/// <summary>
/// Applies the pattern described in this object to the specified bitmap.
/// </summary>
/// <param name="b">A bitmap to apply the pattern to.</param>
/// <remarks>For speed critical operation use this function with a preallocated bitmap rather than call makeBitmap. <see cref="pattern.makeBitmap"/></remarks>
public override void applyPattern(ref Bitmap b)
{
float perX = 0.0f, perY = 0.0f;
float stepX = 1.0f / (float)b.Width, stepY = 1.0f / (float)b.Height;
QColor col = Color.Blue;
QColor qcol1 = (QColor)topLeft, qcol2 = (QColor)topRight, qcol3 = (QColor)bottomLeft, qcol4 = (QColor)bottomRight;
BitmapData bd = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
///added i and j to fix a bug
///int i=0,j=0;
unsafe
{
QColor *pixelPtr = (QColor *)bd.Scan0.ToPointer();
QColor t1 = mix(qcol1, qcol3, perY), t2 = mix(qcol2, qcol4, perY);
QColor *end = pixelPtr + (bd.Width * bd.Height);
float endLineValue = 1.0f - (stepX * 0.9f);
for (; pixelPtr < end; pixelPtr++)
{
//col = mix(mix(qcol1, qcol2, perX), mix(qcol3, qcol4, perX), perY);
///perX = stepX * i++;
col = mix(t1, t2, perX);
*pixelPtr = *(&col);
perX += stepX;
if (perX > endLineValue) //stupid float comparison
///if(i>=bd.Width)
{
///i=0;
perX = 0.0f;
//fast but fp accumulation problem
perY += stepY;
///perY = stepY * j++;
t1 = mix(qcol1, qcol3, perY);
t2 = mix(qcol2, qcol4, perY);
}
}
}
b.UnlockBits(bd);
}
/// <summary>
/// Applies the pattern described in this object to the specified bitmap.
/// </summary>
/// <param name="b">A bitmap to apply the pattern to.</param>
/// <remarks>For speed critical operation use this function with a preallocated bitmap rather than call makeBitmap. <see cref="pattern.makeBitmap"/></remarks>
public override void applyPattern(ref Bitmap b)
{
//int i,j;
float centreX = 0.5f, centreY = 0.5f;
float[] sinLut = new float[256] {
0.000000f, 0.012320f, 0.024637f, 0.036951f, 0.049260f, 0.061561f, 0.073853f, 0.086133f, 0.098400f, 0.110653f, 0.122888f, 0.135105f, 0.147302f, 0.159476f, 0.171626f, 0.183750f, 0.195845f, 0.207912f, 0.219946f, 0.231948f, 0.243914f, 0.255843f, 0.267733f, 0.279583f, 0.291390f, 0.303153f, 0.314870f, 0.326539f, 0.338158f, 0.349727f, 0.361242f, 0.372702f, 0.384106f, 0.395451f, 0.406737f, 0.417960f, 0.429121f, 0.440216f, 0.451244f, 0.462204f, 0.473094f, 0.483911f, 0.494656f, 0.505325f, 0.515918f,
0.526432f, 0.536867f, 0.547220f, 0.557489f, 0.567675f, 0.577774f, 0.587785f, 0.597707f, 0.607539f, 0.617278f, 0.626924f, 0.636474f, 0.645928f, 0.655284f, 0.664540f, 0.673696f, 0.682749f, 0.691698f, 0.700543f, 0.709281f, 0.717912f, 0.726434f, 0.734845f, 0.743145f, 0.751332f, 0.759405f, 0.767363f, 0.775204f, 0.782928f, 0.790532f, 0.798017f, 0.805381f, 0.812622f, 0.819740f, 0.826734f, 0.833602f, 0.840344f, 0.846958f, 0.853444f, 0.859800f, 0.866025f, 0.872120f, 0.878081f, 0.883910f, 0.889604f,
0.895163f, 0.900587f, 0.905873f, 0.911023f, 0.916034f, 0.920906f, 0.925638f, 0.930229f, 0.934680f, 0.938988f, 0.943154f, 0.947177f, 0.951057f, 0.954791f, 0.958381f, 0.961826f, 0.965124f, 0.968276f, 0.971281f, 0.974139f, 0.976848f, 0.979410f, 0.981823f, 0.984086f, 0.986201f, 0.988165f, 0.989980f, 0.991645f, 0.993159f, 0.994522f, 0.995734f, 0.996795f, 0.997705f, 0.998464f, 0.999070f, 0.999526f, 0.999829f, 0.999981f, 0.999981f, 0.999829f, 0.999526f, 0.999070f, 0.998464f, 0.997705f, 0.996795f,
0.995734f, 0.994522f, 0.993159f, 0.991645f, 0.989980f, 0.988165f, 0.986201f, 0.984086f, 0.981823f, 0.979410f, 0.976848f, 0.974139f, 0.971281f, 0.968276f, 0.965124f, 0.961826f, 0.958381f, 0.954791f, 0.951057f, 0.947177f, 0.943154f, 0.938988f, 0.934680f, 0.930229f, 0.925638f, 0.920906f, 0.916034f, 0.911023f, 0.905873f, 0.900587f, 0.895163f, 0.889604f, 0.883910f, 0.878081f, 0.872120f, 0.866025f, 0.859800f, 0.853444f, 0.846958f, 0.840344f, 0.833602f, 0.826734f, 0.819740f, 0.812622f, 0.805381f,
0.798017f, 0.790532f, 0.782928f, 0.775204f, 0.767363f, 0.759405f, 0.751332f, 0.743145f, 0.734845f, 0.726434f, 0.717912f, 0.709281f, 0.700543f, 0.691698f, 0.682749f, 0.673696f, 0.664540f, 0.655284f, 0.645928f, 0.636474f, 0.626924f, 0.617278f, 0.607539f, 0.597707f, 0.587785f, 0.577774f, 0.567675f, 0.557489f, 0.547220f, 0.536867f, 0.526432f, 0.515918f, 0.505325f, 0.494656f, 0.483911f, 0.473094f, 0.462204f, 0.451244f, 0.440216f, 0.429121f, 0.417960f, 0.406737f, 0.395451f, 0.384106f, 0.372702f,
0.361242f, 0.349727f, 0.338158f, 0.326539f, 0.314870f, 0.303153f, 0.291390f, 0.279583f, 0.267733f, 0.255843f, 0.243914f, 0.231948f, 0.219946f, 0.207912f, 0.195845f, 0.183750f, 0.171626f, 0.159476f, 0.147302f, 0.135105f, 0.122888f, 0.110653f, 0.098400f, 0.086133f, 0.073853f, 0.061561f, 0.049260f, 0.036951f, 0.024637f, 0.012320f, 0.000000f
};
float perX = 0.0f, perY = 0.0f;
float stepX = 1.0f / (float)b.Width, stepY = 1.0f / (float)b.Height;
QColor col = Color.Blue;
QColor qcol1 = (QColor)col1, qcol2 = (QColor)col2;
float endLineValue = 1.0f - (stepX * 0.9f);
BitmapData bd = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
unsafe
{
QColor *pixelPtr = (QColor *)bd.Scan0.ToPointer();
float d;
QColor *end = pixelPtr + (bd.Width * bd.Height);
for (; pixelPtr < end; pixelPtr++)
{
d = dist(perX, perY, centreX, centreY);
col = mix(col1, col2, sinLut[(byte)(d * 255 * (waveLenth))]);
*pixelPtr = *(&col);
perX += stepX;
if (perX > endLineValue)
{
perX = 0.0f;
perY += stepY;
}
}
}
b.UnlockBits(bd);
}
