PostGIS 3.7.0dev-r@@SVN_REVISION@@
Loading...
Searching...
No Matches

◆ test_band_get_nearest_pixel()

static void test_band_get_nearest_pixel ( )
static

Definition at line 28 of file cu_band_misc.c.

28 {
29 rt_raster rast;
30 rt_band band;
31 int x, y;
32 uint32_t rtn;
33 const int maxX = 10;
34 const int maxY = 10;
35 rt_pixel npixels = NULL;
36
37 double **value;
38 int **nodata;
39 int dimx;
40 int dimy;
41
42 rast = rt_raster_new(maxX, maxY);
43 CU_ASSERT(rast != NULL);
44
45 band = cu_add_band(rast, PT_32BUI, 1, 0);
46 CU_ASSERT(band != NULL);
47
48 for (x = 0; x < maxX; x++) {
49 for (y = 0; y < maxY; y++) {
50 rtn = rt_band_set_pixel(band, x, y, 1, NULL);
51 }
52 }
53
54 rt_band_set_pixel(band, 0, 0, 0, NULL);
55 rt_band_set_pixel(band, 3, 0, 0, NULL);
56 rt_band_set_pixel(band, 6, 0, 0, NULL);
57 rt_band_set_pixel(band, 9, 0, 0, NULL);
58 rt_band_set_pixel(band, 1, 2, 0, NULL);
59 rt_band_set_pixel(band, 4, 2, 0, NULL);
60 rt_band_set_pixel(band, 7, 2, 0, NULL);
61 rt_band_set_pixel(band, 2, 4, 0, NULL);
62 rt_band_set_pixel(band, 5, 4, 0, NULL);
63 rt_band_set_pixel(band, 8, 4, 0, NULL);
64 rt_band_set_pixel(band, 0, 6, 0, NULL);
65 rt_band_set_pixel(band, 3, 6, 0, NULL);
66 rt_band_set_pixel(band, 6, 6, 0, NULL);
67 rt_band_set_pixel(band, 9, 6, 0, NULL);
68 rt_band_set_pixel(band, 1, 8, 0, NULL);
69 rt_band_set_pixel(band, 4, 8, 0, NULL);
70 rt_band_set_pixel(band, 7, 8, 0, NULL);
71
72 /* 0,0 */
73 rtn = rt_band_get_nearest_pixel(
74 band,
75 0, 0,
76 0, 0,
77 1,
78 &npixels
79 );
80 CU_ASSERT_EQUAL(rtn, 3);
81 if (rtn)
82 rtdealloc(npixels);
83
84 /* 1,1 */
85 rtn = rt_band_get_nearest_pixel(
86 band,
87 1, 1,
88 0, 0,
89 1,
90 &npixels
91 );
92 CU_ASSERT_EQUAL(rtn, 6);
93 if (rtn)
94 rtdealloc(npixels);
95
96 /* 4,4 */
97 rtn = rt_band_get_nearest_pixel(
98 band,
99 4, 4,
100 0, 0,
101 1,
102 &npixels
103 );
104 CU_ASSERT_EQUAL(rtn, 7);
105 if (rtn)
106 rtdealloc(npixels);
107
108 /* 4,4 distance 2 */
109 rtn = rt_band_get_nearest_pixel(
110 band,
111 4, 4,
112 2, 2,
113 1,
114 &npixels
115 );
116 CU_ASSERT_EQUAL(rtn, 19);
117 if (rtn)
118 rtdealloc(npixels);
119
120 /* 10,10 */
121 rtn = rt_band_get_nearest_pixel(
122 band,
123 10, 10,
124 0, 0,
125 1,
126 &npixels
127 );
128 CU_ASSERT_EQUAL(rtn, 1);
129 if (rtn)
130 rtdealloc(npixels);
131
132 /* 11,11 distance 1 */
133 rtn = rt_band_get_nearest_pixel(
134 band,
135 11, 11,
136 1, 1,
137 1,
138 &npixels
139 );
140 CU_ASSERT_EQUAL(rtn, 0);
141 if (rtn)
142 rtdealloc(npixels);
143
144 /* -1,-1 */
145 rtn = rt_band_get_nearest_pixel(
146 band,
147 -1, -1,
148 0, 0,
149 1,
150 &npixels
151 );
152 CU_ASSERT_EQUAL(rtn, 3);
153 if (rtn)
154 rtdealloc(npixels);
155
156 /* -1,-1 distance 1 */
157 rtn = rt_band_get_nearest_pixel(
158 band,
159 -1, -1,
160 1, 1,
161 1,
162 &npixels
163 );
164 CU_ASSERT_EQUAL(rtn, 0);
165 if (rtn)
166 rtdealloc(npixels);
167
168 /* -1,1 distance 1 */
169 rtn = rt_band_get_nearest_pixel(
170 band,
171 -1, 1,
172 1, 1,
173 1,
174 &npixels
175 );
176 CU_ASSERT_EQUAL(rtn, 2);
177
178 rtn = rt_pixel_set_to_array(
179 npixels, rtn, NULL,
180 -1, 1,
181 1, 1,
182 &value,
183 &nodata,
184 &dimx, &dimy
185 );
186 rtdealloc(npixels);
187 CU_ASSERT_EQUAL(rtn, ES_NONE);
188 CU_ASSERT_EQUAL(dimx, 3);
189 CU_ASSERT_EQUAL(dimy, 3);
190
191 for (x = 0; x < dimx; x++) {
192 rtdealloc(nodata[x]);
193 rtdealloc(value[x]);
194 }
195
196 rtdealloc(nodata);
197 rtdealloc(value);
198
199 /* -2,2 distance 1 */
200 rtn = rt_band_get_nearest_pixel(
201 band,
202 -2, 2,
203 1, 1,
204 1,
205 &npixels
206 );
207 CU_ASSERT_EQUAL(rtn, 0);
208 if (rtn)
209 rtdealloc(npixels);
210
211 /* -10,2 distance 3 */
212 rtn = rt_band_get_nearest_pixel(
213 band,
214 -10, 2,
215 3, 3,
216 1,
217 &npixels
218 );
219 CU_ASSERT_EQUAL(rtn, 0);
220 if (rtn)
221 rtdealloc(npixels);
222
223 /* -10,2 distance 3 include NODATA */
224 rtn = rt_band_get_nearest_pixel(
225 band,
226 -10, 2,
227 3, 3,
228 0,
229 &npixels
230 );
231 CU_ASSERT_EQUAL(rtn, 48);
232 if (rtn)
233 rtdealloc(npixels);
234
235 /* 4,4 distance 3,2 */
236 rtn = rt_band_get_nearest_pixel(
237 band,
238 4, 4,
239 3, 2,
240 1,
241 &npixels
242 );
243 CU_ASSERT_EQUAL(rtn, 27);
244 if (rtn)
245 rtdealloc(npixels);
246
247 /* 2,7 distance 3,1 */
248 rtn = rt_band_get_nearest_pixel(
249 band,
250 2, 7,
251 3, 1,
252 1,
253 &npixels
254 );
255 CU_ASSERT_EQUAL(rtn, 13);
256 if (rtn)
257 rtdealloc(npixels);
258
259 /* 10,10 distance 1,3 */
260 rtn = rt_band_get_nearest_pixel(
261 band,
262 10,10,
263 1, 3,
264 1,
265 &npixels
266 );
267 CU_ASSERT_EQUAL(rtn, 3);
268 if (rtn)
269 rtdealloc(npixels);
270
271 /* band with no NODATA */
272 band = cu_add_band(rast, PT_32BUI, 0, 0);
273 CU_ASSERT(band != NULL);
274
275 /* 0,0 */
276 rtn = rt_band_get_nearest_pixel(
277 band,
278 0, 0,
279 0, 0,
280 1,
281 &npixels
282 );
283 CU_ASSERT_EQUAL(rtn, 8);
284 if (rtn)
285 rtdealloc(npixels);
286
287 cu_free_raster(rast);
288}
PT_32BUI
@ PT_32BUI
Definition librtcore.h:197
rt_raster_new
rt_raster rt_raster_new(uint32_t width, uint32_t height)
Construct a raster with given dimensions.
Definition rt_raster.c:52
rt_band_set_pixel
rt_errorstate rt_band_set_pixel(rt_band band, int x, int y, double val, int *converted)
Set single pixel's value.
Definition rt_band.c:1140
ES_NONE
@ ES_NONE
Definition librtcore.h:182
rt_pixel_set_to_array
rt_errorstate rt_pixel_set_to_array(rt_pixel npixel, uint32_t count, rt_mask mask, int x, int y, uint16_t distancex, uint16_t distancey, double ***value, int ***nodata, int *dimx, int *dimy)
Definition rt_pixel.c:301
rt_band_get_nearest_pixel
uint32_t rt_band_get_nearest_pixel(rt_band band, int x, int y, uint16_t distancex, uint16_t distancey, int exclude_nodata_value, rt_pixel *npixels)
Get nearest pixel(s) with value (not NODATA) to specified pixel.
Definition rt_band.c:1709
rtdealloc
void rtdealloc(void *mem)
Definition rt_context.c:206
genraster.value
int value
Definition genraster.py:62
cu_add_band
rt_band cu_add_band(rt_raster raster, rt_pixtype pixtype, int hasnodata, double nodataval)
Definition raster/test/cunit/cu_tester.c:224
cu_free_raster
void cu_free_raster(rt_raster raster)
Definition raster/test/cunit/cu_tester.c:211
rt_band_t
Definition librtcore.h:2515
rt_pixel_t
Definition librtcore.h:2535
rt_raster_t
Definition librtcore.h:2486

References cu_add_band(), cu_free_raster(), ES_NONE, PT_32BUI, rt_band_get_nearest_pixel(), rt_band_set_pixel(), rt_pixel_set_to_array(), rt_raster_new(), and rtdealloc().

Referenced by band_misc_suite_setup().

Here is the call graph for this function:
Here is the caller graph for this function: