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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 $
|
| Description:
| This file defines the SoProfileCoordinateElement class.
|
| Author(s) : Paul S. Strauss, Nick Thompson, Thad Beier
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_PROFILE_COORDINATE_ELEMENT
#define _SO_PROFILE_COORDINATE_ELEMENT
#include <Inventor/SbLinear.h>
#include <Inventor/elements/SoReplacedElement.h>
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoProfileCoordinateElement
//
// Element storing the current profile coordinates, as either 2-D or
// 3-D points.
//
// This class allows read-only access to the top element in the state
// to make accessing several values in it more efficient. Individual
// values must be accessed through this instance.
//
//////////////////////////////////////////////////////////////////////////////
SoEXTENDER class SoProfileCoordinateElement : public SoReplacedElement {
SO_ELEMENT_HEADER(SoProfileCoordinateElement);
public:
// Initializes element.
virtual void init(SoState *state);
// Sets the current profile coordinates
static void set2(SoState *state, SoNode *node,
int32_t numCoords, const SbVec2f *coords);
static void set3(SoState *state, SoNode *node,
int32_t numCoords, const SbVec3f *coords);
// Returns the top (current) instance of the element in the state
static const SoProfileCoordinateElement * getInstance(SoState *state);
// Returns the number of coordinate points in an instance
int32_t getNum() const { return numCoords; }
// Returns the indexed coordinate from an element as a 2- or
// 3-vector, converting if necessary.
const SbVec2f & get2(int index) const;
const SbVec3f & get3(int index) const;
// TRUE if set2() was called.
SbBool is2D() const { return coordsAre2D; }
// Returns the default profile coordinate
static SbVec2f getDefault2() { return SbVec2f(0.0, 0.0); }
static SbVec3f getDefault3() { return SbVec3f(0.0, 0.0, 1.0); }
virtual void print(FILE *fp) const;
SoINTERNAL public:
// Initializes the SoCoordinateElement class
static void initClass();
protected:
int32_t numCoords;
const SbVec2f *coords2;
const SbVec3f *coords3;
SbBool coordsAre2D;
virtual ~SoProfileCoordinateElement();
private:
static SbVec2f *defaultCoord2;
SbVec2f convert2; // To convert from 3-D to 2-D
SbVec3f convert3; // To convert from 2-D to 3-D
};
#endif /* _SO_PROFILE_COORDINATE_ELEMENT */
|
