| public SetPixel ( int x, int y, uint color ) : bool | ||
| x | int | |
| y | int | |
| color | uint | |
| return | bool | |
public void CopyFromSkipTransparent()
{
var result = new PixelBuffer(PixelFormat.ARGB8888, new Size(30, 20));
src.SetPixel(0, 0, Color.FromArgb(0, 255, 255, 255));
result.CopyFrom(src, new Rectangle(Point.Zero, src.Size), Point.Zero, false, true);
VerifyCopyResult(result);
}
public void ManipulateBuffer(PixelBuffer buffer)
{
for (int i = 0; i < 10; i++)
{
buffer.SetPixel(i, Color.Magenta);
}
}
private static void RasterizeBlockingSplines(TerrainComponent terrain, TerrainVegetationComponent component, PixelBuffer mask, int maskChannel, float terrainOffset)
{
foreach (var spline in component.BlockingSplines)
{
var vertices = new FastList <Splines.VertexPositionNormalTangentColorTexture>();
var indices = new FastList <int>();
Splines.SplineMeshBuilder.CreateSplineMesh(spline, vertices, indices);
for (var i = 0; i < indices.Count; i += 3)
{
var vt1f = vertices[indices[i + 0]].Position;
var vt2f = vertices[indices[i + 1]].Position;
var vt3f = vertices[indices[i + 2]].Position;
vt1f = (vt1f + terrainOffset) / terrain.Size * mask.Width;
vt2f = (vt2f + terrainOffset) / terrain.Size * mask.Width;
vt3f = (vt3f + terrainOffset) / terrain.Size * mask.Width;
// Just ignore Y axis, works well enoguh for splines but if we
// support generic volumes in the future then we might want to project it a bit more properly
// or maybe just do an offscreen render pass on the gpu ...
var vt1 = new Int2((int)vt1f.X, (int)vt1f.Z);
var vt2 = new Int2((int)vt2f.X, (int)vt2f.Z);
var vt3 = new Int2((int)vt3f.X, (int)vt3f.Z);
// Calculate bounding box
var maxX = Math.Max(vt1.X, Math.Max(vt2.X, vt3.X));
var minX = Math.Min(vt1.X, Math.Min(vt2.X, vt3.X));
var maxY = Math.Max(vt1.Y, Math.Max(vt2.Y, vt3.Y));
var minY = Math.Min(vt1.Y, Math.Min(vt2.Y, vt3.Y));
// Triangle intersection
var vs1 = vt2 - vt1;
var vs2 = vt3 - vt1;
for (var x = minX; x <= maxX; x++)
{
for (var y = minY; y < maxY; y++)
{
var q = new Int2(x - vt1.X, y - vt1.Y);
var s = (float)CrossProduct(q, vs2) / CrossProduct(vs1, vs2);
var t = (float)CrossProduct(vs1, q) / CrossProduct(vs1, vs2);
if (s >= 0 && t >= 0 && (s + t) <= 1)
{
var currentPixel = mask.GetPixel <Color>(x, y);
currentPixel[maskChannel] = 0;
mask.SetPixel <Color>(x, y, currentPixel);
}
}
}
}
}
}
public void Init()
{
src = new PixelBuffer(PixelFormat.ABGR8888, new Size(30, 20));
for (int j = 0; j < src.Height; j++)
{
for (int i = 0; i < src.Width; i++)
{
src.SetPixel(i, j, SourceColorAt(i, j));
}
}
}
void Mouse_MouseMove(InputEventArgs e)
{
Color clr;
Point pt = new Point(e.MousePosition.X - imageLocation.X,
e.MousePosition.Y - imageLocation.Y);
if (buffer.IsPointValid(pt) == false)
{
frm.lblPixelColor.Text = "No Pixel";
return;
}
if (Mouse.Buttons[Mouse.MouseButtons.Primary])
{
// do a circle of radius 3
for (int y = -3; y <= 3; y++)
{
for (int x = -3; x <= 3; x++)
{
// if we're out of the circle radius, go to the next iteration.
if (x * x + y * y > 9)
{
continue;
}
Point newpt = new Point(pt.X + x, pt.Y + y);
if (newpt.X < 0 || newpt.X >= buffer.Width)
{
continue;
}
if (newpt.Y < 0 || newpt.Y >= buffer.Height)
{
continue;
}
buffer.SetPixel(newpt.X, newpt.Y, Color.FromArgb(frm.btnColor.BackColor.ToArgb()));
}
}
image.WritePixels(buffer);
}
clr = buffer.GetPixel(e.MousePosition.X - imageLocation.X,
e.MousePosition.Y - imageLocation.Y);
frm.lblPixelColor.Text =
string.Format("R: {0} G: {1}\r\nB: {2} A: {3}",
FormatComponent(clr.R), FormatComponent(clr.G),
FormatComponent(clr.B), FormatComponent(clr.A));
}
public void PixelsEqualSameFormat()
{
var result = new PixelBuffer(PixelFormat.ABGR8888, src.Size);
result.CopyFrom(src, new Rectangle(Point.Zero, src.Size), Point.Zero, false);
VerifyCopyResult(result);
Assert.IsTrue(PixelBuffer.PixelsEqual(result, src));
result.SetPixel(0, 0, Color.Black);
Assert.IsFalse(PixelBuffer.PixelsEqual(src, result));
}
/// <summary>
/// Creates a normal map by interpreting the pixel data in the passed buffer
/// as a height map.
/// </summary>
/// <param name="buffer"></param>
/// <param name="normalStr">The weight for the x-y components of the normals in
/// the normal map. Smaller values make the normal map more subtle.
/// Values in the range 0.5f to 3.0f are reasonable.</param>
/// <returns></returns>
public static PixelBuffer NormalMapFromHeightMap(PixelBuffer buffer, float normalStr)
{
int[,] heights = new int[buffer.Width, buffer.Height];
for (int j = 0; j < buffer.Height; j++)
{
for (int i = 0; i < buffer.Width; i++)
{
heights[i, j] = (int)(buffer.GetPixel(i, j).Intensity *short.MaxValue);
}
}
PixelBuffer result = new PixelBuffer(buffer.PixelFormat, buffer.Size);
int[,] square = new int[3, 3];
for (int j = 0; j < result.Height; j++)
{
for (int i = 0; i < result.Width; i++)
{
GetSquare(square, heights, i, j);
// sobel operator:
int diffx = square[0, 0] - square[2, 0] +
2 * (square[0, 1] - square[2, 1]) +
square[0, 2] - square[2, 0];
int diffy = square[0, 0] + 2 * square[1, 0] + square[0, 2] +
-square[0, 2] - 2 * square[1, 2] - square[2, 2];
Vector3f vec = new Vector3f(diffx / (float)short.MaxValue, diffy / (float)short.MaxValue, 0);
vec *= normalStr;
vec.Z = 1;
vec = vec.Normalize();
vec = vec / 2;
vec.X += 0.5f; vec.Y += 0.5f; vec.Z += 0.5f;
Color clr = Color.FromRgb((int)(vec.X * 255),
(int)(vec.Y * 255),
(int)(vec.Z * 255));
result.SetPixel(i, j, clr);
}
}
return(result);
}
private static void PostProcessFont(BitmapFontOptions options, System.Drawing.Bitmap bmp)
{
if (options.EdgeOptions == BitmapFontEdgeOptions.None)
{
return;
}
Drawing.Imaging.BitmapData data = bmp.LockBits(
new Drawing.Rectangle(Drawing.Point.Empty, bmp.Size),
Drawing.Imaging.ImageLockMode.ReadWrite, Drawing.Imaging.PixelFormat.Format32bppArgb);
PixelFormat bitmapFormat = PixelFormat.BGRA8888;
PixelBuffer buffer = new PixelBuffer(bitmapFormat, Interop.Convert(bmp.Size),
data.Scan0, bitmapFormat, data.Stride);
// now convert pixels to gray scale.
for (int j = 0; j < buffer.Height; j++)
{
for (int i = 0; i < buffer.Width; i++)
{
Color clr = buffer.GetPixel(i, j);
if (clr.ToArgb() == 0)
{
continue;
}
int alpha = clr.A;
int intensity = (int)Math.Round(0.30 * clr.R + 0.59 * clr.G + 0.11 * clr.B);
byte value = (byte)intensity;
System.Diagnostics.Debug.Assert(0 <= intensity && intensity <= 255);
if (intensity < 0)
{
intensity = 0;
}
if (intensity > 255)
{
intensity = 255;
}
switch (options.EdgeOptions)
{
case BitmapFontEdgeOptions.IntensityAlphaWhite:
clr = Color.FromArgb(value, Color.White);
break;
case BitmapFontEdgeOptions.IntensityAlphaColor:
clr = Color.FromArgb(value, clr);
break;
}
buffer.SetPixel(i, j, clr);
}
}
System.Runtime.InteropServices.Marshal.Copy(
buffer.Data, 0, data.Scan0, buffer.Data.Length);
bmp.UnlockBits(data);
}
public void Run(string[] args)
{
using (new DisplayWindowBuilder(args)
.BackbufferSize(800, 600)
.QuitOnClose()
.Build())
{
PixelBuffer pbMaskBg = PixelBuffer.FromFile("mask_bg-bricks.png");
PixelBuffer pbBg = PixelBuffer.FromFile("bg-bricks.png");
PixelBuffer pbMaskCircle = PixelBuffer.FromFile("mask_circle.png");
Surface surfRealBg = new Surface(pbMaskBg.Size);
for (int x = 0; x < pbMaskBg.Width; x++)
{
for (int y = 0; y < pbMaskBg.Height; y++)
{
if (pbMaskBg.GetPixel(x, y) == Color.FromArgb(255, 0, 0, 0))
{
pbBg.SetPixel(x, y, Color.FromArgb(0, 0, 0, 0));
}
}
}
surfRealBg.WritePixels(pbBg);
bool mouseDown = false;
Input.Unhandled.MouseDown += (sender, e) =>
{
if (e.MouseButton == MouseButton.Primary)
{
mouseDown = true;
}
};
Input.Unhandled.MouseUp += (sender, e) =>
{
if (e.MouseButton == MouseButton.Primary)
{
mouseDown = false;
}
};
Input.Unhandled.MouseMove += (sender, e) => mouse = e.MousePosition;
while (AgateApp.IsAlive)
{
Display.CurrentWindow.Title = Display.FramesPerSecond.ToString();
Display.BeginFrame();
if (Input.Unhandled.Keys[KeyCode.Escape])
{
return;
}
if (mouseDown)
{
int mX = mouse.X;
int mY = mouse.Y;
Rectangle rect = new Rectangle(mX, mY, pbMaskCircle.Width, pbMaskCircle.Height);
Point p = new Point(mX, mY);
for (int x = 0; x < pbMaskCircle.Width; x++)
{
if (mX + x >= pbBg.Width)
{
break;
}
for (int y = 0; y < pbMaskCircle.Height; y++)
{
if (mY + y >= pbBg.Height)
{
break;
}
if (pbMaskCircle.GetPixel(x, y) == Color.FromArgb(255, 0, 0, 0))
{
pbBg.SetPixel(mX + x, mY + y, Color.FromArgb(0, 0, 0, 0));
}
}
}
surfRealBg.WritePixels(pbBg, rect, p);
}
Display.Clear(Color.Blue);
surfRealBg.Draw();
Display.EndFrame();
AgateApp.KeepAlive();
}
}
}
