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void filterIcy(Img *img, Img *icyCurve, Img *icyColor, double size, int withWind) {
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if (!img->data) return;
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size = fabs(size);
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if (!(size > IMG_PRECISION)) withWind = FALSE;
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const int optNoiseWidth0 = (int)round(size/4);
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const int optNoiseWidth1 = (int)round(size);
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const double optNoise0 = 1;
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const double optNoise1 = 0.75;
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const double optBright0 = 1.1;
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const double optBright1 = 1.4;
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const double optWind = 0.75;
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const int optWindWidth0 = (int)round(size/4);
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const int optWindWidth1 = (int)round(size/2);
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const double optWindNoise0 = 0.5;
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const double optWindNoise1 = 0.75;
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const double optWindAtt = withWind ? pow(0.95, 4/size) : 0;
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double blurSize = size/2;
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if (optNoiseWidth0) filterMulNoiseGray(img, img->w/optNoiseWidth0, img->h/optNoiseWidth0, 1-optNoise0, 1);
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if (optNoiseWidth1) filterMulNoiseGray(img, img->w/optNoiseWidth1, img->h/optNoiseWidth1, 1-optNoise1, 1);
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filterFillCh(img, 3, 1);
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filterBlurGauss(img, blurSize, blurSize);
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ClMat m;
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clmMulColor(&m, optBright0);
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filterMatrix(img, &m);
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if (icyCurve && icyCurve->data) {
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//int mi = 0;
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//for(int i = 1; i < icyCurve->w; ++i)
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// if (imgPixel(icyCurve, i-1, 0)[0] - IMG_PRECISION <= imgPixel(icyCurve, i, 0)[0])
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// mi = i; else break;
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int mi = 128;
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int mmi = size > 4 ? round(mi*4/size) : mi;
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if (mmi < mi && mi < icyCurve->w - 1) {
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Img imgA = {}, imgB = {};
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imgCropTo(&imgA, icyCurve, 0, 0, mi, icyCurve->h);
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filterResampleCubic(&imgA, mmi, icyCurve->h);
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imgInit(&imgB, icyCurve->w - mi + mmi + 1, icyCurve->h);
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imgCopyTo(&imgB, &imgA, 1, 0, 0, 0, imgA.w, imgA.h);
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imgCopyTo(&imgB, icyCurve, mmi + 1, 0, mi, 0, icyCurve->w - mi, icyCurve->h);
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filterFillCh(&imgB, 3, 1);
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filterCurveByCh(img, &imgB, 0);
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imgDestroy(&imgA);
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imgDestroy(&imgB);
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} else {
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filterCurveByCh(img, icyCurve, 0);
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}
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}
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clmMulColor(&m, optBright1);
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filterMatrix(img, &m);
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if (withWind) {
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Img wind = {};
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imgCopy(&wind, img);
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Img pat = {};
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imgInit(&pat, img->w, 1);
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double clOne[] = {1,1,1,1};
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filterFill(&pat, clOne);
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if (optWindWidth0) filterMulNoiseGray(&pat, img->w/optWindWidth0, 1, 1-optWindNoise0, 1);
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if (optWindWidth1) filterMulNoiseGray(&pat, img->w/optWindWidth1, 1, 1-optWindNoise1, 1);
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filterWind(&wind, &pat, optWindAtt);
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imgDestroy(&pat);
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filterBlend(&wind, img, &bfuncSum, -1);
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filterBlend(img, &wind, &bfuncSum, optWind);
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imgDestroy(&wind);
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}
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if (icyColor)
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filterCurveByCh(img, icyColor, 0);
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//clmScreenToCompositeYUV(&m);
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//filterMatrix(img, &m);
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filterScreenToCompositeHSV(img);
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}
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int icyGenerate(Img *img, int argc, char **argv) {
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if (img) imgDestroy(img);
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char *inFile = "", *outFile = "";
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char *curveFile = "data/icy-curve.tga", *colorFile = "data/icy-color.tga";
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double size = 4;
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int withWind = TRUE;
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int withoutWind = FALSE;
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ArgDesc descs[] = {
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{ 'i', &inFile, &pargString, "path to input image" },
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{ 'o', &outFile, &pargString, "path to output image" },
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{ 'c', &curveFile, &pargString, "path to image with crystal curve" },
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{ 'l', &colorFile, &pargString, "path to image with color curve" },
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{ 's', &size, &pargDouble, "effect size" },
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{ 'w', &withWind, NULL, "add icicles (default)" },
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{ 'n', &withoutWind, NULL, "no icicles" },
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{}
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};
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if (!parseArgs(descs, argc, argv) || !inFile[0] || !outFile[0]) {
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printUsage(descs);
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return FALSE;
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}
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if (withoutWind) withWind = FALSE;
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Img imgC = {};
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Img imgCurve = {};
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Img imgColor = {};
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if (!imgLoad(&imgC, inFile))
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return FALSE;
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imgLoad(&imgCurve, curveFile);
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imgLoad(&imgColor, colorFile);
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filterIcy(&imgC, &imgCurve, &imgColor, size, withWind);
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if (!imgSave(&imgC, outFile))
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imgDestroy(&imgC);
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int success = !!imgC.data;
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if (img) imgSwap(img, &imgC);
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imgDestroy(&imgCurve);
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imgDestroy(&imgCurve);
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imgDestroy(&imgC);
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return success;
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}
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