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#include <stdexcept> /* std::domain_error  */</stdexcept>
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#include <limits>	/* std::numeric_limits */</limits>
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#include "igs_color_rgb_hls.h"
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namespace
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{
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void pixel_rgba_(
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	const double red_in, const double gre_in, const double blu_in, 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, double &red_out, double &gre_out, double &blu_out, double &alp_out)
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{
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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);
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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 : ((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);
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	alp_out = alp;
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}
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}
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//------------------------------------------------------------
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namespace
Toshihiro Shimizu 890ddd
{
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class noise_ref_
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{
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public:
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	noise_ref_(
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		const unsigned char *array, const int height, const int width, const int channels, const int bits, const int xoffset, const int yoffset, const int zz);
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	double noise(
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		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 unsigned char *array_;
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	const int height_;
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	const int width_;
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	const int channels_;
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	const int bits_;
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	const double bmax_;
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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_ &);
Toshihiro Shimizu 890ddd
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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_(
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	const unsigned char *array, const int height, const int width, const int channels, const int bits, const int xoffset, const int yoffset, const int zz) : array_(array), height_(height), width_(width), channels_(channels), bits_(bits), bmax_(static_cast<double>((1 << bits) - 1)), xoffset_(xoffset), yoffset_(yoffset), zz_(zz)</double>
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{
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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) || (channels <= zz)) {
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		throw std::domain_error("noise_ref_  bad zz");
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	}
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	if (
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		(std::numeric_limits<unsigned char="">::digits != this->bits_) &&</unsigned>
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		(std::numeric_limits<unsigned short="">::digits != this->bits_)) {</unsigned>
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		throw std::domain_error("noise_ref_  bad bits");
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	}
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}
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double noise_ref_::noise(int xx, int yy) const
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{
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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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	if (std::numeric_limits<unsigned char="">::digits == this->bits_) {</unsigned>
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		return (*(
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				   this->array_ +
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				   this->channels_ * this->width_ * yy +
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				   this->channels_ * xx +
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				   this->zz_)) /
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			   this->bmax_;
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	}
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	return (*(
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			   reinterpret_cast<const *="" short="" unsigned="">(this->array_) +</const>
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			   this->channels_ * this->width_ * yy +
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			   this->channels_ * xx +
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			   this->zz_)) /
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		   this->bmax_;
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}
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}
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//------------------------------------------------------------
Toshihiro Shimizu 890ddd
#include "igs_ifx_common.h" /* igs::image::rgba */
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#include "igs_hls_add.h"
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namespace
Toshihiro Shimizu 890ddd
{
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/* raster画像にノイズをのせるtemplate */
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template <class class="" it,="" rt=""></class>
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void change_template_(
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	IT *image_array, const int height, const int width, const int channels
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	,
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	const noise_ref_ &noi
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	,
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	const RT *ref /* 求める画像(out)と同じ高さ、幅、チャンネル数 */
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	,
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	const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
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	,
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	const double offset, const double hue_scale, const double lig_scale, const double sat_scale, const double alp_scale
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	,
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	const bool add_blend_sw)
Toshihiro Shimizu 890ddd
{
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	const int t_max = std::numeric_limits<it>::max();</it>
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	const double div_val = static_cast<double>(t_max);</double>
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	const double mul_val = static_cast<double>(t_max) + 0.999999;</double>
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	const int r_max = std::numeric_limits<rt>::max();</rt>
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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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				double refv = 1.0;
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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 != 0) {
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					refv *= igs::color::ref_value(
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						ref, channels, r_max, ref_mode);
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					ref += channels; /* continue;の前に行うこと */
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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 == 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] < t_max)) {
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					refv *= static_cast<double>(image_array[alp]) / div_val;</double>
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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_(
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					static_cast<double>(image_array[red]) / div_val, static_cast<double>(image_array[gre]) / div_val, static_cast<double>(image_array[blu]) / div_val, static_cast<double>(image_array[alp]) / div_val, refv * hue_scale, refv * lig_scale, refv * sat_scale, refv * alp_scale, rr, gg, bb, aa);</double></double></double></double>
Toshihiro Shimizu 890ddd
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				/* 変化後の値を戻す */
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				image_array[red] = static_cast<it>(rr * mul_val);</it>
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				image_array[gre] = static_cast<it>(gg * mul_val);</it>
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				image_array[blu] = static_cast<it>(bb * mul_val);</it>
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				image_array[alp] = static_cast<it>(aa * mul_val);</it>
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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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				double refv = 1.0;
Toshihiro Shimizu 890ddd
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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 != 0) {
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					refv *= igs::color::ref_value(
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						ref, channels, r_max, ref_mode);
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					ref += channels; /* continue;の前に行うこと */
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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_(
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					static_cast<double>(image_array[red]) / div_val, static_cast<double>(image_array[gre]) / div_val, static_cast<double>(image_array[blu]) / div_val, 1.0, refv * hue_scale, refv * lig_scale, refv * sat_scale, 0.0, rr, gg, bb, aa);</double></double></double>
Toshihiro Shimizu 890ddd
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				/* 変化後の値を戻す */
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				image_array[red] = static_cast<it>(rr * mul_val);</it>
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				image_array[gre] = static_cast<it>(gg * mul_val);</it>
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				image_array[blu] = static_cast<it>(bb * mul_val);</it>
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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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				double refv = 1.0;
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
				/* 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 != 0) {
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					refv *= igs::color::ref_value(
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						ref, channels, r_max, ref_mode);
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					ref += channels; /* continue;の前に行うこと */
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				}
Toshihiro Shimizu 890ddd
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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);
Toshihiro Shimizu 890ddd
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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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				double lig = static_cast<double>(image_array[0]) / div_val + refv * lig_scale;</double>
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				lig = (lig < 0.0) ? 0.0 : ((1.0 < lig) ? 1.0 : lig);
Toshihiro Shimizu 890ddd
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				/* 変化後の値を戻す */
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				image_array[0] = static_cast<it>(lig * mul_val);</it>
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			}
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		}
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	}
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}
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}
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
void igs::hls_add::change(
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	unsigned char *image_array, const int height, const int width, const int channels, const int bits
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Toshihiro Shimizu 890ddd
	,
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	const unsigned char *noi_image_array, const int noi_height, const int noi_width, const int noi_channels, const int noi_bits
Toshihiro Shimizu 890ddd
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	,
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	const unsigned char *ref /* 求める画像と同じ高、幅、channels数 */
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	,
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	const int ref_bits /* refがゼロのときはここもゼロ */
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	,
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	const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
	,
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	const int xoffset, const int yoffset, const int from_rgba, const double offset, const double hue_scale, const double lig_scale, const double sat_scale, const double alp_scale
Toshihiro Shimizu 890ddd
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	,
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	const bool add_blend_sw)
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{
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	if ((0.0 == hue_scale) && (0.0 == lig_scale) && (0.0 == sat_scale) && (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) &&
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		(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(
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		noi_image_array
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		,
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		noi_height, noi_width, noi_channels, noi_bits
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		,
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		xoffset, yoffset, from_rgba);
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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) && ((std::numeric_limits<unsigned char="">::digits == ref_bits) || (0 == ref_bits))) {</unsigned></unsigned>
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		change_template_(
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			image_array, height, width, channels, noi, ref, ref_mode, offset, hue_scale, lig_scale, sat_scale, alp_scale, add_blend_sw);
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	} else if ((std::numeric_limits<unsigned short="">::digits == bits) && ((std::numeric_limits<unsigned char="">::digits == ref_bits) || (0 == ref_bits))) {</unsigned></unsigned>
Toshihiro Shimizu 890ddd
		change_template_(
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			reinterpret_cast<unsigned *="" short="">(image_array), height, width, channels, noi, ref, ref_mode, offset, hue_scale, lig_scale, sat_scale, alp_scale, add_blend_sw);</unsigned>
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	} else if ((std::numeric_limits<unsigned short="">::digits == bits) && (std::numeric_limits<unsigned short="">::digits == ref_bits)) {</unsigned></unsigned>
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		change_template_(
Toshihiro Shimizu 890ddd
			reinterpret_cast<unsigned *="" short="">(image_array), height, width, channels, noi, reinterpret_cast<const *="" short="" unsigned="">(ref), ref_mode, offset, hue_scale, lig_scale, sat_scale, alp_scale, add_blend_sw);</const></unsigned>
Toshihiro Shimizu 890ddd
	} else if ((std::numeric_limits<unsigned char="">::digits == bits) && (std::numeric_limits<unsigned short="">::digits == ref_bits)) {</unsigned></unsigned>
Toshihiro Shimizu 890ddd
		change_template_(
Toshihiro Shimizu 890ddd
			image_array, height, width, channels, noi, reinterpret_cast<const *="" short="" unsigned="">(ref), ref_mode, offset, hue_scale, lig_scale, sat_scale, alp_scale, add_blend_sw);</const>
Toshihiro Shimizu 890ddd
	} else {
Toshihiro Shimizu 890ddd
		throw std::domain_error("Bad bits,Not uchar/ushort");
Toshihiro Shimizu 890ddd
	}
Toshihiro Shimizu 890ddd
}