public void init(span_gouraud.coord_type c1, span_gouraud.coord_type c2)
{
m_x1 = c1.x - 0.5;
m_y1 = c1.y - 0.5;
m_dx = c2.x - c1.x;
double dy = c2.y - c1.y;
m_1dy = (dy < 1e-5) ? 1e5 : 1.0 / dy;
m_r1 = (int)c1.color.red;
m_g1 = (int)c1.color.green;
m_b1 = (int)c1.color.blue;
m_a1 = (int)c1.color.alpha;
m_dr = (int)c2.color.red - m_r1;
m_dg = (int)c2.color.green - m_g1;
m_db = (int)c2.color.blue - m_b1;
m_da = (int)c2.color.alpha - m_a1;
}
public override void OnDraw(Graphics2D graphics2D)
{
ImageBuffer widgetsSubImage = ImageBuffer.NewSubImageReference(graphics2D.DestImage, graphics2D.GetClippingRect());
IImageByte backBuffer = widgetsSubImage;
#if SourceDepth24
pixfmt_alpha_blend_rgb pf = new pixfmt_alpha_blend_rgb(backBuffer, new blender_bgr());
#else
ImageBuffer pf = new ImageBuffer();
pf.Attach(backBuffer, new BlenderBGRA());
#endif
ImageClippingProxy ren_base = new ImageClippingProxy(pf);
ren_base.clear(new RGBA_Floats(1.0, 1.0, 1.0));
scanline_unpacked_8 sl = new scanline_unpacked_8();
ScanlineRasterizer ras = new ScanlineRasterizer();
#if true
render_gouraud(backBuffer, sl, ras);
#else
agg.span_allocator span_alloc = new span_allocator();
span_gouraud_rgba span_gen = new span_gouraud_rgba(new rgba8(255, 0, 0, 255), new rgba8(0, 255, 0, 255), new rgba8(0, 0, 255, 255), 320, 220, 100, 100, 200, 100, 0);
span_gouraud test_sg = new span_gouraud(new rgba8(0, 0, 0, 255), new rgba8(0, 0, 0, 255), new rgba8(0, 0, 0, 255), 320, 220, 100, 100, 200, 100, 0);
ras.add_path(test_sg);
renderer_scanlines.render_scanlines_aa(ras, sl, ren_base, span_alloc, span_gen);
//renderer_scanlines.render_scanlines_aa_solid(ras, sl, ren_base, new rgba8(0, 0, 0, 255));
#endif
ras.gamma(new gamma_none());
//m_dilation.Render(ras, sl, ren_base);
//m_gamma.Render(ras, sl, ren_base);
//m_alpha.Render(ras, sl, ren_base);
base.OnDraw(graphics2D);
}