private void ColorScaleVertical()
{
int reso = 360;
Color color;
var wb = new WriteableBitmap(32, reso, 96, 96, PixelFormats.Pbgra32, null);
int h = wb.PixelHeight;
int w = wb.PixelWidth;
int stride = wb.BackBufferStride;
byte[] pixels = new byte[h * stride];
wb.CopyPixels(pixels, stride, 0);
int p = 0;
for (int y = 0; y < wb.PixelHeight; ++y)
{
color = HSV.HSV2Color(y * 360 / reso, 1f, 1f);
for (int x = 0; x < wb.PixelWidth; ++x)
{
p = y * stride + (x * 4);
pixels[p + 3] = 255;
pixels[p + 2] = color.R;
pixels[p + 1] = color.G;
pixels[p + 0] = color.B;
}
}
wb.WritePixels(new Int32Rect(0, 0, w, h), pixels, stride, 0);
OriginBitmap = wb;
MyImage.Source = wb;
}
//明度が上下逆、こっちのほうが一般的みたい？
private BitmapSource GetHueRectReverse(double hue, int size)
{
var wb = new WriteableBitmap(size, size, 96, 96, PixelFormats.Pbgra32, null);
int h = wb.PixelHeight;
int w = wb.PixelWidth;
int stride = wb.BackBufferStride;
byte[] pixels = new byte[h * stride];
wb.CopyPixels(pixels, stride, 0);
int p = 0;
Color color;
for (int y = 0; y < h; ++y)
{
for (int x = 0; x < w; ++x)
{
p = y * stride + (x * 4);
color = HSV.HSV2Color(hue, (double)x / (size - 1f), 1f - ((double)y / (size - 1f)));
pixels[p + 3] = 255;
pixels[p + 2] = color.R;
pixels[p + 1] = color.G;
pixels[p + 0] = color.B;
}
}
wb.WritePixels(new Int32Rect(0, 0, size, size), pixels, stride, 0);
return(wb);
}
/// <summary>
/// pixelsFormats.Rgb24の色相環作成用のBitmap作成
/// 右が赤、時計回り
/// </summary>
/// <param name="size"></param>
/// <returns></returns>
private BitmapSource MakeHueBitmap(int size)
{
var wb = new WriteableBitmap(size, size, 96, 96, PixelFormats.Rgb24, null);
//色情報用のバイト配列作成
int stride = wb.BackBufferStride; //横一列のバイト数、24bit = 8byteに横ピクセル数をかけた値
byte[] pixels = new byte[size * stride * 8]; //*8はbyteをbitにするから
//100ｘ100のとき中心は50，50
//ピクセル位置と画像の中心との差
double xDiff = size / 2.0;
double yDiff = size / 2.0;
int p = 0; //今のピクセル位置の配列での位置
for (int y = 0; y < size; y++) //y座標
{
for (int x = 0; x < size; x++) //x座標
{
//今の位置の角度を取得、これが色相になる
double radian = Math.Atan2(y - yDiff, x - xDiff);
double kakudo = Degrees(radian);
//色相をColorに変換
Color c = HSV.HSV2Color(kakudo, 1.0, 1.0);
//バイト配列に色情報を書き込み
p = y * stride + x * 3;
pixels[p] = c.R;
pixels[p + 1] = c.G;
pixels[p + 2] = c.B;
}
}
//バイト配列をBitmapに書き込み
wb.WritePixels(new Int32Rect(0, 0, size, size), pixels, stride, 0);
return(wb);
}
private void ParallelImageSV(int p, int y, int stride, byte[] pixels, double hue, int w, int h)
{
for (int x = 0; x < w; ++x)
{
p = y * stride + (x * 3);
Color svColor = HSV.HSV2Color(hue, x / (double)w, y / (double)h);
pixels[p] = svColor.R;
pixels[p + 1] = svColor.G;
pixels[p + 2] = svColor.B;
}
}
//彩度を指定、0から1
private BitmapSource GetSaturationRect(int width, int height, float saturation)
{
var wb = new WriteableBitmap(width, height, 96, 96, PixelFormats.Pbgra32, null);
int h = wb.PixelHeight;
int w = wb.PixelWidth;
int stride = wb.BackBufferStride;
byte[] pixels = new byte[h * stride];
wb.CopyPixels(pixels, stride, 0);
int p = 0;
Color color;
//高さが1のときは明度を1fに固定したいので特別
if (height == 1)
{
for (int x = 0; x < width; ++x)
{
p = (x * 4);
color = HSV.HSV2Color(
(x / (width - 1f)) * 359f,
saturation,
1f);
pixels[p + 3] = 255;
pixels[p + 2] = color.R;
pixels[p + 1] = color.G;
pixels[p + 0] = color.B;
}
}
else
{
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
p = y * stride + (x * 4);
color = HSV.HSV2Color(
(x / (width - 1f)) * 359f,
saturation,
y / (double)(height - 1f));
pixels[p + 3] = 255;
pixels[p + 2] = color.R;
pixels[p + 1] = color.G;
pixels[p + 0] = color.B;
}
}
}
wb.WritePixels(new Int32Rect(0, 0, w, h), pixels, stride, 0);
return(wb);
}
//彩度を変化させた色相環作成
private BitmapSource MakeHueRountRect2(int width, int height)
{
var wb = new WriteableBitmap(width, height, 96, 96, PixelFormats.Rgb24, null);
//色情報用のバイト配列作成
int stride = wb.BackBufferStride; //横一列のバイト数、24bit = 8byteに横ピクセル数をかけた値
byte[] pixels = new byte[height * stride * 8]; //*8はbyteをbitにするから
//100ｘ100のとき中心は50，50
//ピクセル位置と画像の中心との差
int xDiff = width / 2;
int yDiff = height / 2;
double distance; //中心からの距離
double saturasion; //彩度
int p = 0; //今のピクセル位置の配列での位置
for (int y = 0; y < height; y++) //y座標
{
for (int x = 0; x < width; x++) //x座標
{
distance = Math.Sqrt(Math.Pow(y - yDiff, 2.0) + Math.Pow(x - xDiff, 2.0));
saturasion = distance / xDiff;
if (saturasion > 1.0)
{
saturasion = 1.0;
}
//今の位置の角度を取得、これが色相になる
double radian = Math.Atan2(y - yDiff, x - xDiff);
double kakudo = Degrees(radian);
//色相をColorに変換
Color c = HSV.HSV2Color(kakudo, saturasion, 1.0);
//バイト配列に色情報を書き込み
p = y * stride + x * 3;
pixels[p] = c.R;
pixels[p + 1] = c.G;
pixels[p + 2] = c.B;
}
}
//バイト配列をBitmapに書き込み
wb.WritePixels(new Int32Rect(0, 0, width, height), pixels, stride, 0);
return(wb);
}
private BitmapSource GetImageHue(int w, int h)
{
var wb = new WriteableBitmap(w, h, 96, 96, PixelFormats.Rgb24, null);
int stride = wb.BackBufferStride;
var pixels = new byte[h * stride];
wb.CopyPixels(pixels, stride, 0);
int p = 0;
for (int y = 0; y < h; ++y)
{
for (int x = 0; x < w; ++x)
{
p = y * stride + (x * 3);
Color hue = HSV.HSV2Color(y / (float)h * 360f, 1f, 1f);
pixels[p] = hue.R;
pixels[p + 1] = hue.G;
pixels[p + 2] = hue.B;
}
}
wb.WritePixels(new Int32Rect(0, 0, w, h), pixels, stride, 0);
return(wb);
}
//HSV変更時
private void UpDownHSV_MyValueChanged(object sender, MyValueChangedEventArgs e)
{
IsHsvChanging = true;
if (IsRgbChanging != true)
{
IntegerUpDown.IntegerUpDown ud = (IntegerUpDown.IntegerUpDown)sender;
if (ud == UpDownH)
{
SetImageSV(UpDownH.Value);
}
var s = UpDownS.Value / (double)ImageSize;
var v = UpDownV.Value / (double)ImageSize;
Canvas.SetLeft(ThumbPicker, s * ImageSize - ThumbSize / 2f);
Canvas.SetTop(ThumbPicker, v * ImageSize - ThumbSize / 2f);
var col = HSV.HSV2Color(UpDownH.Value, s, v);
R = col.R;
G = col.G;
B = col.B;
}
IsHsvChanging = false;
}
