270 lines
9.7 KiB
C++
270 lines
9.7 KiB
C++
#include <stdexcept> /* std::domain_error */
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#include <limits> /* std::numeric_limits */
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#include "igs_color_rgb_hls.h"
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namespace {
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void pixel_rgba_(const double red_in, const double gre_in, const double blu_in,
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const double alp_in, const double hue_noise // -0.5...0.5
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,
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const double lig_noise // -0.5...0.5
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,
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const double sat_noise, const double alp_noise,
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double &red_out, double &gre_out, double &blu_out,
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double &alp_out, const bool cylindrical = true) {
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double hue, lig, sat, alp;
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igs::color::rgb_to_hls(red_in, gre_in, blu_in, hue, lig, sat, cylindrical);
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alp = alp_in;
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if (0.0 != hue_noise) {
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hue += 360.0 * hue_noise;
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while (hue < 0.0) {
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hue += 360.0;
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}
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while (360.0 <= hue) {
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hue -= 360.0;
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}
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}
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if (0.0 != lig_noise) {
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lig += lig_noise;
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// lig = (lig < 0.0) ? 0.0 : ((1.0 < lig) ? 1.0 : lig);
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}
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if (0.0 != sat_noise) {
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sat += sat_noise;
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sat = (sat < 0.0) ? 0.0 : sat;
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// sat = (sat < 0.0) ? 0.0 : ((1.0 < sat) ? 1.0 : sat);
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}
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if (0.0 != alp_noise) {
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alp += alp_noise;
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alp = (alp < 0.0) ? 0.0 : ((1.0 < alp) ? 1.0 : alp);
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}
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igs::color::hls_to_rgb(hue, lig, sat, red_out, gre_out, blu_out, cylindrical);
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alp_out = alp;
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}
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} // namespace
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//------------------------------------------------------------
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namespace {
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class noise_ref_ {
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public:
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noise_ref_(const float *array, const int height, const int width,
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const int xoffset, const int yoffset, const int zz);
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float noise(int xx // 0...width-1...
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,
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int yy // 0...height-1...
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) const; // return range is 0...1
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private:
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const float *array_;
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const int height_;
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const int width_;
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const int xoffset_;
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const int yoffset_;
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const int zz_;
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/* copy constructorを無効化 */
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noise_ref_(const noise_ref_ &);
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/* 代入演算子を無効化 */
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noise_ref_ &operator=(const noise_ref_ &);
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};
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noise_ref_::noise_ref_(const float *array, const int height, const int width,
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const int xoffset, const int yoffset, const int zz)
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: array_(array)
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, height_(height)
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, width_(width)
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, xoffset_(xoffset)
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, yoffset_(yoffset)
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, zz_(zz) {
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if (0 == array) {
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throw std::domain_error("noise_ref_ no data");
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}
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if ((zz < 0) || (4 <= zz)) {
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throw std::domain_error("noise_ref_ bad zz");
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}
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}
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float noise_ref_::noise(int xx, int yy) const {
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xx -= this->xoffset_;
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yy -= this->yoffset_;
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while (xx < 0) {
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xx += this->width_;
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}
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while (this->width_ <= xx) {
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xx -= this->width_;
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}
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while (yy < 0) {
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yy += this->height_;
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}
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while (this->height_ <= yy) {
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yy -= this->height_;
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}
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return (*(this->array_ + 4 * this->width_ * yy + 4 * xx + this->zz_));
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}
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} // namespace
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//------------------------------------------------------------
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#include "igs_ifx_common.h" /* igs::image::rgba */
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#include "igs_hls_add.h"
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namespace {
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/* raster逕ｻ蜒上↓繝弱う繧ｺ繧偵・縺帙ｋ*/
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void change_(float *image_array, const int height, const int width,
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const int channels, const noise_ref_ &noi,
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const float *ref, /* 豎ゅａ繧狗判蜒・out)縺ｨ蜷後§鬮倥＆縲∝ｹ・√メ繝｣繝ｳ繝阪Ν謨ｰ */
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const double offset, const double hue_scale,
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const double lig_scale, const double sat_scale,
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const double alp_scale, const bool add_blend_sw,
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const bool cylindrical = true) {
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if (igs::image::rgba::siz == channels) {
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using namespace igs::image::rgba;
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for (int yy = 0; yy < height; ++yy) {
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for (int xx = 0; xx < width; ++xx, image_array += channels) {
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/* 変化量初期値 */
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float refv = 1.f;
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/* 参照画像あればピクセル単位の画像変化量を得る */
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if (ref != nullptr) {
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refv *= (*ref);
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ref++; /* continue;縺ｮ蜑阪↓陦後≧縺薙→ */
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}
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/* 加算合成で、Alpha値ゼロならRGB値を計算する必要はない */
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if (add_blend_sw && (0.f == image_array[alp])) {
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continue;
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}
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/* 加算合成でなくAlpha合成の時は、
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Alpha値がゼロでもRGB値は存在する(してもよい) */
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/* HLSAそれぞれに対するオフセット済ノイズ値 */
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refv *= (noi.noise(xx, yy) - offset);
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/* マスクSWがON、なら変化をMask */
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if (add_blend_sw && (image_array[alp] < 1.f)) {
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refv *= image_array[alp];
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}
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/* RGBAにHLSAノイズを加える */
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double rr, gg, bb, aa;
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pixel_rgba_(image_array[red], image_array[gre], image_array[blu],
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image_array[alp], refv * hue_scale, refv * lig_scale,
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refv * sat_scale, refv * alp_scale, rr, gg, bb, aa,
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cylindrical);
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/* 変化後の値を戻す */
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image_array[red] = (float)rr;
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image_array[gre] = (float)gg;
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image_array[blu] = (float)bb;
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image_array[alp] = (float)aa;
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}
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}
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} else if (igs::image::rgb::siz == channels) {
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using namespace igs::image::rgb;
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for (int yy = 0; yy < height; ++yy) {
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for (int xx = 0; xx < width; ++xx, image_array += channels) {
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/* 変化量初期値 */
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float refv = 1.f;
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/* 参照画像あればピクセル単位の画像変化量を得る */
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if (ref != nullptr) {
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refv *= (*ref);
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ref++; /* continue;縺ｮ蜑阪↓陦後≧縺薙→ */
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}
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/* HLSそれぞれに対するオフセット済ノイズ値 */
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refv *= (noi.noise(xx, yy) - offset);
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/* RGBにHLSノイズを加える */
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double rr, gg, bb, aa;
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pixel_rgba_(image_array[red], image_array[gre], image_array[blu], 1.0,
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refv * hue_scale, refv * lig_scale, refv * sat_scale, 0.0,
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rr, gg, bb, aa, cylindrical);
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/* 変化後の値を戻す */
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image_array[red] = (float)rr;
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image_array[gre] = (float)gg;
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image_array[blu] = (float)bb;
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}
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}
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} else if (1 == channels) { /* grayscale */
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for (int yy = 0; yy < height; ++yy) {
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for (int xx = 0; xx < width; ++xx, ++image_array) {
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/* 変化量初期値 */
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float refv = 1.f;
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/* 参照画像あればピクセル単位の画像変化量を得る */
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if (ref != nullptr) {
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refv *= (*ref);
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ref++; /* continue;縺ｮ蜑阪↓陦後≧縺薙→ */
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}
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/* Lに対するオフセット済ノイズ値 */
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refv *= (noi.noise(xx, yy) - offset);
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/* 変化なしなら次へ */
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if (0.0 == refv * lig_scale) {
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continue;
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}
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/* GrayscaleにLノイズを加える */
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float lig = image_array[0] + refv * lig_scale;
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// lig = (lig < 0.f) ? 0.f : ((1.f < lig) ? 1.f : lig);
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/* 変化後の値を戻す */
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image_array[0] = lig;
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}
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}
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}
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}
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}
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void igs::hls_add::change(
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float *image_array, const int height, const int width, const int channels,
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const float *noi_image_array,
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const float *ref, /* 豎ゅａ繧狗判蜒上→蜷後§鬮倥∝ｹ・…hannels謨ｰ */
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const int xoffset, const int yoffset, const int from_rgba,
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const double offset, const double hue_scale, const double lig_scale,
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const double sat_scale, const double alp_scale, const bool add_blend_sw,
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const bool cylindrical) {
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if ((0.0 == hue_scale) && (0.0 == lig_scale) && (0.0 == sat_scale) &&
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(0.0 == alp_scale)) {
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return;
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}
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if ((igs::image::rgba::siz != channels) &&
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(igs::image::rgb::siz != channels) && (1 != channels) /* grayscale */
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) {
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throw std::domain_error("Bad channels,Not rgba/rgb/grayscale");
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}
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/* ノイズ参照画像を作成する */
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noise_ref_ noi(noi_image_array, height, width, xoffset, yoffset, from_rgba);
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change_(image_array, height, width, channels, noi, ref, offset, hue_scale,
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lig_scale, sat_scale, alp_scale, add_blend_sw, cylindrical);
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/* rgb(a)画像にhls(a)でドットノイズを加える */
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/* if ((std::numeric_limits<unsigned char>::digits == bits) &&
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((std::numeric_limits<unsigned char>::digits == ref_bits) ||
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(0 == ref_bits))) {
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change_template_(image_array, height, width, channels, noi, ref, ref_mode,
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offset, hue_scale, lig_scale, sat_scale, alp_scale,
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add_blend_sw);
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} else if ((std::numeric_limits<unsigned short>::digits == bits) &&
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((std::numeric_limits<unsigned char>::digits == ref_bits) ||
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(0 == ref_bits))) {
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change_template_(reinterpret_cast<unsigned short *>(image_array), height,
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width, channels, noi, ref, ref_mode, offset, hue_scale,
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lig_scale, sat_scale, alp_scale, add_blend_sw);
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} else if ((std::numeric_limits<unsigned short>::digits == bits) &&
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(std::numeric_limits<unsigned short>::digits == ref_bits)) {
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change_template_(
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reinterpret_cast<unsigned short *>(image_array), height, width,
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channels, noi, reinterpret_cast<const unsigned short *>(ref),
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ref_mode, offset, hue_scale, lig_scale, sat_scale, alp_scale, add_blend_sw);
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} else if ((std::numeric_limits<unsigned char>::digits == bits) &&
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(std::numeric_limits<unsigned short>::digits == ref_bits)) {
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change_template_(image_array, height, width, channels, noi,
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reinterpret_cast<const unsigned short *>(ref), ref_mode,
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offset, hue_scale, lig_scale, sat_scale, alp_scale,
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add_blend_sw);
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} else {
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throw std::domain_error("Bad bits,Not uchar/ushort");
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}
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*/
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}
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