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Unidiff
-rw-r--r--README21
-rw-r--r--TODO3
-rw-r--r--src/Makefile.am27
-rw-r--r--src/controller/actions/pan.c57
-rw-r--r--src/controller/actions/pan.h2
-rw-r--r--src/controller/actions/sel_save.c2
-rw-r--r--src/controller/callbacks/keyboard.c2
-rw-r--r--src/controller/callbacks/mouse.c30
-rw-r--r--src/controller/callbacks/mouse_motion.c19
-rw-r--r--src/controller/callbacks/mouse_motion.h9
-rw-r--r--src/model/base.c417
-rw-r--r--src/model/base.h9
-rw-r--r--src/model/coordinates.h11
-rw-r--r--src/model/data/base.sqc (renamed from src/model/base.sqc)6
-rw-r--r--src/model/selection_info.h37
-rw-r--r--src/model/selection_info_init.c14
-rw-r--r--src/model/selection_info_init.h8
-rw-r--r--src/model/selection_purposes.h17
-rw-r--r--src/model/state/pan_info_init.h8
-rw-r--r--src/model/state/state.h (renamed from src/model/state.h)3
-rw-r--r--src/model/state/zoom_info.h (renamed from src/model/zoom_info.h)0
-rw-r--r--src/model/state/zoom_info_init.c (renamed from src/model/zoom_info_init.c)0
-rw-r--r--src/model/state/zoom_info_init.h (renamed from src/model/zoom_info_init.h)0
-rw-r--r--src/view/geometry.c8
-rw-r--r--src/view/init.c12
-rw-r--r--src/view/state0.h2
-rw-r--r--src/view/view.c4
27 files changed, 179 insertions, 549 deletions
diff --git a/src/model/data/base.sqc b/src/model/data/base.sqc
new file mode 100644
index 0000000..ad1c395
--- a/dev/null
+++ b/src/model/data/base.sqc
@@ -0,0 +1,185 @@
1/* I seem to need this for glGenBuffers as per
2 http://www.gamedev.net/community/forums/topic.asp?topic_id=422358 */
3#define GL_GLEXT_PROTOTYPES
4
5#include "base.h"
6#include "../../view/state0.h"
7#include "../../util/check_error.h"
8#include <GL/glut.h>
9#include <string.h>
10#include <stdlib.h>
11#include "sqlca.h"
12extern struct sqlca sqlca;
13
14/*
15 * A simple alias to make the code more readable.
16 */
17#define S state0
18
19void
20base (void)
21{
22 /*
23 * This implementation can be improved by mapping the video memory
24 * directly rather than loading into system memory and then copying
25 * into video memory.
26 */
27
28 /*
29 * db2dclgn -d exp004 -t coordinates
30 */
31 EXEC SQL BEGIN DECLARE SECTION;
32 EXEC SQL INCLUDE 'model/data/coordinates.h';
33 sqlint32 rows;
34 EXEC SQL END DECLARE SECTION;
35
36 /* Determine how many nodes have coordinates assigned to them. */
37 EXEC SQL SELECT COUNT (*) INTO:rows FROM coordinates;
38
39 /* Free any existing coordinates and allocate memory to store the
40 new values. */
41 S.rows = rows;
42
43 free (S.selection.set);
44 S.selection.set = calloc (rows, sizeof (bool));
45
46 free (S.gi_data);
47 S.gi_data = calloc (rows, sizeof (char) * 20);
48
49 free (S.base_vertices_data);
50 S.base_vertices_data = calloc (rows, sizeof (float) * 2);
51
52 free (S.base_colors_data);
53 S.base_colors_data = calloc (rows, sizeof (float) * 4);
54
55 EXEC SQL DECLARE c2 CURSOR FOR SELECT *FROM coordinates;
56
57 EXEC SQL OPEN c2;
58
59 /*
60 * Initialize the bounding box of the points.
61 */
62 S.bb.min_x = 0.0;
63 S.bb.max_x = 0.0;
64 S.bb.min_y = 0.0;
65 S.bb.max_y = 0.0;
66
67 EXEC SQL FETCH c2 INTO:coordinates;
68 while (sqlca.sqlcode != 100)
69 {
70 int i = coordinates.coord_id - 1;
71
72 strncpy (S.gi_data + i, coordinates.gi.data, sizeof (S.gi_data[i]));
73
74 float *v = S.base_vertices_data + (i * 2);
75 *v = coordinates.x;
76 v++;
77 *v = coordinates.y;
78
79 v = S.base_vertices_data + (i * 2);
80 if (*v < S.bb.min_x)
81 S.bb.min_x = *v;
82 if (*v > S.bb.max_x)
83 S.bb.max_x = *v;
84
85 v++;
86 if (*v < S.bb.min_y)
87 S.bb.min_y = *v;
88 if (*v > S.bb.max_y)
89 S.bb.max_y = *v;
90
91 /*
92 * Deselected by default.
93 */
94 S.selection.set[i] = false;
95
96 float *c = S.base_colors_data + (i * 4);
97 *c = DEFAULT_COLOR_R;
98 c++;
99 *c = DEFAULT_COLOR_G;
100 c++;
101 *c = DEFAULT_COLOR_B;
102 c++;
103 *c = DEFAULT_COLOR_A;
104
105 EXEC SQL FETCH c2 INTO:coordinates;
106 }
107
108 EXEC SQL CLOSE c2;
109
110 EXEC SQL COMMIT;
111
112 /*
113 * Find the largest axis and use it to setup the projection. This
114 * is done to preserve the aspect ratio. The aspect ratio should be
115 * preserved since relative distance is a meaningful indicator in
116 * the map.
117 */
118
119 // Min of min x or min y.
120 if (S.bb.min_x <= S.bb.min_y)
121 S.ortho_min = S.bb.min_x;
122 else
123 S.ortho_min = S.bb.min_y;
124 S.ortho_min--;
125
126 // Max of max x or max y.
127 if (S.bb.max_x >= S.bb.max_y)
128 S.ortho_max = S.bb.max_x;
129 else
130 S.ortho_max = S.bb.max_y;
131 S.ortho_max++;
132
133 // Invert the y coordinate to match up with the LGL Java viewer.
134 float *v = S.base_vertices_data;
135 for (int i = 0; i < S.rows; i++)
136 {
137 v++;
138 *v = S.ortho_max - *v;
139 v++;
140 }
141
142 // Move the origin (0,0) to the center of the data.
143 S.ortho_min = 0.0;
144 S.ortho_max = 0.0;
145
146 v = S.base_vertices_data;
147 for (int i = 0; i < S.rows; i++)
148 {
149 *v = *v - (0.5 * (S.bb.max_x - S.bb.min_x));
150
151 if (S.ortho_min > *v)
152 S.ortho_min = *v;
153
154 if (S.ortho_max < *v)
155 S.ortho_max = *v;
156
157 v++;
158
159 *v = *v - (0.5 * (S.bb.max_y - S.bb.min_y));
160
161 if (S.ortho_min > *v)
162 S.ortho_min = *v;
163
164 if (S.ortho_max < *v)
165 S.ortho_max = *v;
166
167 v++;
168 }
169
170 glGenBuffers (2, S.buffers);
171
172 glBindBuffer (GL_ARRAY_BUFFER, S.buffers[BASE_VERTICES]);
173 glVertexPointer (2, GL_FLOAT, 0, 0);
174 glBufferData (GL_ARRAY_BUFFER,
175 sizeof (S.base_vertices_data), S.base_vertices_data,
176 GL_STATIC_DRAW);
177
178 glBindBuffer (GL_ARRAY_BUFFER, S.buffers[BASE_COLORS]);
179 glColorPointer (4, GL_FLOAT, 0, 0);
180 glBufferData (GL_ARRAY_BUFFER,
181 sizeof (S.base_colors_data), S.base_colors_data,
182 GL_STATIC_DRAW);
183
184 return;
185}

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