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Linux Cross Reference
Tina6/tina-tools/tinatool/draw/drawPaint_spline2.c

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  1 /**********
  2  *
  3  * Copyright (c) 2003, Division of Imaging Science and Biomedical Engineering,
  4  * University of Manchester, UK.  All rights reserved.
  5  * 
  6  * Redistribution and use in source and binary forms, with or without modification, 
  7  * are permitted provided that the following conditions are met:
  8  * 
  9  *   . Redistributions of source code must retain the above copyright notice, 
 10  *     this list of conditions and the following disclaimer.
 11  *    
 12  *   . Redistributions in binary form must reproduce the above copyright notice,
 13  *     this list of conditions and the following disclaimer in the documentation 
 14  *     and/or other materials provided with the distribution.
 15  * 
 16  *   . Neither the name of the University of Manchester nor the names of its
 17  *     contributors may be used to endorse or promote products derived from this 
 18  *     software without specific prior written permission.
 19  * 
 20  * 
 21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 31  * POSSIBILITY OF SUCH DAMAGE.
 32  *
 33  **********
 34  *
 35  * Program :    TINA
 36  * File    :  $Source: /home/tina/cvs/tina-tools/tinatool/draw/drawPaint_spline2.c,v $
 37  * Date    :  $Date: 2007/02/15 01:55:50 $
 38  * Version :  $Revision: 1.3 $
 39  * CVS Id  :  $Id: drawPaint_spline2.c,v 1.3 2007/02/15 01:55:50 paul Exp $
 40  *
 41  * Author  : Legacy TINA
 42  *
 43  * Notes :
 44  *
 45  *********
 46 */
 47 
 48 #include "drawPaint_spline2.h"
 49 
 50 #if HAVE_CONFIG_H
 51   #include <config.h>
 52 #endif
 53 
 54 #include <tina/sys/sysDef.h>
 55 #include <tina/math/mathDef.h>
 56 #include <tina/math/mathPro.h>
 57 #include <tina/geometry/geomDef.h>
 58 #include <tinatool/draw/draw_TvDef.h>
 59 #include <tinatool/draw/draw_TvPro.h>
 60 #include <tinatool/draw/drawPaint_curve.h>
 61 
 62 static Ipos spline2_proj2(Tv * tv, Spline2 * spline, double t)
 63 {
 64     return (tv_proj2(tv, spline2_eval(spline, t)));
 65 }
 66 
 67 void spline2_draw(Tv * tv, Spline2 * spline)
 68 {
 69     double t1 = 0.0, t2;
 70 
 71     if (spline == NULL)
 72         return;
 73     switch (spline->type)
 74     {
 75         case SPLINE_NATURAL:
 76         case SPLINE_TANGENT:
 77             t2 = spline->n - 1.0;
 78             break;
 79         case SPLINE_PERIODIC:
 80             t2 = spline->n;
 81             break;
 82         default:
 83             return;
 84     }
 85     curve_draw(tv, spline2_proj2, spline, t1, t2);
 86 }
 87 
 88 void spline2_draw_points(Tv * tv, Spline2 * spline)
 89 {
 90     int i, n;
 91     Vec2 p;
 92 
 93     if (spline == NULL)
 94         return;
 95     n = spline->n;
 96     for (i = 0; i < n; i++)
 97     {
 98         p = spline2_eval(spline, (double) i);
 99         tv_bigdot2(tv, p, 2);
100     }
101 }
102 
103 void spline_draw(Tv * tv, Spline2 * spline)
104 {
105     spline2_draw(tv, spline);
106     spline2_draw_points(tv, spline);
107 }
108 

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