#include <stdexcept> /* std::domain_error */
#include <limits> /* std::numeric_limits */
#include "igs_color_rgb_hsv.h"
namespace
{
void pixel_rgba_(
const double red_in, const double gre_in, const double blu_in, const double alp_in, const double hue_noise // -0.5...0.5
,
const double sat_noise, const double val_noise // -0.5...0.5
,
const double alp_noise, double &red_out, double &gre_out, double &blu_out, double &alp_out)
{
double hue, sat, val, alp;
igs::color::rgb_to_hsv(red_in, gre_in, blu_in, hue, sat, val);
alp = alp_in;
if (0.0 != hue_noise) {
hue += 360.0 * hue_noise;
while (hue < 0.0) {
hue += 360.0;
}
while (360.0 <= hue) {
hue -= 360.0;
}
}
if (0.0 != sat_noise) {
sat += sat_noise;
if (sat < 0.0) {
sat = 0.0;
} else if (1.0 < sat) {
sat = 1.0;
}
}
if (0.0 != val_noise) {
val += val_noise;
if (val < 0.0) {
val = 0.0;
} else if (1.0 < val) {
val = 1.0;
}
}
if (0.0 != alp_noise) {
alp += alp_noise;
alp = (alp < 0.0) ? 0.0 : ((1.0 < alp) ? 1.0 : alp);
}
igs::color::hsv_to_rgb(hue, sat, val, red_out, gre_out, blu_out);
alp_out = alp;
}
}
//------------------------------------------------------------
namespace
{
class noise_ref_
{
public:
noise_ref_(
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);
double noise(
int xx // 0...width-1...
,
int yy // 0...height-1...
) const; // return range is 0...1
private:
const unsigned char *array_;
const int height_;
const int width_;
const int channels_;
const int bits_;
const double bmax_;
const int xoffset_;
const int yoffset_;
const int zz_;
/* copy constructorを無効化 */
noise_ref_(const noise_ref_ &);
/* 代入演算子を無効化 */
noise_ref_ &operator=(const noise_ref_ &);
};
noise_ref_::noise_ref_(
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)
{
if (0 == array) {
throw std::domain_error("noise_ref_ no data");
}
if ((zz < 0) || (channels <= zz)) {
throw std::domain_error("noise_ref_ bad zz");
}
if (
(std::numeric_limits<unsigned char>::digits != this->bits_) &&
(std::numeric_limits<unsigned short>::digits != this->bits_)) {
throw std::domain_error("noise_ref_ bad bits");
}
}
double noise_ref_::noise(int xx, int yy) const
{
xx -= this->xoffset_;
yy -= this->yoffset_;
while (xx < 0) {
xx += this->width_;
}
while (this->width_ <= xx) {
xx -= this->width_;
}
while (yy < 0) {
yy += this->height_;
}
while (this->height_ <= yy) {
yy -= this->height_;
}
if (std::numeric_limits<unsigned char>::digits == this->bits_) {
return (*(
this->array_ +
this->channels_ * this->width_ * yy +
this->channels_ * xx +
this->zz_)) /
this->bmax_;
}
return (*(
reinterpret_cast<const unsigned short *>(this->array_) +
this->channels_ * this->width_ * yy +
this->channels_ * xx +
this->zz_)) /
this->bmax_;
}
}
//------------------------------------------------------------
#include "igs_ifx_common.h" /* igs::image::rgba */
#include "igs_hsv_add.h"
namespace
{
/* raster画像にノイズをのせるtemplate */
template <class IT, class RT>
void change_template_(
IT *image_array, const int height, const int width, const int channels
,
const noise_ref_ &noi
,
const RT *ref /* 求める画像(out)と同じ高さ、幅、チャンネル数 */
,
const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
,
const double offset, const double hue_scale, const double sat_scale, const double val_scale, const double alp_scale
,
const bool add_blend_sw)
{
const int t_max = std::numeric_limits<IT>::max();
const double div_val = static_cast<double>(t_max);
const double mul_val = static_cast<double>(t_max) + 0.999999;
const int r_max = std::numeric_limits<RT>::max();
if (igs::image::rgba::siz == channels) {
using namespace igs::image::rgba;
for (int yy = 0; yy < height; ++yy) {
for (int xx = 0; xx < width; ++xx, image_array += channels) {
/* 変化量初期値 */
double refv = 1.0;
/* 参照画像あればピクセル単位の画像変化量を得る */
if (ref != 0) {
refv *= igs::color::ref_value(
ref, channels, r_max, ref_mode);
ref += channels; /* continue;の前に行うこと */
}
/* 加算合成で、Alpha値ゼロならRGB値を計算する必要はない */
if (add_blend_sw && (0 == image_array[alp])) {
continue;
}
/* 加算合成でなくAlpha合成の時は、
Alpha値がゼロでもRGB値は存在する(してもよい) */
/* HSVAそれぞれに対するオフセット済ノイズ値 */
refv *= (noi.noise(xx, yy) - offset);
/* マスクSWがON、なら変化をMask */
if (add_blend_sw && (image_array[alp] < t_max)) {
refv *= static_cast<double>(image_array[alp]) / div_val;
}
/* RGBAにHSVAノイズを加える */
double rr, gg, bb, aa;
pixel_rgba_(
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 * sat_scale, refv * val_scale, refv * alp_scale, rr, gg, bb, aa);
/* 変化後の値を戻す */
image_array[red] = static_cast<IT>(rr * mul_val);
image_array[gre] = static_cast<IT>(gg * mul_val);
image_array[blu] = static_cast<IT>(bb * mul_val);
image_array[alp] = static_cast<IT>(aa * mul_val);
}
}
} else if (igs::image::rgb::siz == channels) {
using namespace igs::image::rgb;
for (int yy = 0; yy < height; ++yy) {
for (int xx = 0; xx < width; ++xx, image_array += channels) {
/* 変化量初期値 */
double refv = 1.0;
/* 参照画像あればピクセル単位の画像変化量を得る */
if (ref != 0) {
refv *= igs::color::ref_value(
ref, channels, r_max, ref_mode);
ref += channels; /* continue;の前に行うこと */
}
/* HSVそれぞれに対するオフセット済ノイズ値 */
refv *= (noi.noise(xx, yy) - offset);
/* RGBにHSVノイズを加える */
double rr, gg, bb, aa;
pixel_rgba_(
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 * sat_scale, refv * val_scale, 0.0, rr, gg, bb, aa);
/* 変化後の値を戻す */
image_array[red] = static_cast<IT>(rr * mul_val);
image_array[gre] = static_cast<IT>(gg * mul_val);
image_array[blu] = static_cast<IT>(bb * mul_val);
}
}
} else if (1 == channels) { /* grayscale */
for (int yy = 0; yy < height; ++yy) {
for (int xx = 0; xx < width; ++xx, ++image_array) {
/* 変化量初期値 */
double refv = 1.0;
/* 参照画像あればピクセル単位の画像変化量を得る */
if (ref != 0) {
refv *= igs::color::ref_value(
ref, channels, r_max, ref_mode);
ref += channels; /* continue;の前に行うこと */
}
/* Lに対するオフセット済ノイズ値 */
refv *= (noi.noise(xx, yy) - offset);
/* 変化なしなら次へ */
if (0.0 == refv * val_scale) {
continue;
}
/* GrayscaleにLノイズを加える */
double val = static_cast<double>(image_array[0]) / div_val + refv * val_scale;
val = (val < 0.0) ? 0.0 : ((1.0 < val) ? 1.0 : val);
/* 変化後の値を戻す */
image_array[0] = static_cast<IT>(val * mul_val);
}
}
}
}
}
void igs::hsv_add::change(
unsigned char *image_array, const int height, const int width, const int channels, const int bits
,
const unsigned char *noi_image_array, const int noi_height, const int noi_width, const int noi_channels, const int noi_bits
,
const unsigned char *ref /* 求める画像と同じ高、幅、channels数 */
,
const int ref_bits /* refがゼロのときはここもゼロ */
,
const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
,
const int xoffset, const int yoffset, const int from_rgba, const double offset, const double hue_scale, const double sat_scale, const double val_scale, const double alp_scale
,
const bool add_blend_sw)
{
if ((0.0 == hue_scale) && (0.0 == sat_scale) && (0.0 == val_scale) && (0.0 == alp_scale)) {
return;
}
if ((igs::image::rgba::siz != channels) &&
(igs::image::rgb::siz != channels) &&
(1 != channels) /* grayscale */
) {
throw std::domain_error("Bad channels,Not rgba/rgb/grayscale");
}
/* ノイズ参照画像を作成する */
noise_ref_ noi(
noi_image_array
,
noi_height, noi_width, noi_channels, noi_bits
,
xoffset, yoffset, from_rgba);
/* rgb(a)画像にhsv(a)でドットノイズを加える */
if ((std::numeric_limits<unsigned char>::digits == bits) && ((std::numeric_limits<unsigned char>::digits == ref_bits) || (0 == ref_bits))) {
change_template_(
image_array, height, width, channels, noi, ref, ref_mode, offset, hue_scale, sat_scale, val_scale, alp_scale, add_blend_sw);
} else if ((std::numeric_limits<unsigned short>::digits == bits) && ((std::numeric_limits<unsigned char>::digits == ref_bits) || (0 == ref_bits))) {
change_template_(
reinterpret_cast<unsigned short *>(image_array), height, width, channels, noi, ref, ref_mode, offset, hue_scale, sat_scale, val_scale, alp_scale, add_blend_sw);
} else if ((std::numeric_limits<unsigned short>::digits == bits) && (std::numeric_limits<unsigned short>::digits == ref_bits)) {
change_template_(
reinterpret_cast<unsigned short *>(image_array), height, width, channels, noi, reinterpret_cast<const unsigned short *>(ref), ref_mode, offset, hue_scale, sat_scale, val_scale, alp_scale, add_blend_sw);
} else if ((std::numeric_limits<unsigned char>::digits == bits) && (std::numeric_limits<unsigned short>::digits == ref_bits)) {
change_template_(
image_array, height, width, channels, noi, reinterpret_cast<const unsigned short *>(ref), ref_mode, offset, hue_scale, sat_scale, val_scale, alp_scale, add_blend_sw);
} else {
throw std::domain_error("Bad bits,Not uchar/ushort");
}
}