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authorschodet2005-02-09 17:28:12 +0000
committerschodet2005-02-09 17:28:12 +0000
commit62626df3b22dcc8b75b39fac5deff7ba8c420c39 (patch)
tree707bc892ef9dadbbc940abf41ab335f5a956cd65 /2005/i/robert/src/utils
parent8cfe3413142a349802cc7daf7261a1bfa1cd1f5e (diff)
Ajout de fonctions utilitaires.
Diffstat (limited to '2005/i/robert/src/utils')
-rw-r--r--2005/i/robert/src/utils/hexa.cc113
-rw-r--r--2005/i/robert/src/utils/hexa.hh49
-rw-r--r--2005/i/robert/src/utils/mathutil.hh57
3 files changed, 219 insertions, 0 deletions
diff --git a/2005/i/robert/src/utils/hexa.cc b/2005/i/robert/src/utils/hexa.cc
new file mode 100644
index 0000000..d152f8f
--- /dev/null
+++ b/2005/i/robert/src/utils/hexa.cc
@@ -0,0 +1,113 @@
+// hexa.cc
+// robert - programme du robot 2005. {{{
+//
+// Copyright (C) 2005 Nicolas Schodet
+//
+// Robot APB Team/Efrei 2005.
+// Web: http://assos.efrei.fr/robot/
+// Email: robot AT efrei DOT fr
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+#include "hexa.hh"
+
+// Table de conversion en hexa.
+static const char *digit2hexTbl_ = "0123456789abcdef";
+
+// Table de conversion depuis l'hexa.
+#define hI hexInvalid
+static const int hex2digitTbl_[] =
+{
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 0-15 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 16-31 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 32-47 */
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,hI,hI,hI,hI,hI,hI, /* 48-63 */
+ hI,10,11,12,13,14,15,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 64-79 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 80-95 */
+ hI,10,11,12,13,14,15,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 96-111 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 112-127 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 128-143 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 144-159 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 160-175 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 176-191 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 192-207 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 208-223 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 224-239 */
+ hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI,hI, /* 240-255 */
+};
+
+/// Converti un caractère hexa (0-9a-f) en chiffre (0-15).
+int
+hex2digit (char c)
+{
+ return hex2digitTbl_[c];
+}
+
+/// Converti un chiffre (0-15) en hexa (0-9a-f).
+char
+digit2hex (int d)
+{
+ return digit2hexTbl_[d];
+}
+
+/// Décode un mot non-signé (1 octets).
+unsigned int
+hexUnsignedChar2int (const char *s)
+{
+ int h1 = hex2digit (s[0]);
+ int h0 = hex2digit (s[1]);
+ if (h1 == hexInvalid || h0 == hexInvalid)
+ return hexInvalid;
+ return (unsigned char) (h1 << 4 | h0);
+}
+
+/// Décode un mot signé (1 octets).
+int
+hexSignedChar2int (const char *s)
+{
+ int h1 = hex2digit (s[0]);
+ int h0 = hex2digit (s[1]);
+ if (h1 == hexInvalid || h0 == hexInvalid)
+ return hexInvalid;
+ return (signed char) (h1 << 4 | h0);
+}
+
+/// Décode un mot non-signé (2 octets).
+int
+hexUnsignedShort2int (const char *s)
+{
+ int h3 = hex2digit (s[0]);
+ int h2 = hex2digit (s[1]);
+ int h1 = hex2digit (s[2]);
+ int h0 = hex2digit (s[3]);
+ if (h3 == hexInvalid || h2 == hexInvalid || h1 == hexInvalid || h0 == hexInvalid)
+ return hexInvalid;
+ return (unsigned short) (h3 << 12 | h2 << 8 | h1 << 4 | h0);
+}
+
+/// Décode un mot signé (2 octets).
+int
+hexSignedShort2int (const char *s)
+{
+ int h3 = hex2digit (s[0]);
+ int h2 = hex2digit (s[1]);
+ int h1 = hex2digit (s[2]);
+ int h0 = hex2digit (s[3]);
+ if (h3 == hexInvalid || h2 == hexInvalid || h1 == hexInvalid || h0 == hexInvalid)
+ return hexInvalid;
+ return (short) (h3 << 12 | h2 << 8 | h1 << 4 | h0);
+}
+
diff --git a/2005/i/robert/src/utils/hexa.hh b/2005/i/robert/src/utils/hexa.hh
new file mode 100644
index 0000000..f7d3399
--- /dev/null
+++ b/2005/i/robert/src/utils/hexa.hh
@@ -0,0 +1,49 @@
+#ifndef hexa_hh
+#define hexa_hh
+// hexa.hh
+// robert - programme du robot 2005. {{{
+//
+// Copyright (C) 2005 Nicolas Schodet
+//
+// Robot APB Team/Efrei 2005.
+// Web: http://assos.efrei.fr/robot/
+// Email: robot AT efrei DOT fr
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+
+/// Constante retournée pour une valeur invalide.
+const int hexInvalid = 1 << 24;
+
+/// Converti un caractère hexa (0-9a-f) en chiffre (0-15).
+int hex2digit (char c);
+
+/// Converti un chiffre (0-15) en hexa (0-9a-f).
+char digit2hex (int d);
+
+/// Décode un mot non-signé (1 octets).
+unsigned int hexUnsignedChar2int (const char *s);
+
+/// Décode un mot signé (1 octets).
+int hexSignedChar2int (const char *s);
+
+/// Décode un mot non-signé (2 octets).
+int hexUnsignedShort2int (const char *s);
+
+/// Décode un mot signé (2 octets).
+int hexSignedShort2int (const char *s);
+
+#endif // hexa_hh
diff --git a/2005/i/robert/src/utils/mathutil.hh b/2005/i/robert/src/utils/mathutil.hh
new file mode 100644
index 0000000..d58cec3
--- /dev/null
+++ b/2005/i/robert/src/utils/mathutil.hh
@@ -0,0 +1,57 @@
+#ifndef mathutil_hh
+#define mathutil_hh
+// mathutil.hh
+// robert - programme du robot 2005. {{{
+//
+// Copyright (C) 2005 Nicolas Schodet
+//
+// Robot APB Team/Efrei 2005.
+// Web: http://assos.efrei.fr/robot/
+// Email: robot AT efrei DOT fr
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+#include <cmath>
+
+/// Normalise l'angle entre -pi et +pi.
+double
+angleNorm (double a);
+
+/// Converti en coordonnées polaires.
+void
+toPolar (double x, double y, double &r, double &a);
+
+/// Normalise l'angle en [-pi..+pi).
+inline double
+angleNorm (double a)
+{
+ while (a >= M_PI)
+ a -= 2.0 * M_PI;
+ while (a < -M_PI)
+ a += 2.0 * M_PI;
+ return a;
+}
+
+/// Converti en coordonnées polaires.
+inline void
+toPolar (double x, double y, double &r, double &a)
+{
+ // Rayon.
+ r = sqrt (x * x + y * y);
+ a = y > 0 ? acos (x / r) : -acos (x / r);
+}
+
+#endif // mathutil_hh