1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>nevrax.org : docs</TITLE>
<LINK REL=stylesheet TYPE="text/css" HREF="/inc/css/nevrax.css">
<link href="doxygen.css" rel="stylesheet" type="text/css">
</HEAD>
<BODY MARGINHEIGHT="0" MARGINWIDTH="0">
<!-- uplinks -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR>
<TD WIDTH=16><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD WIDTH=140 BGCOLOR=#dddddd><IMG SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD WIDTH=16><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF=><b>Home</B></FONT></A> </TD>
<TD><IMG width=6 height=14 SRC="/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF=><b>nevrax.com</B></FONT></A> </TD>
</TR>
</TABLE>
<!-- banner Nevrax -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0 WIDTH=100%>
<TR><TD BGCOLOR="#000000" BACKGROUND="/inc/img/black_banner.jpg"><A HREF=""><IMG SRC="/inc/img/nevrax.gif" WIDTH="170" HEIGHT="45" BORDER=0 ALT="Nevrax" ></A></TD></TR>
</TABLE>
<!-- main table -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0 height=100%>
<TR>
<TD WIDTH=16><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="10" BORDER=0 ALT=""></TD>
<TD WIDTH=140 BGCOLOR=#dddddd VALIGN=TOP ALIGN=middle><IMG SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">
<!------ Begin Box ------>
<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0 BGCOLOR=black><TR><TD><TABLE border=0 cellspacing=2 cellpadding=0 width=120><tr><TD ALIGN=middle bgcolor=black>
<FONT COLOR=white FACE="sans-serif"><B>Nevrax.org</B></FONT></TD></TR><tr><td colspan=2 bgcolor=#FFFFFF>
<TABLE cellspacing=0 cellpadding=1 border=0>
<tr><td ALIGN=middle><a class='linkbox' href="/news/" TITLE="Rubrique news"><img width=13 height=15 hspace=5 border=0 src=/inc/img/picto-news.gif ALT=#></A></td><td><a class='linkbox' href="/news/" TITLE="News">News</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/mail/" TITLE="Rubrique mail"><img width=15 height=11 hspace=5 border=0 src=/inc/img/picto-mail.gif ALT=#></A></td><td><a class='linkbox' href="/mail/" TITLE="Mailing list archive">Mailing-list</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/docs/" TITLE="Rubrique docs"><img width=14 height=16 hspace=5 border=0 src=/inc/img/picto-docs.gif ALT=#></A></td><td><a class='linkbox' href="/docs/" TITLE="Documentation">Documentation</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/cvs/" TITLE="Rubrique cvs"><img width=13 height=17 hspace=5 border=0 src=/inc/img/picto-cvs.gif ALT=#></A></td><td><a class='linkbox' href="/cvs/" TITLE="CVS Web">CVS</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/bugs/" TITLE="Rubrique bugs"><img width=20 height=16 hspace=5 border=0 src=/inc/img/picto-bugs.gif ALT=#></A></td><td><a class='linkbox' href="/bugs/" TITLE="Bugtracking">Bugs</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="/GPL.php3" TITLE="Rubrique license"><img width=18 height=12 hspace=5 border=0 src=/inc/img/picto-gpl.gif ALT=#></A></td><td><a class='linkbox' href="/GPL.php3" TITLE="License">License</a></td></tr>
</TABLE>
</TD></TR></TABLE></TD></TR></TABLE>
<!------ End Box ------>
</TD>
<TD WIDTH=15><IMG SRC="/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD ALIGN=left valign=top><IMG SRC="/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">
<!-- title -->
<TABLE background="/inc/img/redline.gif" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td>
<A HREF="/docs/"><img src="/inc/img/t_docs.gif" ALT="Docs" HEIGHT=20 BORDER=0></A>
</td><td><IMG SRC="/inc/img/pixel.gif" WIDTH="1" HEIGHT="1" BORDER=0 ALT="">
</td></tr></table>
<!-- block -->
<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="/inc/img/reddots.gif"></TD>
<TD><B>Documentation</B></TD>
<TD ALIGN=RIGHT> </td>
</tr></table>
<!-- Generated by Doxygen 1.2.14 -->
<center>
<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:/cgi-bin/nel-search.cgi" href="/cgi-bin/nel-search.cgi">Search</a> </center>
<hr><h1>edge_collide.h</h1><a href="edge__collide_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026 <font class="preprocessor">#ifndef NL_EDGE_COLLIDE_H</font>
00027 <font class="preprocessor"></font><font class="preprocessor">#define NL_EDGE_COLLIDE_H</font>
00028 <font class="preprocessor"></font>
00029 <font class="preprocessor">#include "<a class="code" href="types__nl_8h.html">nel/misc/types_nl.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="vector__2f_8h.html">nel/misc/vector_2f.h</a>"</font>
00031
00032
00033 <font class="keyword">namespace </font>NLPACS
00034 {
00035
00036
00037 <font class="keyword">using</font> <a class="code" href="classNLMISC_1_1CVector2f.html">NLMISC::CVector2f</a>;
00038
00039
00040
00041 <font class="comment">// ***************************************************************************</font>
<a name="l00048"></a><a class="code" href="classNLPACS_1_1CInt128.html">00048</a> <font class="comment"></font><font class="keyword">class </font>CInt128
00049 {
00050 <font class="keyword">public</font>:
<a name="l00051"></a><a class="code" href="classNLPACS_1_1CInt128.html#m0">00051</a> <a class="code" href="types__nl_8h.html#a10">sint64</a> <a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a>;
<a name="l00052"></a><a class="code" href="classNLPACS_1_1CInt128.html#m1">00052</a> <a class="code" href="types__nl_8h.html#a10">sint64</a> <a class="code" href="classNLPACS_1_1CInt128.html#m1">Low</a>;
00053
00054 <font class="keyword">public</font>:
00055
<a name="l00057"></a><a class="code" href="classNLPACS_1_1CInt128.html#a0">00057</a> <font class="keywordtype">void</font> <a class="code" href="classNLPACS_1_1CInt128.html#a0">setMul</a>(<a class="code" href="types__nl_8h.html#a10">sint64</a> a, <a class="code" href="types__nl_8h.html#a10">sint64</a> b)
00058 {
00059 <font class="comment">// reset and backup sign.</font>
00060 <a class="code" href="types__nl_8h.html#a12">sint</a> sgn=0;
00061 <font class="keywordflow">if</font>(a<0)
00062 sgn++, a=-a;
00063 <font class="keywordflow">if</font>(b<0)
00064 sgn--, b=-b;
00065
00066
00067 <font class="comment">// compute unsigned version.</font>
00068 <a class="code" href="types__nl_8h.html#a11">uint64</a> high, low, hl1, hl2, oldLow;
00069 <a class="code" href="types__nl_8h.html#a9">uint32</a> mask32= 0xFFFFFFFF;
00070 high= (a>>32) * (b>>32);
00071 low= (a&mask32) * (b&mask32);
00072 hl1= (a&mask32) * (b>>32);
00073 hl2= (a>>32) * (b&mask32);
00074 <font class="comment">// add/adc hl1.</font>
00075 oldLow= low;
00076 low+= (hl1&mask32) << 32;
00077 <font class="keywordflow">if</font>(low<oldLow)
00078 high++;
00079 high+= (hl1>>32);
00080 <font class="comment">// add/adc hl2.</font>
00081 oldLow= low;
00082 low+= (hl2&mask32) << 32;
00083 <font class="keywordflow">if</font>(low<oldLow)
00084 high++;
00085 high+= (hl2>>32);
00086
00087
00088 <font class="comment">// extend with sign.</font>
00089 <a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a>= high;
00090 <a class="code" href="classNLPACS_1_1CInt128.html#m1">Low</a>= low;
00091 <font class="keywordflow">if</font>(sgn!=0)
00092 {
00093 <a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a>= -<a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a>;
00094 <a class="code" href="classNLPACS_1_1CInt128.html#m1">Low</a>= -<a class="code" href="classNLPACS_1_1CInt128.html#m1">Low</a>;
00095 }
00096 }
00097
<a name="l00099"></a><a class="code" href="classNLPACS_1_1CInt128.html#a1">00099</a> <font class="keywordtype">bool</font> <a class="code" href="classNLPACS_1_1CInt128.html#a1">operator<</a>(<font class="keyword">const</font> CInt128 &o)<font class="keyword"> const</font>
00100 <font class="keyword"> </font>{
00101 <font class="keywordflow">if</font>(<a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a>!=o.High)
00102 <font class="keywordflow">return</font> <a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a><o.High;
00103 <font class="keywordflow">else</font>
00104 <font class="keywordflow">return</font> <a class="code" href="classNLPACS_1_1CInt128.html#m1">Low</a><o.Low;
00105 }
00106
<a name="l00108"></a><a class="code" href="classNLPACS_1_1CInt128.html#a2">00108</a> <font class="keywordtype">bool</font> <a class="code" href="classNLPACS_1_1CInt128.html#a2">operator==</a>(<font class="keyword">const</font> CInt128 &o)<font class="keyword"> const</font>
00109 <font class="keyword"> </font>{
00110 <font class="keywordflow">return</font> <a class="code" href="classNLPACS_1_1CInt128.html#m0">High</a>==o.High && <a class="code" href="classNLPACS_1_1CInt128.html#m1">Low</a>==o.Low;
00111 }
00112
00113 };
00114
00115
00116 <font class="comment">// ***************************************************************************</font>
<a name="l00123"></a><a class="code" href="classNLPACS_1_1CRational64.html">00123</a> <font class="comment"></font><font class="keyword">class </font>CRational64
00124 {
00125 <font class="keyword">public</font>:
<a name="l00127"></a><a class="code" href="classNLPACS_1_1CRational64.html#m0">00127</a> <a class="code" href="types__nl_8h.html#a10">sint64</a> <a class="code" href="classNLPACS_1_1CRational64.html#m0">Numerator</a>;
<a name="l00129"></a><a class="code" href="classNLPACS_1_1CRational64.html#m1">00129</a> <a class="code" href="types__nl_8h.html#a10">sint64</a> <a class="code" href="classNLPACS_1_1CRational64.html#m1">Denominator</a>;
00130
00131
00132 <font class="keyword">public</font>:
00133
<a name="l00134"></a><a class="code" href="classNLPACS_1_1CRational64.html#a0">00134</a> <a class="code" href="classNLPACS_1_1CRational64.html#a0">CRational64</a>() {}
<a name="l00135"></a><a class="code" href="classNLPACS_1_1CRational64.html#a1">00135</a> <a class="code" href="classNLPACS_1_1CRational64.html#a0">CRational64</a>(<a class="code" href="types__nl_8h.html#a10">sint64</a> a) : <a class="code" href="classNLPACS_1_1CRational64.html#m0">Numerator</a>(a), <a class="code" href="classNLPACS_1_1CRational64.html#m1">Denominator</a>(1) {}
<a name="l00136"></a><a class="code" href="classNLPACS_1_1CRational64.html#a2">00136</a> <a class="code" href="classNLPACS_1_1CRational64.html#a0">CRational64</a>(<a class="code" href="types__nl_8h.html#a10">sint64</a> num, <a class="code" href="types__nl_8h.html#a10">sint64</a> den)
00137 {
00138 <font class="keywordflow">if</font>(den>0)
00139 {
00140 <a class="code" href="classNLPACS_1_1CRational64.html#m0">Numerator</a>= num;
00141 <a class="code" href="classNLPACS_1_1CRational64.html#m1">Denominator</a>= den;
00142 }
00143 <font class="keywordflow">else</font>
00144 {
00145 <a class="code" href="classNLPACS_1_1CRational64.html#m0">Numerator</a>= -num;
00146 <a class="code" href="classNLPACS_1_1CRational64.html#m1">Denominator</a>= -den;
00147 }
00148 }
00149
<a name="l00151"></a><a class="code" href="classNLPACS_1_1CRational64.html#a3">00151</a> <font class="keywordtype">bool</font> <a class="code" href="classNLPACS_1_1CRational64.html#a3">operator<</a>(<font class="keyword">const</font> <a class="code" href="classNLPACS_1_1CRational64.html#a0">CRational64</a> &o)<font class="keyword"> const</font>
00152 <font class="keyword"> </font>{
00153 CInt128 n0, n1;
00154 <font class="comment">// a/b < c/d <=> a*d < c*b</font>
00155 n0.setMul(<a class="code" href="classNLPACS_1_1CRational64.html#m0">Numerator</a>, o.Denominator);
00156 n1.setMul(o.Numerator, <a class="code" href="classNLPACS_1_1CRational64.html#m1">Denominator</a>);
00157 <font class="keywordflow">return</font> n0<n1;
00158 }
00159
<a name="l00161"></a><a class="code" href="classNLPACS_1_1CRational64.html#a4">00161</a> <font class="keywordtype">bool</font> <a class="code" href="classNLPACS_1_1CRational64.html#a4">operator==</a>(<font class="keyword">const</font> <a class="code" href="classNLPACS_1_1CRational64.html#a0">CRational64</a> &o)<font class="keyword"> const</font>
00162 <font class="keyword"> </font>{
00163 CInt128 n0, n1;
00164 <font class="comment">// a/b == c/d <=> a*d == c*b</font>
00165 n0.setMul(<a class="code" href="classNLPACS_1_1CRational64.html#m0">Numerator</a>, o.Denominator);
00166 n1.setMul(o.Numerator, <a class="code" href="classNLPACS_1_1CRational64.html#m1">Denominator</a>);
00167 <font class="keywordflow">return</font> n0==n1;
00168 }
00169
00170 };
00171
00172
00173 <font class="comment">// ***************************************************************************</font>
<a name="l00180"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html">00180</a> <font class="comment"></font><font class="keyword">class </font>CEdgeCollide
00181 {
00182 <font class="keyword">public</font>:
<a name="l00183"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6">00183</a> <font class="keyword">enum</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6">TPointMoveProblem</a> {<a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6s0">ParallelEdges</a>=0, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6s1">StartOnEdge</a>, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6s2">StopOnEdge</a>, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6s3">TraverseEndPoint</a>, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6s4">EdgeNull</a>, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6s5">PointMoveProblemCount</a>};
00184
00185
00186 <font class="keyword">public</font>:
<a name="l00187"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html#m0">00187</a> CVector2f <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m0">P0</a>;
<a name="l00188"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html#m1">00188</a> CVector2f <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m1">P1</a>;
<a name="l00189"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html#m3">00189</a> CVector2f <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m2">Dir</a>, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m3">Norm</a>;
<a name="l00190"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html#m5">00190</a> <font class="keywordtype">float</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m4">A0</a>, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m5">A1</a>;
<a name="l00191"></a><a class="code" href="classNLPACS_1_1CEdgeCollide.html#m6">00191</a> <font class="keywordtype">float</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#m6">C</a>;
00192
00193 <font class="keyword">public</font>:
00194
00195 <font class="keywordtype">void</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#a0">make</a>(<font class="keyword">const</font> CVector2f &p0, <font class="keyword">const</font> CVector2f &p1);
00196
00204 CRational64 <a class="code" href="classNLPACS_1_1CEdgeCollide.html#a1">testPointMove</a>(<font class="keyword">const</font> CVector2f &start, <font class="keyword">const</font> CVector2f &end, <a class="code" href="classNLPACS_1_1CEdgeCollide.html#s6">TPointMoveProblem</a> &moveBug);
00209 <font class="keywordtype">float</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#a2">testCircleMove</a>(<font class="keyword">const</font> CVector2f &start, <font class="keyword">const</font> CVector2f &delta, <font class="keywordtype">float</font> radius, CVector2f &normal);
00215 <font class="keywordtype">float</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#a3">testBBoxMove</a>(<font class="keyword">const</font> CVector2f &start, <font class="keyword">const</font> CVector2f &delta, <font class="keyword">const</font> CVector2f bbox[4], CVector2f &normal);
00220 <font class="keywordtype">bool</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#a4">testBBoxCollide</a>(<font class="keyword">const</font> CVector2f bbox[4]);
00221
00222
00223 <font class="comment">// ****************************</font>
00224 <font class="keyword">private</font>:
00225
00229 <font class="keywordtype">bool</font> <a class="code" href="classNLPACS_1_1CEdgeCollide.html#c0">testEdgeMove</a>(<font class="keyword">const</font> CVector2f &q0, <font class="keyword">const</font> CVector2f &q1, <font class="keyword">const</font> CVector2f &delta, <font class="keywordtype">float</font> &tMin, <font class="keywordtype">float</font> &tMax, <font class="keywordtype">bool</font> &normalOnBox);
00230
00231 };
00232
00233
00234
00235 } <font class="comment">// NLPACS</font>
00236
00237
00238 <font class="preprocessor">#endif // NL_EDGE_COLLIDE_H</font>
00239 <font class="preprocessor"></font>
00240 <font class="comment">/* End of edge_collide.h */</font>
</pre></div>
<!-- footer -->
<BR><FONT Size=+5> </FONT>
</TD>
<TD WIDTH=15><IMG SRC=/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD>
</TR>
</TABLE>
</BODY>
</HTML>
|
