction *action,
const SoPrimitiveVertex *v1,
const SoPrimitiveVertex *v2,
const SoPrimitiveVertex *v3,
SoPickedPoint *pp);
virtual ~SoCube();
private:
static SbVec3f coords[8]; // Corner coordinates
static SbVec2f texCoords[4]; // Face corner texture coordinates
static SbVec3f normals[6]; // Face normals
static SbVec3f edgeNormals[12];// Edge normals (for wire-frame)
static const SbVec3f *verts[6][4]; // Vertex references to coords
// This flag indicates whether picking is done on a real cube or a
// cube that is just a bounding box representing another shape. If
// this flag is TRUE, a pick on the cube should not generate a
// detail, since the bounding box is not really in the picked path.
SbBool pickingBoundingBox;
// Returns TRUE if per face materials are specified
SbBool isMaterialPerFace(SoAction *action) const;
// Computes number of divisions per side based on complexity
int computeNumDivisions(SoAction *action) const;
// Computes real half-width, -height, -depth
void getSize(float &hWidth,
float &hHeight,
float &hDepth) const;
// These render the cube
void GLRenderGeneric(SoGLRenderAction *action,
SbBool sendNormals, SbBool doTextures);
void GLRenderNvertTnone(SoGLRenderAction *action);
// Renders or picks cube representing given bounding box. These
// are used by SoShape to implement BOUNDING_BOX complexity.
void GLRenderBoundingBox(SoGLRenderAction *action,
const SbBox3f &bbox);
void rayPickBoundingBox(SoRayPickAction *action,
const SbBox3f &bbox);
// SoShape needs to get at the above methods
friend class SoShape;
};
#endif /* _SO_CUBE_ */
|
