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94 lines
3 KiB
C
94 lines
3 KiB
C
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/*
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** SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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** Copyright (C) [dates of first publication] Silicon Graphics, Inc.
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** All Rights Reserved.
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**
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** Permission is hereby granted, free of charge, to any person obtaining a copy
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** of this software and associated documentation files (the "Software"), to deal
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** in the Software without restriction, including without limitation the rights
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** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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** of the Software, and to permit persons to whom the Software is furnished to do so,
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** subject to the following conditions:
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**
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** The above copyright notice including the dates of first publication and either this
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** permission notice or a reference to http://oss.sgi.com/projects/FreeB/ shall be
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** included in all copies or substantial portions of the Software.
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**
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** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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** INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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** PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL SILICON GRAPHICS, INC.
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** BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
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** OR OTHER DEALINGS IN THE SOFTWARE.
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**
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** Except as contained in this notice, the name of Silicon Graphics, Inc. shall not
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** be used in advertising or otherwise to promote the sale, use or other dealings in
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** this Software without prior written authorization from Silicon Graphics, Inc.
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*/
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/*
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** Author: Eric Veach, July 1994.
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*/
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#ifndef TESS_H
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#define TESS_H
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#include <setjmp.h>
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#include "bucketalloc.h"
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#include "mesh.h"
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#include "dict.h"
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#include "priorityq.h"
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#include "../Include/tesselator.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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//typedef struct TESStesselator TESStesselator;
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struct TESStesselator {
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/*** state needed for collecting the input data ***/
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TESSmesh *mesh; /* stores the input contours, and eventually
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the tessellation itself */
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int outOfMemory;
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/*** state needed for projecting onto the sweep plane ***/
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TESSreal normal[3]; /* user-specified normal (if provided) */
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TESSreal sUnit[3]; /* unit vector in s-direction (debugging) */
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TESSreal tUnit[3]; /* unit vector in t-direction (debugging) */
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TESSreal bmin[2];
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TESSreal bmax[2];
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int processCDT; /* option to run Constrained Delayney pass. */
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int reverseContours; /* tessAddContour() will treat CCW contours as CW and vice versa */
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/*** state needed for the line sweep ***/
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int windingRule; /* rule for determining polygon interior */
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Dict *dict; /* edge dictionary for sweep line */
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PriorityQ *pq; /* priority queue of vertex events */
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TESSvertex *event; /* current sweep event being processed */
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struct BucketAlloc* regionPool;
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TESSindex vertexIndexCounter;
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TESSreal *vertices;
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TESSindex *vertexIndices;
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int vertexCount;
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TESSindex *elements;
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int elementCount;
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TESSalloc alloc;
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jmp_buf env; /* place to jump to when memAllocs fail */
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};
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#ifdef __cplusplus
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};
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#endif
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#endif
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