tessellate.h

Go to the documentation of this file.

/*! \file
  \brief  Tesselator functions.  Allows tesselation of complex polygons into simple ones.
 
  \par Copyright Information
 
  Copyright (c) 2017 by The DiSTI Corporation.<br>
  11301 Corporate Blvd; Suite 100<br>
  Orlando, Florida 32817<br>
  USA<br>
  <br>
  All rights reserved.<br>
 
  This Software contains proprietary trade secrets of DiSTI and may not be
reproduced, in whole or part, in any form, or by any means of electronic,
mechanical, or otherwise, without the written permission of DiSTI.  Said
permission may be derived through the purchase of applicable DiSTI product
licenses which detail the distribution rights of this content and any
Derivative Works based on this or other copyrighted DiSTI Software.
 
  NO WARRANTY. THE SOFTWARE IS PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND,
AND ANY USE OF THIS SOFTWARE PRODUCT IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW, DISTI AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES
AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT, WITH REGARD TO THE SOFTWARE.
 
  LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
IN NO EVENT SHALL DISTI OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION,
DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
INFORMATION, OR ANY OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR
INABILITY TO USE THE SOFTWARE, EVEN IF DISTI HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES.  DISTI'S ENTIRE LIABILITY AND YOUR EXCLUSIVE REMEDY SHALL NOT
EXCEED FIVE DOLLARS (US$5.00).
 
  The aforementioned terms and restrictions are governed by the laws of the
State of Florida and the United States of America.
 
*/
#ifndef __TESSELLATE_H
#define __TESSELLATE_H
 
#include "dynamic_array.h"
#include "gls_include.h"
 
// copied from gui_defs.h
#define ID_TESSELLATE_SINGLE 340     ///< Unused, kept for backward compatibility.
#define ID_TESSELLATE_UNION 341      ///< Perform tessellation as a union of objects.
#define ID_TESSELLATE_INTERSECT 342  ///< Perform tessellation as the intersection of objects.
#define ID_TESSELLATE_DIFFERENCE 343 ///< Perform tessellation as a difference of objects.
 
namespace disti
{
typedef DisplayObject* ( *CreateGroupFunc )();       ///< Typedef for a function pointer used to create a group.
typedef DisplayObject* ( *CreatePolyFunc )();        ///< Typedef for a function pointer used to create a polygon.
typedef Group* ( *DecomposeFunc )( DisplayObject* ); ///< Typedef for a function pointer used to decompose an object.
 
/**
  Tesselator functions.  Implements polygon tessellation.
 */
 
/** Called by application to perform a CSG operation while tesselating one group of objects.
  * \param obj_list Pointer to group of objects to tessellate
  * \return  Pointer to the group of the polygons generated during tesselation.
  * The polygons will all be 2, or 3 vertices no more!
  */
GLS_EXPORT Group* Tessellate( Group* obj_list, CreateGroupFunc, CreatePolyFunc, DecomposeFunc );
 
/** Called by application to perform a CSG operation while tesselating two objects.
 * \param object_list List containing the two objects to tessellate
 * \param tesstype The operation to perform (union, intersect, subtract)
 * \return Pointer to the group of the polygons generated during tesselation
 */
 
GLS_EXPORT Group* Tessellate( Group* object_list, int tesstype, CreateGroupFunc, CreatePolyFunc, DecomposeFunc );
 
/** Called by application to perform a CSG operation on a character glyph
  * \param obj_list Pointer to group of objects to tessellate
  * \return  Pointer to the group of the polygons generated during tesselation.
  * The polygons will have OpenGl drawing primatives, e.g. TRIANGLE_FAN as 
  * generated by the tessellator
  */
GLS_EXPORT Group* TessellateGlyph( Group* obj_list, CreateGroupFunc, CreatePolyFunc, DecomposeFunc );
 
} // namespace disti
 
#endif