diff options
Diffstat (limited to '0004-Make-rasterizer_outline_aa-ignore-close_polygon-when.patch')
| -rw-r--r-- | 0004-Make-rasterizer_outline_aa-ignore-close_polygon-when.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/0004-Make-rasterizer_outline_aa-ignore-close_polygon-when.patch b/0004-Make-rasterizer_outline_aa-ignore-close_polygon-when.patch new file mode 100644 index 000000000000..0cecaf794860 --- /dev/null +++ b/0004-Make-rasterizer_outline_aa-ignore-close_polygon-when.patch @@ -0,0 +1,138 @@ +From b9c4b1c72b4ad6b24c37f402d3eec39ef393b0eb Mon Sep 17 00:00:00 2001 +From: Tom Hughes <tom@compton.nu> +Date: Sun, 19 May 2013 14:17:43 +0100 +Subject: [PATCH 04/15] Make rasterizer_outline_aa ignore close_polygon when + vertex count < 3 + +--- + include/agg_rasterizer_outline_aa.h | 107 ++++++++++++++++++------------------ + 1 file changed, 52 insertions(+), 55 deletions(-) + +diff --git a/include/agg_rasterizer_outline_aa.h b/include/agg_rasterizer_outline_aa.h +index 4d6dd57..24301d5 100644 +--- a/include/agg_rasterizer_outline_aa.h ++++ b/include/agg_rasterizer_outline_aa.h +@@ -333,68 +333,65 @@ namespace agg + int y2; + int lprev; + +- if(close_polygon) ++ if(close_polygon && (m_src_vertices.size() >= 3)) + { +- if(m_src_vertices.size() >= 3) ++ dv.idx = 2; ++ ++ v = &m_src_vertices[m_src_vertices.size() - 1]; ++ x1 = v->x; ++ y1 = v->y; ++ lprev = v->len; ++ ++ v = &m_src_vertices[0]; ++ x2 = v->x; ++ y2 = v->y; ++ dv.lcurr = v->len; ++ line_parameters prev(x1, y1, x2, y2, lprev); ++ ++ v = &m_src_vertices[1]; ++ dv.x1 = v->x; ++ dv.y1 = v->y; ++ dv.lnext = v->len; ++ dv.curr = line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr); ++ ++ v = &m_src_vertices[dv.idx]; ++ dv.x2 = v->x; ++ dv.y2 = v->y; ++ dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext); ++ ++ dv.xb1 = 0; ++ dv.yb1 = 0; ++ dv.xb2 = 0; ++ dv.yb2 = 0; ++ ++ switch(m_line_join) + { +- dv.idx = 2; +- +- v = &m_src_vertices[m_src_vertices.size() - 1]; +- x1 = v->x; +- y1 = v->y; +- lprev = v->len; +- +- v = &m_src_vertices[0]; +- x2 = v->x; +- y2 = v->y; +- dv.lcurr = v->len; +- line_parameters prev(x1, y1, x2, y2, lprev); +- +- v = &m_src_vertices[1]; +- dv.x1 = v->x; +- dv.y1 = v->y; +- dv.lnext = v->len; +- dv.curr = line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr); +- +- v = &m_src_vertices[dv.idx]; +- dv.x2 = v->x; +- dv.y2 = v->y; +- dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext); +- +- dv.xb1 = 0; +- dv.yb1 = 0; +- dv.xb2 = 0; +- dv.yb2 = 0; +- +- switch(m_line_join) +- { +- case outline_no_join: +- dv.flags = 3; +- break; ++ case outline_no_join: ++ dv.flags = 3; ++ break; + +- case outline_miter_join: +- case outline_round_join: +- dv.flags = +- (prev.diagonal_quadrant() == dv.curr.diagonal_quadrant()) | +- ((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant()) << 1); +- break; ++ case outline_miter_join: ++ case outline_round_join: ++ dv.flags = ++ (prev.diagonal_quadrant() == dv.curr.diagonal_quadrant()) | ++ ((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant()) << 1); ++ break; + +- case outline_miter_accurate_join: +- dv.flags = 0; +- break; +- } ++ case outline_miter_accurate_join: ++ dv.flags = 0; ++ break; ++ } + +- if((dv.flags & 1) == 0 && m_line_join != outline_round_join) +- { +- bisectrix(prev, dv.curr, &dv.xb1, &dv.yb1); +- } ++ if((dv.flags & 1) == 0 && m_line_join != outline_round_join) ++ { ++ bisectrix(prev, dv.curr, &dv.xb1, &dv.yb1); ++ } + +- if((dv.flags & 2) == 0 && m_line_join != outline_round_join) +- { +- bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2); +- } +- draw(dv, 0, m_src_vertices.size()); ++ if((dv.flags & 2) == 0 && m_line_join != outline_round_join) ++ { ++ bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2); + } ++ draw(dv, 0, m_src_vertices.size()); + } + else + { +-- +1.8.1.4 + |