From 4aa448a5a37889d80fbf6ef006c5db1dd7c55f39 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sun, 16 Apr 2023 20:12:59 +0200 Subject: svg-flatten: Fix pattern clipping for rotated/skewed transforms --- svg-flatten/src/svg_pattern.cpp | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'svg-flatten/src') diff --git a/svg-flatten/src/svg_pattern.cpp b/svg-flatten/src/svg_pattern.cpp index e8fb851..db740cf 100644 --- a/svg-flatten/src/svg_pattern.cpp +++ b/svg-flatten/src/svg_pattern.cpp @@ -60,8 +60,8 @@ void gerbolyze::Pattern::tile (gerbolyze::RenderContext &ctx) { * patternTransform. This is necessary so we iterate over the correct bounds when tiling below */ d2p pos_xf = ctx.mat().doc2phys(d2p{x, y}); double inst_x = pos_xf[0], inst_y = pos_xf[1]; - double inst_w = ctx.mat().doc2phys_dist(w); - double inst_h = ctx.mat().doc2phys_dist(h); + double inst_w = w; + double inst_h = h; ClipperLib::IntRect clip_bounds = get_paths_bounds(ctx.clip()); double bx = clip_bounds.left / clipper_scale; @@ -70,12 +70,14 @@ void gerbolyze::Pattern::tile (gerbolyze::RenderContext &ctx) { double bh = (clip_bounds.bottom - clip_bounds.top) / clipper_scale; d2p clip_p0 = patternTransform_inv.doc2phys(d2p{bx, by}); - d2p clip_p1 = patternTransform_inv.doc2phys(d2p{bx+bw, by+bh}); + d2p clip_p1 = patternTransform_inv.doc2phys(d2p{bx+bw, by}); + d2p clip_p2 = patternTransform_inv.doc2phys(d2p{bx+bw, by+bh}); + d2p clip_p3 = patternTransform_inv.doc2phys(d2p{bx, by+bh}); - bx = fmin(clip_p0[0], clip_p1[0]); - by = fmin(clip_p0[1], clip_p1[1]); - bw = fmax(clip_p0[0], clip_p1[0]) - bx; - bh = fmax(clip_p0[1], clip_p1[1]) - by; + bx = fmin(fmin(clip_p0[0], clip_p1[0]), fmin(clip_p2[0], clip_p3[0])); + by = fmin(fmin(clip_p0[1], clip_p1[1]), fmin(clip_p2[1], clip_p3[1])); + bw = fmax(fmax(clip_p0[0], clip_p1[0]), fmax(clip_p2[0], clip_p3[0])) - bx; + bh = fmax(fmax(clip_p0[1], clip_p1[1]), fmax(clip_p2[1], clip_p3[1])) - by; if (patternUnits == SVG_ObjectBoundingBox) { inst_x *= bw; @@ -102,11 +104,9 @@ void gerbolyze::Pattern::tile (gerbolyze::RenderContext &ctx) { for (double inst_off_x = fmod(inst_x, inst_w) - 2*inst_w; inst_off_x < bx + bw + 2*inst_w; inst_off_x += inst_w) { - for (double inst_off_y = fmod(inst_y, inst_h) - 2*inst_h; inst_off_y < by + bh + 2*inst_h; inst_off_y += inst_h) { - xform2d elem_xf; /* Change into this individual tile's coordinate system */ elem_xf.translate(inst_off_x, inst_off_y); -- cgit