231 {
232 uint8_t outputWidth =
xyMap.getWidth();
233 uint8_t outputHeight =
xyMap.getHeight();
234 if (outputWidth !=
xyMap.getWidth() || outputHeight !=
xyMap.getHeight()) {
235
236 return;
237 }
238 uint16_t n =
xyMap.getTotal();
239
240 for (uint8_t
y = 0;
y < outputHeight;
y++) {
241 for (uint8_t
x = 0;
x < outputWidth;
x++) {
242
243 float fx =
244 static_cast<float>(
x) * (inputWidth - 1) / (outputWidth - 1);
245 float fy =
246 static_cast<float>(
y) * (inputHeight - 1) / (outputHeight - 1);
247
248 uint8_t ix = static_cast<uint8_t>(fx);
249 uint8_t iy = static_cast<uint8_t>(fy);
250 float dx = fx - ix;
251 float dy = fy - iy;
252
253 uint8_t ix1 = (ix + 1 < inputWidth) ? ix + 1 : ix;
254 uint8_t iy1 = (iy + 1 < inputHeight) ? iy + 1 : iy;
255
256 uint16_t i00 = iy * inputWidth + ix;
257 uint16_t i10 = iy * inputWidth + ix1;
258 uint16_t i01 = iy1 * inputWidth + ix;
259 uint16_t i11 = iy1 * inputWidth + ix1;
260
261 CRGB c00 = input[i00];
262 CRGB c10 = input[i10];
263 CRGB c01 = input[i01];
264 CRGB c11 = input[i11];
265
267 result.r =
269 result.g =
271 result.b =
273
274 uint16_t idx =
xyMap.mapToIndex(
x,
y);
275 if (idx < n) {
276 output[idx] = result;
277 }
278 }
279 }
280}
uint8_t upscaleFloat(uint8_t v00, uint8_t v10, uint8_t v01, uint8_t v11, float dx, float dy)
Representation of an RGB pixel (Red, Green, Blue)