//------------------------------------------------------------------------ public Perspective trans_perspectivemultiply_inv(Affine m) { Affine t = m; t.invert(); return(multiply(t)); }
public void invert_test() { Affine a = Affine.NewIdentity(); a.translate(10, 10); Affine b = new Affine(a); b.invert(); double x = 100; double y = 100; double newx = x; double newy = y; a.transform(ref newx, ref newy); b.transform(ref newx, ref newy); Assert.AreEqual(x, newx, .001); Assert.AreEqual(y, newy, .001); }
public override void Render(IImageByte source, double destX, double destY, double angleRadians, double inScaleX, double inScaleY) { { // exit early if the dest and source bounds don't touch. // TODO: <BUG> make this do rotation and scalling RectangleInt sourceBounds = source.GetBounds(); RectangleInt destBounds = this.destImageByte.GetBounds(); sourceBounds.Offset((int)destX, (int)destY); if (!RectangleInt.DoIntersect(sourceBounds, destBounds)) { if (inScaleX != 1 || inScaleY != 1 || angleRadians != 0) { throw new NotImplementedException(); } return; } } double scaleX = inScaleX; double scaleY = inScaleY; Affine graphicsTransform = GetTransform(); if (!graphicsTransform.is_identity()) { if (scaleX != 1 || scaleY != 1 || angleRadians != 0) { throw new NotImplementedException(); } graphicsTransform.transform(ref destX, ref destY); } #if false // this is an optomization that eliminates the drawing of images that have their alpha set to all 0 (happens with generated images like explosions). MaxAlphaFrameProperty maxAlphaFrameProperty = MaxAlphaFrameProperty::GetMaxAlphaFrameProperty(source); if((maxAlphaFrameProperty.GetMaxAlpha() * color.A_Byte) / 256 <= ALPHA_CHANNEL_BITS_DIVISOR) { m_OutFinalBlitBounds.SetRect(0,0,0,0); } #endif bool IsScaled = (scaleX != 1 || scaleY != 1); bool IsRotated = true; if (Math.Abs(angleRadians) < (0.1 * MathHelper.Tau / 360)) { IsRotated = false; angleRadians = 0; } //bool IsMipped = false; double sourceOriginOffsetX = source.OriginOffset.x; double sourceOriginOffsetY = source.OriginOffset.y; bool CanUseMipMaps = IsScaled; if (scaleX > 0.5 || scaleY > 0.5) { CanUseMipMaps = false; } bool renderRequriesSourceSampling = IsScaled || IsRotated || destX != (int)destX || destY != (int)destY; // this is the fast drawing path if (renderRequriesSourceSampling) { #if false // if the scalling is small enough the results can be improved by using mip maps if(CanUseMipMaps) { CMipMapFrameProperty* pMipMapFrameProperty = CMipMapFrameProperty::GetMipMapFrameProperty(source); double OldScaleX = scaleX; double OldScaleY = scaleY; const CFrameInterface* pMippedFrame = pMipMapFrameProperty.GetMipMapFrame(ref scaleX, ref scaleY); if(pMippedFrame != source) { IsMipped = true; source = pMippedFrame; sourceOriginOffsetX *= (OldScaleX / scaleX); sourceOriginOffsetY *= (OldScaleY / scaleY); } HotspotOffsetX *= (inScaleX / scaleX); HotspotOffsetY *= (inScaleY / scaleY); } #endif Affine destRectTransform; DrawImageGetDestBounds(source, destX, destY, sourceOriginOffsetX, sourceOriginOffsetY, scaleX, scaleY, angleRadians, out destRectTransform); Affine sourceRectTransform = new Affine(destRectTransform); // We invert it because it is the transform to make the image go to the same position as the polygon. LBB [2/24/2004] sourceRectTransform.invert(); span_image_filter spanImageFilter; span_interpolator_linear interpolator = new span_interpolator_linear(sourceRectTransform); ImageBufferAccessorClip sourceAccessor = new ImageBufferAccessorClip(source, RGBA_Floats.rgba_pre(0, 0, 0, 0).GetAsRGBA_Bytes()); spanImageFilter = new span_image_filter_rgba_bilinear_clip(sourceAccessor, RGBA_Floats.rgba_pre(0, 0, 0, 0), interpolator); DrawImage(source, spanImageFilter, destRectTransform); #if false // this is some debug you can enable to visualize the dest bounding box LineFloat(BoundingRect.left, BoundingRect.top, BoundingRect.right, BoundingRect.top, WHITE); LineFloat(BoundingRect.right, BoundingRect.top, BoundingRect.right, BoundingRect.bottom, WHITE); LineFloat(BoundingRect.right, BoundingRect.bottom, BoundingRect.left, BoundingRect.bottom, WHITE); LineFloat(BoundingRect.left, BoundingRect.bottom, BoundingRect.left, BoundingRect.top, WHITE); #endif } else // TODO: this can be even faster if we do not use an intermediat buffer { Affine destRectTransform; DrawImageGetDestBounds(source, destX, destY, sourceOriginOffsetX, sourceOriginOffsetY, scaleX, scaleY, angleRadians, out destRectTransform); Affine sourceRectTransform = new Affine(destRectTransform); // We invert it because it is the transform to make the image go to the same position as the polygon. LBB [2/24/2004] sourceRectTransform.invert(); span_interpolator_linear interpolator = new span_interpolator_linear(sourceRectTransform); ImageBufferAccessorClip sourceAccessor = new ImageBufferAccessorClip(source, RGBA_Floats.rgba_pre(0, 0, 0, 0).GetAsRGBA_Bytes()); span_image_filter spanImageFilter = null; switch (source.BitDepth) { case 32: spanImageFilter = new span_image_filter_rgba_nn_stepXby1(sourceAccessor, interpolator); break; case 24: spanImageFilter = new span_image_filter_rgb_nn_stepXby1(sourceAccessor, interpolator); break; case 8: spanImageFilter = new span_image_filter_gray_nn_stepXby1(sourceAccessor, interpolator); break; default: throw new NotImplementedException(); } //spanImageFilter = new span_image_filter_rgba_nn(sourceAccessor, interpolator); DrawImage(source, spanImageFilter, destRectTransform); DestImage.MarkImageChanged(); } }
public override void OnDraw(Graphics2D graphics2D) { ImageBuffer widgetsSubImage = ImageBuffer.NewSubImageReference(graphics2D.DestImage, graphics2D.GetClippingRect()); ScanlineRasterizer ras = new ScanlineRasterizer(); scanline_unpacked_8 sl = new scanline_unpacked_8(); ImageClippingProxy clippingProxy = new ImageClippingProxy(widgetsSubImage); clippingProxy.clear(new RGBA_Floats(0, 0, 0)); m_profile.text_size(8.0); // draw a background to show how the alpha is working int RectWidth = 32; int xoffset = 238; int yoffset = 171; ScanlineRenderer scanlineRenderer = new ScanlineRenderer(); for (int i = 0; i < 7; i++) { for (int j = 0; j < 7; j++) { if ((i + j) % 2 != 0) { VertexSource.RoundedRect rect = new VertexSource.RoundedRect(i * RectWidth + xoffset, j * RectWidth + yoffset, (i + 1) * RectWidth + xoffset, (j + 1) * RectWidth + yoffset, 2); rect.normalize_radius(); ras.add_path(rect); scanlineRenderer.render_scanlines_aa_solid(clippingProxy, ras, sl, new RGBA_Bytes(.9, .9, .9)); } } } double ini_scale = 1.0; Transform.Affine mtx1 = Affine.NewIdentity(); mtx1 *= Affine.NewScaling(ini_scale, ini_scale); mtx1 *= Affine.NewTranslation(center_x, center_y); VertexSource.Ellipse e1 = new MatterHackers.Agg.VertexSource.Ellipse(); e1.init(0.0, 0.0, 110.0, 110.0, 64); Transform.Affine mtx_g1 = Affine.NewIdentity(); mtx_g1 *= Affine.NewScaling(ini_scale, ini_scale); mtx_g1 *= Affine.NewScaling(m_SaveData.m_scale, m_SaveData.m_scale); mtx_g1 *= Affine.NewScaling(m_scale_x, m_scale_y); mtx_g1 *= Affine.NewRotation(m_SaveData.m_angle); mtx_g1 *= Affine.NewTranslation(m_SaveData.m_center_x, m_SaveData.m_center_y); mtx_g1.invert(); 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], m_spline_g.spline()[i], m_spline_b.spline()[i], m_spline_a.spline()[i]); } VertexSourceApplyTransform t1 = new VertexSourceApplyTransform(e1, mtx1); IGradient innerGradient = null; switch (m_GradTypeRBox.SelectedIndex) { case 0: innerGradient = new gradient_radial(); break; case 1: innerGradient = new gradient_diamond(); break; case 2: innerGradient = new gradient_x(); break; case 3: innerGradient = new gradient_xy(); break; case 4: innerGradient = new gradient_sqrt_xy(); break; case 5: innerGradient = new gradient_conic(); break; } IGradient outerGradient = null; switch (m_GradWrapRBox.SelectedIndex) { case 0: outerGradient = new gradient_reflect_adaptor(innerGradient); break; case 1: outerGradient = new gradient_repeat_adaptor(innerGradient); break; case 2: outerGradient = new gradient_clamp_adaptor(innerGradient); break; } span_allocator span_alloc = new span_allocator(); color_function_profile colors = new color_function_profile(color_profile, m_profile.gamma()); span_interpolator_linear inter = new span_interpolator_linear(mtx_g1); span_gradient span_gen = new span_gradient(inter, outerGradient, colors, 0, 150); ras.add_path(t1); scanlineRenderer.GenerateAndRender(ras, sl, clippingProxy, span_alloc, span_gen); base.OnDraw(graphics2D); }