unsafe void generate_alpha_mask(int cx, int cy)
{
m_alpha_buf = new byte[cx * cy];
fixed(byte *pAlphaBuffer = m_alpha_buf)
{
#if USE_CLIPPING_ALPHA_MASK
m_alpha_mask_rbuf.attach(pAlphaBuffer + 20 * cx + 20, (uint)cx - 40, (uint)cy - 40, cx, 1);
#else
m_alpha_mask_rbuf.attach(pAlphaBuffer, (uint)cx, (uint)cy, cx, 1);
#endif
FormatGray pixf = new FormatGray(m_alpha_mask_rbuf, new BlenderGray(), 1, 0);
FormatClippingProxy clippingProxy = new FormatClippingProxy(pixf);
ScanlinePacked8 sl = new ScanlinePacked8();
clippingProxy.Clear(new RGBA_Doubles(0));
VertexSource.Ellipse <T> ell = new AGG.VertexSource.Ellipse <T>();
System.Random randGenerator = new Random(1432);
int i;
int num = (int)m_num_cb.value().ToInt();
for (i = 0; i < num; i++)
{
if (i == num - 1)
{
ell.Init(width().Divide(2), height().Divide(2), M.New <T>(110), M.New <T>(110), 100);
g_rasterizer.AddPath(ell);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, sl, new RGBA_Bytes(0, 0, 0, 255));
ell.Init(ell.X, ell.Y, ell.RX.Subtract(10), ell.RY.Subtract(10), 100);
g_rasterizer.AddPath(ell);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, sl, new RGBA_Bytes(255, 0, 0, 255));
}
else
{
ell.Init(randGenerator.Next() % cx,
randGenerator.Next() % cy,
randGenerator.Next() % 100 + 20,
randGenerator.Next() % 100 + 20,
100);
// set the color to draw into the alpha channel.
// there is not very much reason to set the alpha as you will get the amount of
// transparency based on the color you draw. (you might want some type of different edeg effect but it will be minor).
g_rasterizer.AddPath(ell);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, sl, new RGBA_Bytes((uint)((float)i / (float)num * 255), 0, 0, 255));
}
}
m_alpha_mask_rbuf.dettachBuffer();
}
}
public override void OnDraw()
{
IPixelFormat pixf;
if (this.bpp() == 32)
{
pixf = new FormatRGBA(rbuf_window(), new BlenderBGRA());
//pixf = new pixfmt_alpha_blend_rgba32(rbuf_window(), new blender_rgba32());
}
else
{
if (bpp() != 24)
{
throw new System.NotSupportedException();
}
pixf = new FormatRGB(rbuf_window(), new BlenderBGR());
}
FormatClippingProxy clippingProxy = new FormatClippingProxy(pixf);
clippingProxy.Clear(new RGBA_Doubles(1, 1, 1));
g_rasterizer.SetVectorClipBox(M.Zero <T>(), M.Zero <T>(), width(), height());
if (m_trans_type.cur_item() == 0)
{
Bilinear <T> tr = new Bilinear <T>(g_x1, g_y1, g_x2, g_y2, m_quad.polygon());
if (tr.IsValid())
{
//--------------------------
// Render transformed lion
//
ConvTransform <T> trans = new ConvTransform <T>(g_path, tr);
Renderer <T> .RenderSolidAllPaths(clippingProxy, g_rasterizer, g_scanline, trans, g_colors, g_path_idx, g_npaths);
//--------------------------
//--------------------------
// Render transformed ellipse
//
VertexSource.Ellipse <T> ell = new AGG.VertexSource.Ellipse <T>(g_x1.Add(g_x2).Multiply(0.5), g_y1.Add(g_y2).Multiply(0.5),
g_x2.Subtract(g_x1).Multiply(0.5), g_y2.Subtract(g_y1).Multiply(0.5),
200);
ConvStroke <T> ell_stroke = new ConvStroke <T>(ell);
ell_stroke.Width = M.New <T>(3.0);
ConvTransform <T> trans_ell = new ConvTransform <T>(ell, tr);
ConvTransform <T> trans_ell_stroke = new ConvTransform <T>(ell_stroke, tr);
g_rasterizer.AddPath(trans_ell);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, g_scanline, new RGBA_Bytes(0.5, 0.3, 0.0, 0.3));
g_rasterizer.AddPath(trans_ell_stroke);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, g_scanline, new RGBA_Bytes(0.0, 0.3, 0.2, 1.0));
}
}
else
{
Perspective <T> tr = new Perspective <T>(g_x1, g_y1, g_x2, g_y2, m_quad.polygon());
if (tr.IsValid())
{
// Render transformed lion
ConvTransform <T> trans = new ConvTransform <T>(g_path, tr);
Renderer <T> .RenderSolidAllPaths(clippingProxy, g_rasterizer, g_scanline, trans, g_colors, g_path_idx, g_npaths);
// Render transformed ellipse
VertexSource.Ellipse <T> FilledEllipse = new AGG.VertexSource.Ellipse <T>(g_x1.Add(g_x2).Multiply(0.5), g_y1.Add(g_y2).Multiply(0.5),
g_x2.Subtract(g_x1).Multiply(0.5), g_y2.Subtract(g_y1).Multiply(0.5),
200);
ConvStroke <T> EllipseOutline = new ConvStroke <T>(FilledEllipse);
EllipseOutline.Width = M.New <T>(3.0);
ConvTransform <T> TransformedFilledEllipse = new ConvTransform <T>(FilledEllipse, tr);
ConvTransform <T> TransformedEllipesOutline = new ConvTransform <T>(EllipseOutline, tr);
g_rasterizer.AddPath(TransformedFilledEllipse);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, g_scanline, new RGBA_Bytes(0.5, 0.3, 0.0, 0.3));
g_rasterizer.AddPath(TransformedEllipesOutline);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, g_scanline, new RGBA_Bytes(0.0, 0.3, 0.2, 1.0));
}
}
//--------------------------
// Render the "quad" tool and controls
g_rasterizer.AddPath(m_quad);
Renderer <T> .RenderSolid(clippingProxy, g_rasterizer, g_scanline, new RGBA_Bytes(0, 0.3, 0.5, 0.6));
//m_trans_type.Render(g_rasterizer, g_scanline, clippingProxy);
base.OnDraw();
}
void transform_image(double angle)
{
double width = rbuf_img(0).Width;
double height = rbuf_img(0).Height;
#if SourceDepth24
FormatRGB pixf = new FormatRGB(rbuf_img(0), new BlenderBGR());
FormatRGB pixf_pre = new FormatRGB(rbuf_img(0), new BlenderPreMultBGR());
#else
pixfmt_alpha_blend_rgba32 pixf = new pixfmt_alpha_blend_rgba32(rbuf_img(0), new blender_bgra32());
pixfmt_alpha_blend_rgba32 pixf_pre = new pixfmt_alpha_blend_rgba32(rbuf_img(0), new blender_bgra_pre());
#endif
FormatClippingProxy rb = new FormatClippingProxy(pixf);
FormatClippingProxy rb_pre = new FormatClippingProxy(pixf_pre);
rb.Clear(new RGBA_Doubles(1.0, 1.0, 1.0));
IAffineTransformMatrix <T> src_mtx = MatrixFactory <T> .NewIdentity(VectorDimension.Two);
src_mtx.Translate(MatrixFactory <T> .CreateVector2D(-width / 2.0, -height / 2.0));
src_mtx.RotateAlong(MatrixFactory <T> .CreateVector2D(0, 0), angle * Math.PI / 180.0);
src_mtx.Translate(MatrixFactory <T> .CreateVector2D(width / 2.0, height / 2.0));
IAffineTransformMatrix <T> img_mtx = MatrixFactory <T> .CreateAffine(src_mtx);
img_mtx = img_mtx.Inverse;
double r = width;
if (height < r)
{
r = height;
}
r *= 0.5;
r -= 4.0;
VertexSource.Ellipse <T> ell = new AGG.VertexSource.Ellipse <T>(width / 2.0, height / 2.0, r, r, 200);
ConvTransform <T> tr = new ConvTransform <T>(ell, src_mtx);
m_num_pix += r * r * Math.PI;
SpanInterpolatorLinear <T> interpolator = new SpanInterpolatorLinear <T>(img_mtx);
ImageFilterLookUpTable <T> filter = new ImageFilterLookUpTable <T>();
bool norm = m_normalize.status();
#if SourceDepth24
FormatRGB pixf_img = new FormatRGB(rbuf_img(1), new BlenderBGR());
#else
pixfmt_alpha_blend_rgba32 pixf_img = new pixfmt_alpha_blend_rgba32(rbuf_img(1), new blender_bgra32());
#endif
RasterBufferAccessorClip source = new RasterBufferAccessorClip(pixf_img, RGBA_Doubles.RgbaPre(0, 0, 0, 0));
switch (m_filters.cur_item())
{
case 0:
{
#if SourceDepth24
SpanImageFilterRgbNN <T> sg = new SpanImageFilterRgbNN <T>(source, interpolator);
#else
span_image_filter_rgba_nn sg = new span_image_filter_rgba_nn(source, interpolator);
#endif
m_Rasterizer.AddPath(tr);
Renderer <T> .GenerateAndRender(m_Rasterizer, m_ScanlineUnpacked, rb_pre, m_SpanAllocator, sg);
}
break;
case 1:
{
#if SourceDepth24
//span_image_filter_rgb_bilinear_clip sg = new span_image_filter_rgb_bilinear_clip(pixf_img, rgba.rgba_pre(0, 0.4, 0, 0.5), interpolator);
SpanImageFilterRgbBilinear <T> sg = new SpanImageFilterRgbBilinear <T>(source, interpolator);
#else
//span_image_filter_rgba_bilinear_clip sg = new span_image_filter_rgba_bilinear_clip(pixf_img, rgba.rgba_pre(0, 0, 0, 0), interpolator);
span_image_filter_rgba_bilinear sg = new span_image_filter_rgba_bilinear(source, interpolator);
#endif
m_Rasterizer.AddPath(tr);
Renderer <T> .GenerateAndRender(m_Rasterizer, m_ScanlineUnpacked, rb_pre, m_SpanAllocator, sg);
}
break;
case 5:
case 6:
case 7:
{
switch (m_filters.cur_item())
{
case 5: filter.Calculate(new ImageFilterHanning <T>(), norm); break;
case 6: filter.Calculate(new ImageFilterHamming <T>(), norm); break;
case 7: filter.Calculate(new ImageFilterHermite <T>(), norm); break;
}
SpanImageFilterRgb2x2 <T> sg = new SpanImageFilterRgb2x2 <T>(source, interpolator, filter);
m_Rasterizer.AddPath(tr);
Renderer <T> .GenerateAndRender(m_Rasterizer, m_ScanlineUnpacked, rb_pre, m_SpanAllocator, sg);
}
break;
case 2:
case 3:
case 4:
case 8:
case 9:
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
case 16:
{
switch (m_filters.cur_item())
{
case 2: filter.Calculate(new ImageFilterBicubic <T>(), norm); break;
case 3: filter.Calculate(new ImageFilterSpline16 <T>(), norm); break;
case 4: filter.Calculate(new ImageFilterSpline36 <T>(), norm); break;
case 8: filter.Calculate(new ImageFilterKaiser <T>(), norm); break;
case 9: filter.Calculate(new ImageFilterQuadric <T>(), norm); break;
case 10: filter.Calculate(new ImageFilterCatrom <T>(), norm); break;
case 11: filter.Calculate(new ImageFilterGaussian <T>(), norm); break;
case 12: filter.Calculate(new ImageFilterBessel <T>(), norm); break;
case 13: filter.Calculate(new ImageFilterMitchell <T>(), norm); break;
case 14: filter.Calculate(new ImageFilterSinc <T>(m_radius.value()), norm); break;
case 15: filter.Calculate(new ImageFilterLanczos <T>(m_radius.value()), norm); break;
case 16:
filter.Calculate(new ImageFilterBlackman <T>(m_radius.value()), norm);
break;
}
#if SourceDepth24
SpanImageFilterRgb <T> sg = new SpanImageFilterRgb <T>(source, interpolator, filter);
#else
span_image_filter_rgb sg = new span_image_filter_rgba(source, interpolator, filter);
#endif
m_Rasterizer.AddPath(tr);
Renderer <T> .GenerateAndRender(m_Rasterizer, m_ScanlineUnpacked, rb_pre, m_SpanAllocator, sg);
}
break;
}
}
public override void OnDraw()
{
RasterizerScanlineAA <T> ras = new RasterizerScanlineAA <T>();
ScanlineUnpacked8 sl = new ScanlineUnpacked8();
#if SourceDepth24
FormatRGB pixf = new FormatRGB(rbuf_window(), new BlenderBGR());
#else
FormatRGBA pixf = new FormatRGBA(rbuf_window(), new blender_bgra32());
#endif
FormatClippingProxy clippingProxy = new FormatClippingProxy(pixf);
clippingProxy.Clear(new RGBA_Doubles(0, 0, 0));
m_profile.text_size(8.0);
//m_profile.Render(ras, sl, clippingProxy);
//m_spline_r.Render(ras, sl, clippingProxy);
//m_spline_g.Render(ras, sl, clippingProxy);
//m_spline_b.Render(ras, sl, clippingProxy);
//m_spline_a.Render(ras, sl, clippingProxy);
//m_GradTypeRBox.Render(ras, sl, clippingProxy);
//m_GradWrapRBox.Render(ras, sl, clippingProxy);
// draw a background to show how the alpha is working
int RectWidth = 32;
int xoffset = 238;
int yoffset = 171;
for (int i = 0; i < 7; i++)
{
for (int j = 0; j < 7; j++)
{
if ((i + j) % 2 != 0)
{
VertexSource.RoundedRect <T> rect = new VertexSource.RoundedRect <T>(i * RectWidth + xoffset, j * RectWidth + yoffset,
(i + 1) * RectWidth + xoffset, (j + 1) * RectWidth + yoffset, 2);
rect.NormalizeRadius();
// Drawing as an outline
ras.AddPath(rect);
Renderer <T> .RenderSolid(clippingProxy, ras, sl, new RGBA_Bytes(.9, .9, .9));
}
}
}
double ini_scale = 1.0;
IAffineTransformMatrix <T> mtx1 = MatrixFactory <T> .NewIdentity(VectorDimension.Two);
mtx1.Scale(MatrixFactory <T> .CreateVector2D(ini_scale, ini_scale));
mtx1.Translate(MatrixFactory <T> .CreateVector2D(center_x, center_y));
mtx1.Add(trans_affine_resizing());
VertexSource.Ellipse <T> e1 = new AGG.VertexSource.Ellipse <T>();
e1.Init(0.0, 0.0, 110.0, 110.0, 64);
IAffineTransformMatrix <T> mtx_g1 = MatrixFactory <T> .NewIdentity(VectorDimension.Two);
mtx_g1.Scale(MatrixFactory <T> .CreateVector2D(ini_scale, ini_scale));
mtx_g1.Scale(MatrixFactory <T> .CreateVector2D(m_SaveData.m_scale, m_SaveData.m_scale));
mtx_g1.Scale(MatrixFactory <T> .CreateVector2D(m_scale_x, m_scale_y));
mtx_g1.RotateAlong(MatrixFactory <T> .CreateVector2D(0, 0), m_SaveData.m_angle.ToDouble());
mtx_g1.Translate(MatrixFactory <T> .CreateVector2D(m_SaveData.m_center_x, m_SaveData.m_center_y));
mtx_g1.Add(trans_affine_resizing());
mtx_g1 = mtx_g1.Inverse;
RGBA_Bytes[] color_profile = new RGBA_Bytes[256]; // color_type is defined in pixel_formats.h
for (int i = 0; i < 256; i++)
{
color_profile[i] = new RGBA_Bytes(m_spline_r.spline()[i].ToInt(),
m_spline_g.spline()[i].ToInt(),
m_spline_b.spline()[i].ToInt(),
m_spline_a.spline()[i].ToInt());
}
ConvTransform <T> t1 = new ConvTransform <T>(e1, mtx1);
IGradient innerGradient = null;
switch (m_GradTypeRBox.cur_item())
{
case 0:
innerGradient = new GradientRadial();
break;
case 1:
innerGradient = new GradientDiamond();
break;
case 2:
innerGradient = new GradientX();
break;
case 3:
innerGradient = new GradientXY();
break;
case 4:
innerGradient = new GradientSqrtXY();
break;
case 5:
innerGradient = new GradientConic();
break;
}
IGradient outerGradient = null;
switch (m_GradWrapRBox.cur_item())
{
case 0:
outerGradient = new GradientReflectAdaptor(innerGradient);
break;
case 1:
outerGradient = new GradientRepeatAdaptor(innerGradient);
break;
case 2:
outerGradient = new GradientClampAdaptor(innerGradient);
break;
}
SpanAllocator span_alloc = new SpanAllocator();
ColorFunctionProfile colors = new ColorFunctionProfile(color_profile, m_profile.gamma());
SpanInterpolatorLinear <T> inter = new SpanInterpolatorLinear <T>(mtx_g1);
SpanGradient <T> span_gen = new SpanGradient <T>(inter, outerGradient, colors, 0, 150);
ras.AddPath(t1);
Renderer <T> .GenerateAndRender(ras, sl, clippingProxy, span_alloc, span_gen);
base.OnDraw();
}
