diff options
author | Tom Sepez <tsepez@chromium.org> | 2015-06-16 16:29:44 -0700 |
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committer | Tom Sepez <tsepez@chromium.org> | 2015-06-16 16:29:44 -0700 |
commit | 2ca8fcbc8a7a3ef6adfac154c47068c1696205d0 (patch) | |
tree | de3f825c75b1b92908825f68af8a4e7146cf97fd /core/src/fxge/agg/agg23/agg_math_stroke.h | |
parent | ea44bd064a86679a47a7265020f997d6e3b88336 (diff) | |
download | pdfium-2ca8fcbc8a7a3ef6adfac154c47068c1696205d0.tar.xz |
Separate agg-authored code from fx-authored code.chromium/2439chromium/2438chromium/2437chromium/2436chromium/2435
Creates a separate library so we can apply less-strict warnings to
the code we can't change from upstream vs. the code we can change,
reducing noise in the standalone build.
Remove needless foo.{cpp,h} files that merely perform indirection
via #include "some_other_path/foo.{cpp,h}".
BUG=pdfium:166
R=brucedawson@chromium.org, thestig@chromium.org
Review URL: https://codereview.chromium.org/1152743007.
Diffstat (limited to 'core/src/fxge/agg/agg23/agg_math_stroke.h')
-rw-r--r-- | core/src/fxge/agg/agg23/agg_math_stroke.h | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/core/src/fxge/agg/agg23/agg_math_stroke.h b/core/src/fxge/agg/agg23/agg_math_stroke.h deleted file mode 100644 index 620d675312..0000000000 --- a/core/src/fxge/agg/agg23/agg_math_stroke.h +++ /dev/null @@ -1,272 +0,0 @@ - -//---------------------------------------------------------------------------- -// Anti-Grain Geometry - Version 2.3 -// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) -// -// Permission to copy, use, modify, sell and distribute this software -// is granted provided this copyright notice appears in all copies. -// This software is provided "as is" without express or implied -// warranty, and with no claim as to its suitability for any purpose. -// -//---------------------------------------------------------------------------- -// Contact: mcseem@antigrain.com -// mcseemagg@yahoo.com -// http://www.antigrain.com -//---------------------------------------------------------------------------- -// -// Stroke math -// -//---------------------------------------------------------------------------- -#ifndef AGG_STROKE_MATH_INCLUDED -#define AGG_STROKE_MATH_INCLUDED -#include "agg_math.h" -#include "agg_vertex_sequence.h" -namespace agg -{ -enum line_cap_e { - butt_cap, - square_cap, - round_cap -}; -enum line_join_e { - miter_join = 0, - miter_join_revert = 1, - miter_join_round = 4, - round_join = 2, - bevel_join = 3 -}; -enum inner_join_e { - inner_bevel, - inner_miter, - inner_jag, - inner_round -}; -const FX_FLOAT stroke_theta = 1.0f / 1000.0f; -template<class VertexConsumer> -void stroke_calc_arc(VertexConsumer& out_vertices, - FX_FLOAT x, FX_FLOAT y, - FX_FLOAT dx1, FX_FLOAT dy1, - FX_FLOAT dx2, FX_FLOAT dy2, - FX_FLOAT width, - FX_FLOAT approximation_scale) -{ - typedef typename VertexConsumer::value_type coord_type; - FX_FLOAT a1 = FXSYS_atan2(dy1, dx1); - FX_FLOAT a2 = FXSYS_atan2(dy2, dx2); - FX_FLOAT da = a1 - a2; - bool ccw = da > 0 && da < FX_PI; - if(width < 0) { - width = -width; - } - da = FXSYS_acos(FXSYS_Div(width, width + FXSYS_Div(1.0f / 8, approximation_scale))) * 2; - out_vertices.add(coord_type(x + dx1, y + dy1)); - if(!ccw) { - if(a1 > a2) { - a2 += 2 * FX_PI; - } - a2 -= da / 4; - a1 += da; - while(a1 < a2) { - out_vertices.add(coord_type(x + FXSYS_Mul(width, FXSYS_cos(a1)), - y + FXSYS_Mul(width, FXSYS_sin(a1)))); - a1 += da; - } - } else { - if(a1 < a2) { - a2 -= 2 * FX_PI; - } - a2 += da / 4; - a1 -= da; - while(a1 > a2) { - out_vertices.add(coord_type(x + FXSYS_Mul(width, FXSYS_cos(a1)), - y + FXSYS_Mul(width, FXSYS_sin(a1)))); - a1 -= da; - } - } - out_vertices.add(coord_type(x + dx2, y + dy2)); -} -template<class VertexConsumer> -void stroke_calc_miter(VertexConsumer& out_vertices, - const vertex_dist& v0, - const vertex_dist& v1, - const vertex_dist& v2, - FX_FLOAT dx1, FX_FLOAT dy1, - FX_FLOAT dx2, FX_FLOAT dy2, - FX_FLOAT width, - line_join_e line_join, - FX_FLOAT miter_limit, - FX_FLOAT approximation_scale) -{ - typedef typename VertexConsumer::value_type coord_type; - FX_FLOAT xi = v1.x; - FX_FLOAT yi = v1.y; - bool miter_limit_exceeded = true; - if(calc_intersection(v0.x + dx1, v0.y - dy1, - v1.x + dx1, v1.y - dy1, - v1.x + dx2, v1.y - dy2, - v2.x + dx2, v2.y - dy2, - &xi, &yi)) { - FX_FLOAT d1 = calc_distance(v1.x, v1.y, xi, yi); - FX_FLOAT lim = FXSYS_Mul(width, miter_limit); - if(d1 <= lim) { - out_vertices.add(coord_type(xi, yi)); - miter_limit_exceeded = false; - } - } else { - FX_FLOAT x2 = v1.x + dx1; - FX_FLOAT y2 = v1.y - dy1; - if((FXSYS_Mul(x2 - v0.x, dy1) - FXSYS_Mul(v0.y - y2, dx1) < 0) != - (FXSYS_Mul(x2 - v2.x, dy1) - FXSYS_Mul(v2.y - y2, dx1) < 0)) { - out_vertices.add(coord_type(v1.x + dx1, v1.y - dy1)); - miter_limit_exceeded = false; - } - } - if(miter_limit_exceeded) { - switch(line_join) { - case miter_join_revert: - out_vertices.add(coord_type(v1.x + dx1, v1.y - dy1)); - out_vertices.add(coord_type(v1.x + dx2, v1.y - dy2)); - break; - case miter_join_round: - stroke_calc_arc(out_vertices, - v1.x, v1.y, dx1, -dy1, dx2, -dy2, - width, approximation_scale); - break; - default: - out_vertices.add(coord_type(v1.x + dx1 + FXSYS_Mul(dy1, miter_limit), - v1.y - dy1 + FXSYS_Mul(dx1, miter_limit))); - out_vertices.add(coord_type(v1.x + dx2 - FXSYS_Mul(dy2, miter_limit), - v1.y - dy2 - FXSYS_Mul(dx2, miter_limit))); - break; - } - } -} -template<class VertexConsumer> -void stroke_calc_cap(VertexConsumer& out_vertices, - const vertex_dist& v0, - const vertex_dist& v1, - FX_FLOAT len, - line_cap_e line_cap, - FX_FLOAT width, - FX_FLOAT approximation_scale) -{ - typedef typename VertexConsumer::value_type coord_type; - out_vertices.remove_all(); - FX_FLOAT dx1 = FXSYS_Div(v1.y - v0.y, len); - FX_FLOAT dy1 = FXSYS_Div(v1.x - v0.x, len); - FX_FLOAT dx2 = 0; - FX_FLOAT dy2 = 0; - dx1 = FXSYS_Mul(dx1, width); - dy1 = FXSYS_Mul(dy1, width); - if(line_cap != round_cap) { - if(line_cap == square_cap) { - dx2 = dy1; - dy2 = dx1; - } - out_vertices.add(coord_type(v0.x - dx1 - dx2, v0.y + dy1 - dy2)); - out_vertices.add(coord_type(v0.x + dx1 - dx2, v0.y - dy1 - dy2)); - } else { - FX_FLOAT a1 = FXSYS_atan2(dy1, -dx1); - FX_FLOAT a2 = a1 + FX_PI; - FX_FLOAT da = FXSYS_acos(FXSYS_Div(width, width + - FXSYS_Div(1.0f / 8, approximation_scale))) * 2; - out_vertices.add(coord_type(v0.x - dx1, v0.y + dy1)); - a1 += da; - a2 -= da / 4; - while(a1 < a2) { - out_vertices.add(coord_type(v0.x + FXSYS_Mul(width, FXSYS_cos(a1)), - v0.y + FXSYS_Mul(width, FXSYS_sin(a1)))); - a1 += da; - } - out_vertices.add(coord_type(v0.x + dx1, v0.y - dy1)); - } -} -template<class VertexConsumer> -void stroke_calc_join(VertexConsumer& out_vertices, - const vertex_dist& v0, - const vertex_dist& v1, - const vertex_dist& v2, - FX_FLOAT len1, - FX_FLOAT len2, - FX_FLOAT width, - line_join_e line_join, - inner_join_e inner_join, - FX_FLOAT miter_limit, - FX_FLOAT inner_miter_limit, - FX_FLOAT approximation_scale) -{ - typedef typename VertexConsumer::value_type coord_type; - FX_FLOAT dx1, dy1, dx2, dy2; - dx1 = FXSYS_MulDiv(width, v1.y - v0.y, len1); - dy1 = FXSYS_MulDiv(width, v1.x - v0.x, len1); - dx2 = FXSYS_MulDiv(width, v2.y - v1.y, len2); - dy2 = FXSYS_MulDiv(width, v2.x - v1.x, len2); - out_vertices.remove_all(); - if(calc_point_location(v0.x, v0.y, v1.x, v1.y, v2.x, v2.y) > 0) { - switch(inner_join) { - default: - out_vertices.add(coord_type(v1.x + dx1, v1.y - dy1)); - out_vertices.add(coord_type(v1.x + dx2, v1.y - dy2)); - break; - case inner_miter: - stroke_calc_miter(out_vertices, - v0, v1, v2, dx1, dy1, dx2, dy2, - width, - miter_join_revert, - inner_miter_limit, - 1.0f); - break; - case inner_jag: - case inner_round: { - FX_FLOAT d = (dx1 - dx2) * (dx1 - dx2) + (dy1 - dy2) * (dy1 - dy2); - if(d < len1 * len1 && d < len2 * len2) { - stroke_calc_miter(out_vertices, - v0, v1, v2, dx1, dy1, dx2, dy2, - width, - miter_join_revert, - inner_miter_limit, - 1.0f); - } else { - if(inner_join == inner_jag) { - out_vertices.add(coord_type(v1.x + dx1, v1.y - dy1)); - out_vertices.add(coord_type(v1.x, v1.y )); - out_vertices.add(coord_type(v1.x + dx2, v1.y - dy2)); - } else { - out_vertices.add(coord_type(v1.x + dx1, v1.y - dy1)); - out_vertices.add(coord_type(v1.x, v1.y )); - stroke_calc_arc(out_vertices, - v1.x, v1.y, dx2, -dy2, dx1, -dy1, - width, approximation_scale); - out_vertices.add(coord_type(v1.x, v1.y )); - out_vertices.add(coord_type(v1.x + dx2, v1.y - dy2)); - } - } - } - break; - } - } else { - switch(line_join) { - case miter_join: - case miter_join_revert: - case miter_join_round: - stroke_calc_miter(out_vertices, - v0, v1, v2, dx1, dy1, dx2, dy2, - width, - line_join, - miter_limit, - approximation_scale); - break; - case round_join: - stroke_calc_arc(out_vertices, - v1.x, v1.y, dx1, -dy1, dx2, -dy2, - width, approximation_scale); - break; - default: - out_vertices.add(coord_type(v1.x + dx1, v1.y - dy1)); - out_vertices.add(coord_type(v1.x + dx2, v1.y - dy2)); - break; - } - } -} -} -#endif |