本文整理汇总了C#中System.Image.GetPixel方法的典型用法代码示例。如果您正苦于以下问题：C# Image.GetPixel方法的具体用法？C# Image.GetPixel怎么用？C# Image.GetPixel使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Image的用法示例。
在下文中一共展示了Image.GetPixel方法的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Image_SetGrayScaleToAlpha
public void Image_SetGrayScaleToAlpha()
{
Map m = new Map(256, 256);
Image i = new Image(256, 256);
m.Background = new Color("white");
m.Render(i);
i.SetGrayScaleToAlpha();
Color c = i.GetPixel(0, 0);
Assert.AreEqual(c.R, 255);
Assert.AreEqual(c.G, 255);
Assert.AreEqual(c.B, 255);
Assert.AreEqual(c.A, 255);
m.Background = new Color("black");
m.Render(i);
i.SetGrayScaleToAlpha();
Color c1 = i.GetPixel(0, 0);
Assert.AreEqual(c1.R, 255);
Assert.AreEqual(c1.G, 255);
Assert.AreEqual(c1.B, 255);
Assert.AreEqual(c1.A, 0);
i.SetGrayScaleToAlpha(new Color("green"));
Color c2 = i.GetPixel(0, 0);
Assert.AreEqual(c2.R, 0);
Assert.AreEqual(c2.G, 128);
Assert.AreEqual(c2.B, 0);
Assert.AreEqual(c2.A, 255);
}示例2: Image_GetSetPixel
public void Image_GetSetPixel()
{
Image i = new Image(1, 1);
Color c = i.GetPixel(0, 0);
Assert.AreEqual(c.ToString(), "rgba(0,0,0,0.0)");
i.SetPixel(0,0, new Color(255, 255, 255));
Color c1 = i.GetPixel(0, 0);
Assert.AreEqual(c1.ToString(), "rgb(255,255,255)");
}示例3: Save
public override void Save(Image i, System.IO.Stream dest)
{
MemoryStream m = new MemoryStream();
m.WriteByte(0);
#warning Change this next byte to 255 if you update Image with UInt64 for width and height.
m.WriteByte(0);
m.WriteByte(0);
m.WriteByte(0); // Write the 8 empty bytes at the start of the file.
m.WriteByte(0);
m.WriteByte(0);
m.WriteByte(0);
m.WriteByte(0);
byte[] dat = BitConverter.GetBytes(i.Height); // Write the height.
m.Write(dat, 0, dat.Length);
dat = BitConverter.GetBytes(i.Width); // Write the width.
m.Write(dat, 0, dat.Length);
// Now to write the actual data.
Pixel p;
for (uint x = 0; x < i.Width; x++)
{
for (uint y = 0; y < i.Height; y++)
{
p = i.GetPixel(x, y);
m.WriteByte(p.R);
m.WriteByte(p.G);
m.WriteByte(p.B);
m.WriteByte(p.A);
}
}
dat = Orvid.Compression.LZMA.Compress(m.GetBuffer());
dest.WriteByte(255);
dest.Write(dat, 0, dat.Length);
}示例4: Load
public override Image Load(Stream s)
{
Tiff tif = Tiff.Open(s);
FieldValue[] value = tif.GetField(TiffTag.ImageWidth);
int width = value[0].ToInt();
value = tif.GetField(TiffTag.ImageLength);
int height = value[0].ToInt();
int[] raster = new int[height * width];
tif.ReadRGBAImage(width, height, raster);
Image i = new Image(width, height);
int rgba, rasterOffset;
byte r, g, b, a;
for (uint y = 0; y < i.Height; y++)
{
rasterOffset = (int)(y * i.Width);
for (uint x = 0; x < i.Width; x++)
{
rgba = raster[rasterOffset++];
r = (byte)(rgba & 0xff);
g = (byte)((rgba >> 8) & 0xff);
b = (byte)((rgba >> 16) & 0xff);
a = (byte)((rgba >> 24) & 0xff);
i.SetPixel(x, y, new Pixel(r, g, b, a));
}
}
// Need to flip the image.
Image i2 = new Image(width, height);
uint y2 = 0;
for (uint y = (uint)(i.Height - 1); y >= 0 && y < i.Height; y--)
{
for (uint x = 0; x < i.Width; x++)
{
i2.SetPixel(x, y2, i.GetPixel(x, y));
}
y2++;
}
i.Dispose();
return i2;
}示例5: Render
//.........这里部分代码省略.........
tH = mH + (mxY - mY);
y = mH + -mY;
img = new Image(tW, tH);
float f_max = (1 << bdfFontDepth) - 1;
if (f_max == 0)
f_max = 1;
glyph_box = new BDFParser.Rectangle();
src = new Vec2();
dst = new Vec2();
for (int i = 0; i < charsCount; i++)
{
glyph = bdfFont.getGlyph(chrs[i]);
if (glyph == null)
{
continue;
}
glyph_box = glyph.getBbx(glyph_box);
fHeight = glyph_box.height;
fData = glyph.getData();
scan = fData.Length / fHeight;
fg_r = color.R;
fg_g = color.G;
fg_b = color.B;
//box location
bx = x + offset + glyph_box.x;
by = y - fHeight - glyph_box.y;
for (int k = 0; k < fHeight; k++)
{
offsetLine = k * scan;
for (int j = 0; j < scan; j++)
{
fPixel = fData[offsetLine + j];
if (fPixel != 0)
{
//pixel location
px = bx + j;
py = by + k;
if (tx != null)
{
//src.setLocation(px, py);
//tx.transform(src, dst);
#warning TODO: Add support for this.
//px = dst.X;
//py = dst.Y;
}
//clip
if (clip == null || clip.Contains(px, py))
{
//compute color
Pixel bg_color = img.GetPixel((uint)px, (uint)py);
bg_r = bg_color.R;
bg_g = bg_color.G;
bg_b = bg_color.B;
//todo improve this pixel composition
float alpha = fPixel / f_max;
r = bg_r + ((int)((fg_r - bg_r) * alpha)) & 0xFF;
g = bg_g + ((int)((fg_g - bg_g) * alpha)) & 0xFF;
b = bg_b + ((int)((fg_b - bg_b) * alpha)) & 0xFF;
Pixel nw = new Pixel((byte)r, (byte)g, (byte)b, 255);
img.SetPixel((uint)px, (uint)py, nw);
if (x_min > px)
x_min = px;
if (y_min > py)
y_min = py;
if (x_max < px)
x_max = px;
if (y_max < py)
y_max = py;
}
}
}
}
offset += glyph.getDWidth().width;
}
//img = ImageManipulator.Resize(img, new Vec2(img.Width * 8, img.Height * 8), ImageManipulator.ScalingAlgorithm.Bicubic);
//img = ImageManipulator.Resize(img, Vec2.Zero, ImageManipulator.ScalingAlgorithm.Hq2x);
//img = ImageManipulator.Resize(img, Vec2.Zero, ImageManipulator.ScalingAlgorithm.Hq4x);
im.DrawImage(loc, img);
}
}示例6: WriteBitmapData
static void WriteBitmapData(Stream output, Image input)
{
int num = 10;
int num2 = 5;
int num3 = 0;
for (int i = 0; i < input.Height; i++)
{
for (int j = 0; j < input.Width; j++)
{
Pixel pixel = input.GetPixel((uint)j, (uint)i);
ushort num6 = (ushort)(_colorTable8Bit[pixel.B] << (num3 & 0x1f));
ushort num7 = (ushort)(_colorTable8Bit[pixel.G] << (num2 & 0x1f));
ushort num8 = (ushort)(_colorTable8Bit[pixel.R] << (num & 0x1f));
ushort num9 = (ushort)(((0x8000 | num8) | num7) | num6);
output.Write(BitConverter.GetBytes(num9), 0, 2);
}
}
}示例7: Update
public override void Update(Image i)
{
for (ushort x = 0; x < i.Width; x++)
{
for (ushort y = 0; y < i.Height; y++)
{
SetPixel(x, y, i.GetPixel(x, y).ToUInt());
}
}
}示例8: Save
public static void Save(Image img, Stream dest)
{
WriteASCII("/* XPM */\nstatic char * pixmap[] = {\n", dest);
int height = img.Height;
int width = img.Width;
SortedList<int, Pixel> list = new SortedList<int, Pixel>();
int num3 = 0;
for (int i = 0; i < width; i++)
{
for (int m = 0; m < width; m++)
{
Pixel pixel = img.GetPixel((uint)i, (uint)m);
int key = ColorHash(pixel);
if (!list.ContainsKey(key))
{
list.Add(key, pixel);
num3++;
}
}
}
int num7 = 0;
int num8 = 0;
while (num8 < list.Count)
{
num8 += 93;
num7++;
}
WriteASCII("/* width height num_colors chars_per_pixel */\n", dest);
WriteASCII("\"" + width.ToString() + " " + height.ToString() + " " + num3.ToString() + " " + num7.ToString() + "\",\n", dest);
Dictionary<int, string> dictionary = new Dictionary<int, string>();
byte[] ascii = new byte[num7];
for (int j = 0; j < num7; j++)
{
ascii[j] = 0x20;
}
ascii[0] = 0x1f;
WriteASCII("/* colors */\n", dest);
foreach (KeyValuePair<int, Pixel> pair in list)
{
IncrementChars(ascii);
string str2 = Encoding.ASCII.GetString(ascii);
Pixel color2 = pair.Value;
if (color2.A > 0)
{
WriteASCII("\"" + str2 + " c #" + color2.R.ToString("x").PadLeft(2, '0') + color2.G.ToString("x").PadLeft(2, '0') + color2.B.ToString("x").PadLeft(2, '0') + "\",\n", dest);
}
else
{
WriteASCII("\"" + str2 + " c None\",\n", dest);
}
dictionary.Add(pair.Key, str2);
}
WriteASCII("/* pixels */\n", dest);
for (int k = 0; k < height; k++)
{
string str5 = "\"";
for (int n = 0; n < width; n++)
{
string str6;
int num13 = ColorHash(img.GetPixel((uint)n, (uint)k));
if (!dictionary.TryGetValue(num13, out str6))
{
throw new Exception("Colour missing from the stringList, weird");
}
str5 = str5 + str6;
}
if (k == (height - 1))
{
str5 = str5 + "\"\n";
}
else
{
str5 = str5 + "\",\n";
}
WriteASCII(str5, dest);
}
WriteASCII("};\n", dest);
}