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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
|
//
// "$Id: png2fti.cxx 1291 2004-06-14 16:03:10Z mike $"
//
// Simple utility which converts a PNG or XPM icon file to a 3D SGI FTI
// icon file.
//
// Copyright 2004 by Michael Sweet.
//
#include <stdio.h>
#include <string.h>
#include <FL/Fl_Shared_Image.H>
//#define DEBUG
#ifdef DEBUG
# define DEBUG_printf(x) printf x
#else
# define DEBUG_printf(x)
#endif // DEBUG
//
// 'print_vertex()' - Print an image vertex...
//
void
print_vertex(Fl_Shared_Image *img, // I - Shared image
int x, // I - X position in image
int y, // I - Y position in image
const float matrix[2][3],
// I - Transform matrix
float &xmin, // IO - Minimum X
float &ymin, // IO - Minimum Y
float &xmax, // IO - Maximum X
float &ymax) // IO - Maximum Y
{
float fx, fy; // Floating point X/Y
float tx, ty; // Transformed x/y
// Map integer coords to floating point...
fx = 100.0f * (float)x / (float)(img->w() - 1);
fy = 100.0f - 100.0f * (float)y / (float)(img->h() - 1);
// Project x, y in image space to 3D using the current matrix...
tx = matrix[0][0] * fx + matrix[0][1] * fy + matrix[0][2];
ty = matrix[1][0] * fx + matrix[1][1] * fy + matrix[1][2];
// Update the bounding box...
if (tx < xmin)
xmin = tx;
if (tx > xmax)
xmax = tx;
if (ty < ymin)
ymin = ty;
if (ty > ymax)
ymax = ty;
// Write the current vertex...
DEBUG_printf(("\t# %d,%d\n", x, y));
printf("\tvertex(%.2f, %.2f);\n", tx, ty);
}
//
// 'main()' - Convert a PNG image to FTI format...
//
int // O - Exit status
main(int argc, // I - Number of command-line args
char *argv[]) // I - Command-line arguments
{
Fl_Shared_Image *img; // PNG icon
int x, y; // X & Y in image
int startx, // Starting X in image
endy, // Ending Y in image
tempy; // Current Y in image
int c, // Current color
temp; // Temporary color
const uchar *data; // Pointer into image
float xmin, xmax, // Bounding box
ymin, ymax;
float matrix[2][3]; // Transform matrix
int lines[256][768],// Lines (color, startx, endx)
*lineptr; // Pointer into line
int polys[256]; // Number of polygons per line
int did_poly; // Non-zero if we did a polygon
if (argc != 3 ||
(strcmp(argv[1], "-c") && strcmp(argv[1], "-d") && strcmp(argv[1], "-o")))
{
puts("Usage: png2fti -[cdo] filename.png >filename.fti");
puts(" -c = closed exec");
puts(" -d = document");
puts(" -o = open exec");
return (1);
}
fl_register_images();
img = Fl_Shared_Image::get(argv[2]);
if (!img || !img->count() || !img->w() || !img->h())
{
printf("Unable to open image file \"%s\"!\n", argv[2]);
return (1);
}
if (img->count() != 1)
{
puts("Sorry, indexed images are not supported at this time.");
return (1);
}
xmin = 1000.0f;
xmax = -1000.0f;
ymin = 1000.0f;
ymax = -1000.0f;
printf("# Converted using \"png2fti %s %s\"...\n\n", argv[1], argv[2]);
// Create the proper transform for the specified type of icon...
switch (argv[1][1])
{
case 'c' : // Closed exec
matrix[0][0] = 1.0f / 3.0f;
matrix[0][1] = -1.0f / 3.0f;
matrix[0][2] = 49.0f;
matrix[1][0] = 0.5f / 3.0f;
matrix[1][1] = 0.5f / 3.0f;
matrix[1][2] = 14.5f;
break;
case 'd' : // Document
matrix[0][0] = 1.0f / 3.0f;
matrix[0][1] = 0.0f;
matrix[0][2] = 42.5f;
matrix[1][0] = 0.5f / 3.0f;
matrix[1][1] = 1.0f / 3.0f;
matrix[1][2] = 26.0f;
break;
case 'o' : // Open exec
matrix[0][0] = 1.0f / 3.0f;
matrix[0][1] = 0.0f;
matrix[0][2] = 14.0f;
matrix[1][0] = 0.5f / 3.0f;
matrix[1][1] = 1.0f / 3.0f;
matrix[1][2] = 38.0f;
break;
}
// Loop through grayscale or RGB image and add polys...
for (y = 0, data = (const uchar *)(*(img->data())); y < img->h(); y ++, data += img->ld())
{
polys[y] = 0;
lineptr = lines[y];
for (x = 0, startx = 0, c = -1; x < img->w(); x ++, data += img->d())
{
switch (img->d())
{
case 2 :
if (data[1] < 128)
{
temp = -1;
break;
}
case 1 :
temp = fl_gray_ramp(data[0] * (FL_NUM_GRAY - 1) / 255);
break;
default :
if (data[3] < 128)
{
temp = -1;
break;
}
case 3 :
if (data[0] == data[1] && data[1] == data[2])
temp = fl_gray_ramp(data[0] * (FL_NUM_GRAY - 1) / 255);
else
temp = fl_color_cube(data[0] * (FL_NUM_RED - 1) / 255,
data[1] * (FL_NUM_GREEN - 1) / 255,
data[2] * (FL_NUM_BLUE - 1) / 255);
break;
}
if (temp != c)
{
if (c != -1)
{
polys[y] ++;
*lineptr++ = c;
*lineptr++ = startx;
*lineptr++ = x;
}
c = temp;
startx = x;
}
}
if (x > startx && c != -1)
{
polys[y] ++;
*lineptr++ = c;
*lineptr++ = startx;
*lineptr++ = x;
}
}
#if 1
// Now loop through the polygons and find polys with a common prefix color
for (did_poly = 1; did_poly;)
{
for (y = 0, did_poly = 0; y < img->h();)
{
if (polys[y] == 0)
{
y ++;
continue;
}
fprintf(stderr, "\ry = %d ", y);
fflush(stderr);
did_poly = 1;
for (endy = y + 1;
endy < (img->h() - 1) && polys[endy] > 0 && lines[y][0] == lines[endy][0];
endy ++)
if (lines[y][1] > lines[endy][2] ||
lines[y][2] < lines[endy][1])
break;
if ((endy - y) == 1)
{
// Just do a single row...
DEBUG_printf(("# %d,%d to %d,%d...\n", lines[y][1], y, lines[y][2],
y + 1));
printf("color(%d);\n", lines[y][0]);
puts("bgnoutlinepolygon();");
print_vertex(img, lines[y][1], y, matrix, xmin, ymin, xmax, ymax);
print_vertex(img, lines[y][2], y, matrix, xmin, ymin, xmax, ymax);
print_vertex(img, lines[y][2], y + 1, matrix, xmin, ymin, xmax, ymax);
print_vertex(img, lines[y][1], y + 1, matrix, xmin, ymin, xmax, ymax);
printf("endoutlinepolygon(%d);\n", lines[y][0]);
}
else
{
// Combine multiple rows...
#ifdef DEBUG
for (tempy = y; tempy < endy; tempy ++)
printf("# %d,%d to %d,%d...\n", lines[tempy][1], tempy,
lines[tempy][2], tempy + 1);
#endif // DEBUG
printf("color(%d);\n", lines[y][0]);
puts("bgnpolygon();");
print_vertex(img, lines[y][1], y, matrix, xmin, ymin, xmax, ymax);
for (tempy = y; tempy < endy; tempy ++)
{
print_vertex(img, lines[tempy][2], tempy, matrix, xmin, ymin, xmax, ymax);
while (tempy < (endy - 2) && lines[tempy][2] == lines[tempy + 1][2])
tempy ++;
if (tempy >= (endy - 1) || lines[tempy][2] != lines[tempy + 1][2])
print_vertex(img, lines[tempy][2], tempy + 1, matrix, xmin, ymin, xmax, ymax);
}
for (tempy = endy - 1; tempy >= y; tempy --)
{
print_vertex(img, lines[tempy][1], tempy + 1, matrix, xmin, ymin, xmax, ymax);
while (tempy > y && lines[tempy][1] == lines[tempy - 1][1])
tempy --;
if (tempy > y && lines[tempy][1] != lines[tempy - 1][1])
print_vertex(img, lines[tempy][1], tempy, matrix, xmin, ymin, xmax, ymax);
}
puts("endpolygon();");
}
for (tempy = y; tempy < endy; tempy ++)
{
polys[tempy] --;
if (polys[tempy] > 0)
memmove(lines[tempy], lines[tempy] + 3, 3 * polys[tempy] * sizeof(int));
}
y = endy;
}
}
#else
for (y = 0; y < img->h(); y ++)
{
for (x = polys[y], lineptr = lines[y]; x > 0; x --, lineptr += 3)
{
printf("color(%d);\n", lineptr[0]);
puts("bgnpolygon();");
print_vertex(img, lineptr[1], y, matrix, xmin, ymin, xmax, ymax);
print_vertex(img, lineptr[2], y, matrix, xmin, ymin, xmax, ymax);
print_vertex(img, lineptr[2], y + 1, matrix, xmin, ymin, xmax, ymax);
print_vertex(img, lineptr[1], y + 1, matrix, xmin, ymin, xmax, ymax);
puts("endpolygon();");
}
}
#endif // 0
printf("# Bounding box = [ %.2f %.2f %.2f %.2f ]\n", xmin, ymin, xmax, ymax);
fputs("\rDone! \n", stderr);
return (0);
}
//
// End of "$Id: png2fti.cxx 1291 2004-06-14 16:03:10Z mike $".
//
|
