public capex.image.ImageResizer.IndexMovingBuffer move(int n)
{
var v = new capex.image.ImageResizer.IndexMovingBuffer();
v.setBuf(buf);
v.setIndex(v.getIndex() + n);
return(v);
}
public static capex.image.BitmapBuffer resizeBicubic(capex.image.BitmapBuffer bb, int anw, int anh)
{
if (anw == 0 || anh == 0)
{
return(null);
}
if (anw < 0 && anh < 0)
{
return(bb);
}
var sb = bb.getBuffer();
if (sb == null)
{
return(null);
}
var w = bb.getWidth();
var h = bb.getHeight();
var scaler = 1.00;
var nw = anw;
var nh = anh;
if (nw < 0)
{
scaler = (double)nh / (double)h;
}
else if (nh < 0)
{
scaler = (double)nw / (double)w;
}
if (scaler != 1.00)
{
nw = (int)((double)w * scaler);
nh = (int)((double)h * scaler);
}
var v = new byte[nw * nh * 4];
capex.image.ImageResizer.IndexMovingBuffer destp = null;
destp.setBuf(v);
var y = 0;
var sx = (double)nw / (double)w;
var sy = (double)nh / (double)h;
var matrix = capex.util.Matrix33.forScale(sx, sy);
matrix = capex.util.Matrix33.invertMatrix(matrix);
var uinc = matrix.v[0];
var vinc = matrix.v[1];
var winc = matrix.v[2];
var pixels = capex.image.RGBAPixelIntegerBuffer.create(sb, w, h);
var pixrgn = capex.image.PixelRegionBuffer.forRgbaPixels(pixels, 4, 4);
var tu = new double[5];
var tv = new double[5];
var tw = new double[5];
var su = new double[5];
var sv = new double[5];
for (y = 0; y < nh; y++)
{
capex.image.ImageResizer.untransformCoords(matrix, 0, y, tu, tv, tw);
var width = nw;
while (width-- > 0)
{
var i = 0;
capex.image.ImageResizer.normalizeCoords(5, tu, tv, tw, su, sv);
if (capex.image.ImageResizer.superSampleDtest(su[1], sv[1], su[2], sv[2], su[3], sv[3], su[4], sv[4]))
{
capex.image.ImageResizer.sampleAdapt(pixels, su[0], sv[0], su[1], sv[1], su[2], sv[2], su[3], sv[3], su[4], sv[4], destp);
}
else
{
capex.image.ImageResizer.sampleCubic(pixrgn, su[0], sv[0], destp);
}
destp = destp.move(4);
for (i = 0; i < 5; i++)
{
tu[i] = tu[i] + uinc;
tv[i] = tv[i] + vinc;
tw[i] = tw[i] + winc;
}
}
}
return(capex.image.BitmapBuffer.create(v, nw, nh));
}
public static void sampleCubic(capex.image.PixelRegionBuffer src, double su, double sv, capex.image.ImageResizer.IndexMovingBuffer dest)
{
var aval = 0.00;
var arecip = 0.00;
var i = 0;
var iu = (int)cape.Math.floor(su);
var iv = (int)cape.Math.floor(sv);
var stride = src.getStride();
var du = 0.00;
var dv = 0.00;
var br = src.getBufferRegion(iu - 1, iv - 1);
if (br == null)
{
return;
}
dest.setBuf(br);
du = su - iu;
dv = sv - iv;
aval = capex.image.ImageResizer.drawableTransformCubic(dv, capex.image.ImageResizer.cubicRow(du, dest.move(3 + stride * 0)), capex.image.ImageResizer.cubicRow(du, dest.move(3 + stride * 1)), capex.image.ImageResizer.cubicRow(du, dest.move(3 + stride * 2)), capex.image.ImageResizer.cubicRow(du, dest.move(3 + stride * 3)));
if (aval <= 0)
{
arecip = 0.00;
cape.Buffer.setByte(dest.getBuf(), (long)3, (byte)0);
}
else if (aval > 255.00)
{
arecip = 1.00 / aval;
cape.Buffer.setByte(dest.getBuf(), (long)3, (byte)255);
}
else
{
arecip = 1.00 / aval;
cape.Buffer.setByte(dest.getBuf(), (long)3, (byte)((int)cape.Math.rint(aval)));
}
for (i = 0; i < 3; i++)
{
var v = (int)cape.Math.rint(arecip * capex.image.ImageResizer.drawableTransformCubic(dv, capex.image.ImageResizer.cubicScaledRow(du, dest.move(i + stride * 0), dest.move(3 + stride * 0)), capex.image.ImageResizer.cubicScaledRow(du, dest.move(i + stride * 1), dest.move(3 + stride * 1)), capex.image.ImageResizer.cubicScaledRow(du, dest.move(i + stride * 2), dest.move(3 + stride * 2)), capex.image.ImageResizer.cubicScaledRow(du, dest.move(i + stride * 3), dest.move(3 + stride * 3))));
cape.Buffer.setByte(dest.getBuf(), (long)i, (byte)capex.image.ImageFilterUtil.clamp((double)v));
}
}
public static int cubicScaledRow(double dx, capex.image.ImageResizer.IndexMovingBuffer row, capex.image.ImageResizer.IndexMovingBuffer arow)
{
return((int)capex.image.ImageResizer.drawableTransformCubic(dx, (int)(cape.Buffer.getByte(row.getBuf(), (long)0) * cape.Buffer.getByte(arow.getBuf(), (long)0)), (int)(cape.Buffer.getByte(row.getBuf(), (long)4) * cape.Buffer.getByte(arow.getBuf(), (long)4)), (int)(cape.Buffer.getByte(row.getBuf(), (long)8) * cape.Buffer.getByte(arow.getBuf(), (long)8)), (int)(cape.Buffer.getByte(row.getBuf(), (long)12) * cape.Buffer.getByte(arow.getBuf(), (long)12))));
}
public static void sampleAdapt(capex.image.RGBAPixelIntegerBuffer src, double xc, double yc, double x0, double y0, double x1, double y1, double x2, double y2, double x3, double y3, capex.image.ImageResizer.IndexMovingBuffer dest)
{
var cc = 0;
var i = 0;
var c = new int[4];
var cciv = 0;
capex.image.ImageResizer.getSample(src, capex.image.ImageResizer.double2Fixed(xc), capex.image.ImageResizer.double2Fixed(yc), capex.image.ImageResizer.double2Fixed(x0), capex.image.ImageResizer.double2Fixed(y0), capex.image.ImageResizer.double2Fixed(x1), capex.image.ImageResizer.double2Fixed(y1), capex.image.ImageResizer.double2Fixed(x2), capex.image.ImageResizer.double2Fixed(y2), capex.image.ImageResizer.double2Fixed(x3), capex.image.ImageResizer.double2Fixed(y3), cciv, 3, c);
cc = cciv;
if (cc == 0)
{
cc = 1;
}
var aa = c[3] / cc;
cape.Buffer.setByte(dest.getBuf(), (long)3, (byte)aa);
if (aa != 0)
{
for (i = 0; i < 3; i++)
{
cape.Buffer.setByte(dest.getBuf(), (long)i, (byte)(c[i] / cc * 255 / aa));
}
}
else
{
for (i = 0; i < 3; i++)
{
cape.Buffer.setByte(dest.getBuf(), (long)i, (byte)0);
}
}
}
