本文整理匯總了C#中System.Image.Clear方法的典型用法代碼示例。如果您正苦於以下問題：C# Image.Clear方法的具體用法？C# Image.Clear怎麽用？C# Image.Clear使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Image的用法示例。
在下文中一共展示了Image.Clear方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: ReadFrameColors
//.........這裏部分代碼省略.........
// If so then we read lines at predetermined offsets.
// When an entire image height worth of offset lines has been read we consider this a pass.
// With each pass the number of offset lines changes and the starting line changes.
if (iY >= descriptor.Height)
{
iPass++;
switch (iPass)
{
case 1:
iY = 4;
break;
case 2:
iY = 2;
iInc = 4;
break;
case 3:
iY = 1;
iInc = 2;
break;
}
}
writeY = iY + descriptor.Top;
iY += iInc;
}
else
{
writeY = y;
}
for (int x = descriptor.Left; x < descriptor.Left + descriptor.Width; x++)
{
offset = writeY * imageWidth + x;
index = indices[i];
if (_graphicsControl == null ||
_graphicsControl.TransparencyFlag == false ||
_graphicsControl.TransparencyIndex != index)
{
_currentFrame[offset * 4 + 0] = colorTable[index * 3 + 0];
_currentFrame[offset * 4 + 1] = colorTable[index * 3 + 1];
_currentFrame[offset * 4 + 2] = colorTable[index * 3 + 2];
_currentFrame[offset * 4 + 3] = (byte)255;
}
i++;
}
}
byte[] pixels = new byte[imageWidth * imageHeight * 4];
Array.Copy(_currentFrame, pixels, pixels.Length);
_currentFrame = new byte[imageWidth * imageHeight * 4];
Image frame = new Image(imageWidth, imageHeight);
int indx = 0;
byte r, g, b, a;
for (uint y = 0; y < frame.Height; y++)
{
for (uint x = 0; x < frame.Width; x++)
{
r = pixels[indx];
indx++;
g = pixels[indx];
indx++;
b = pixels[indx];
indx++;
a = pixels[indx];
indx++;
frame.SetPixel(x, y, new Pixel(r, g, b, a));
}
}
pixels = null;
System.GC.Collect();
_image.AddFrame(frame);
if (_graphicsControl != null)
{
if (_graphicsControl.DelayTime > 0)
{
_image.TimePerFrame = _graphicsControl.DelayTime;
}
if (_graphicsControl.DisposalMethod == DisposalMethod.RestoreToBackground)
{
Image im = new Image(imageWidth, imageHeight);
im.Clear(new Pixel(true));
_image.AddFrame(im);
_image.Loop = false;
}
else if (_graphicsControl.DisposalMethod == DisposalMethod.RestoreToPrevious)
{
_image.Loop = true;
}
}
}示例2: calculateSimilarityMap
private static Image<Gray, short> calculateSimilarityMap(ITemplate template, LinearizedMaps maps, Rectangle searchArea)
{
Debug.Assert(searchArea.Right <= maps.ImageSize.Width &&
searchArea.Bottom <= maps.ImageSize.Height);
Debug.Assert(template.Size.Width + searchArea.X < maps.ImageSize.Width &&
template.Size.Height + searchArea.Y < maps.ImageSize.Height);
int width = searchArea.Width / maps.NeigborhoodSize;
int height = searchArea.Height / maps.NeigborhoodSize;
Image<Gray, short> similarityMap = new Image<Gray, short>(width, height, LinearizedMaps.MAP_STRIDE_ALLIGNMENT); //performance penalty (alloc, dealloc)!!!
using (var buffer = new Image<Gray, byte>(width, height, LinearizedMaps.MAP_STRIDE_ALLIGNMENT)) //performance penalty (alloc, dealloc)!!!
{
int nAddsInBuffer = 0;
foreach (var feature in template.Features)
{
var position = new Point(feature.X + searchArea.X, feature.Y + searchArea.Y); //shifted position
Point mapPoint;
var neighbourMap = maps.GetMapElement(position, feature.AngleIndex, out mapPoint);
neighbourMap.AddTo(buffer, mapPoint);
nAddsInBuffer++;
if (nAddsInBuffer / GlobalParameters.MAX_SUPPORTED_NUM_OF_FEATURES_ADDDED_AS_BYTE != 0)
{
buffer.AddTo(similarityMap);
buffer.Clear();
nAddsInBuffer = 0;
}
}
bool finalAdd = (template.Features.Length % GlobalParameters.MAX_SUPPORTED_NUM_OF_FEATURES_ADDDED_AS_BYTE != 0) ? true : false;
if (finalAdd)
{
buffer.AddTo(similarityMap);
}
}
return similarityMap;
}