[17276] | 1 | /* |
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| 2 | rsvg-path.c: Parse SVG path element data into bezier path. |
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| 3 | |
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| 4 | Copyright (C) 2000 Eazel, Inc. |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or |
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[18274] | 7 | modify it under the terms of the GNU Library General Public License as |
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[17276] | 8 | published by the Free Software Foundation; either version 2 of the |
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| 9 | License, or (at your option) any later version. |
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| 10 | |
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| 11 | This program is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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[18274] | 14 | Library General Public License for more details. |
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[17276] | 15 | |
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[18274] | 16 | You should have received a copy of the GNU Library General Public |
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[17276] | 17 | License along with this program; if not, write to the |
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| 18 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 19 | Boston, MA 02111-1307, USA. |
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| 20 | |
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| 21 | Author: Raph Levien <raph@artofcode.com> |
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| 22 | */ |
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| 23 | |
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| 24 | /* This is adapted from svg-path in Gill. */ |
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| 25 | |
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[18274] | 26 | #include "config.h" |
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[17276] | 27 | #include "rsvg-path.h" |
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| 28 | |
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[18274] | 29 | #include <glib/gtypes.h> |
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| 30 | #include <math.h> |
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| 31 | #include <stdlib.h> |
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| 32 | #include <string.h> |
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| 33 | |
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[17276] | 34 | /* This module parses an SVG path element into an RsvgBpathDef. |
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| 35 | |
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| 36 | At present, there is no support for <marker> or any other contextual |
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| 37 | information from the SVG file. The API will need to change rather |
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| 38 | significantly to support these. |
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| 39 | |
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| 40 | Reference: SVG working draft 3 March 2000, section 8. |
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| 41 | */ |
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| 42 | |
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| 43 | #ifndef M_PI |
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| 44 | #define M_PI 3.14159265358979323846 |
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| 45 | #endif /* M_PI */ |
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| 46 | |
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| 47 | typedef struct _RSVGParsePathCtx RSVGParsePathCtx; |
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| 48 | |
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| 49 | struct _RSVGParsePathCtx { |
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| 50 | RsvgBpathDef *bpath; |
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| 51 | double cpx, cpy; /* current point */ |
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| 52 | double rpx, rpy; /* reflection point (for 's' and 't' commands) */ |
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| 53 | char cmd; /* current command (lowercase) */ |
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| 54 | int param; /* parameter number */ |
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| 55 | gboolean rel; /* true if relative coords */ |
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| 56 | double params[7]; /* parameters that have been parsed */ |
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| 57 | }; |
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| 58 | |
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| 59 | static void |
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| 60 | rsvg_path_arc_segment (RSVGParsePathCtx *ctx, |
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| 61 | double xc, double yc, |
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| 62 | double th0, double th1, |
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| 63 | double rx, double ry, double x_axis_rotation) |
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| 64 | { |
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| 65 | double sin_th, cos_th; |
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| 66 | double a00, a01, a10, a11; |
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| 67 | double x1, y1, x2, y2, x3, y3; |
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| 68 | double t; |
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| 69 | double th_half; |
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| 70 | |
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| 71 | sin_th = sin (x_axis_rotation * (M_PI / 180.0)); |
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| 72 | cos_th = cos (x_axis_rotation * (M_PI / 180.0)); |
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| 73 | /* inverse transform compared with rsvg_path_arc */ |
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| 74 | a00 = cos_th * rx; |
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| 75 | a01 = -sin_th * ry; |
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| 76 | a10 = sin_th * rx; |
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| 77 | a11 = cos_th * ry; |
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| 78 | |
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| 79 | th_half = 0.5 * (th1 - th0); |
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| 80 | t = (8.0 / 3.0) * sin (th_half * 0.5) * sin (th_half * 0.5) / sin (th_half); |
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| 81 | x1 = xc + cos (th0) - t * sin (th0); |
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| 82 | y1 = yc + sin (th0) + t * cos (th0); |
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| 83 | x3 = xc + cos (th1); |
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| 84 | y3 = yc + sin (th1); |
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| 85 | x2 = x3 + t * sin (th1); |
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| 86 | y2 = y3 - t * cos (th1); |
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| 87 | rsvg_bpath_def_curveto (ctx->bpath, |
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| 88 | a00 * x1 + a01 * y1, a10 * x1 + a11 * y1, |
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| 89 | a00 * x2 + a01 * y2, a10 * x2 + a11 * y2, |
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| 90 | a00 * x3 + a01 * y3, a10 * x3 + a11 * y3); |
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| 91 | } |
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| 92 | |
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| 93 | /** |
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| 94 | * rsvg_path_arc: Add an RSVG arc to the path context. |
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| 95 | * @ctx: Path context. |
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| 96 | * @rx: Radius in x direction (before rotation). |
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| 97 | * @ry: Radius in y direction (before rotation). |
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| 98 | * @x_axis_rotation: Rotation angle for axes. |
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| 99 | * @large_arc_flag: 0 for arc length <= 180, 1 for arc >= 180. |
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| 100 | * @sweep: 0 for "negative angle", 1 for "positive angle". |
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| 101 | * @x: New x coordinate. |
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| 102 | * @y: New y coordinate. |
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| 103 | * |
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| 104 | **/ |
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| 105 | static void |
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| 106 | rsvg_path_arc (RSVGParsePathCtx *ctx, |
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| 107 | double rx, double ry, double x_axis_rotation, |
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| 108 | int large_arc_flag, int sweep_flag, |
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| 109 | double x, double y) |
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| 110 | { |
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| 111 | double sin_th, cos_th; |
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| 112 | double a00, a01, a10, a11; |
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| 113 | double x0, y0, x1, y1, xc, yc; |
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| 114 | double d, sfactor, sfactor_sq; |
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| 115 | double th0, th1, th_arc; |
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| 116 | int i, n_segs; |
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| 117 | |
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| 118 | sin_th = sin (x_axis_rotation * (M_PI / 180.0)); |
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| 119 | cos_th = cos (x_axis_rotation * (M_PI / 180.0)); |
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| 120 | a00 = cos_th / rx; |
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| 121 | a01 = sin_th / rx; |
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| 122 | a10 = -sin_th / ry; |
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| 123 | a11 = cos_th / ry; |
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| 124 | x0 = a00 * ctx->cpx + a01 * ctx->cpy; |
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| 125 | y0 = a10 * ctx->cpx + a11 * ctx->cpy; |
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| 126 | x1 = a00 * x + a01 * y; |
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| 127 | y1 = a10 * x + a11 * y; |
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| 128 | /* (x0, y0) is current point in transformed coordinate space. |
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| 129 | (x1, y1) is new point in transformed coordinate space. |
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| 130 | |
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| 131 | The arc fits a unit-radius circle in this space. |
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| 132 | */ |
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| 133 | d = (x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0); |
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| 134 | sfactor_sq = 1.0 / d - 0.25; |
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| 135 | if (sfactor_sq < 0) sfactor_sq = 0; |
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| 136 | sfactor = sqrt (sfactor_sq); |
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| 137 | if (sweep_flag == large_arc_flag) sfactor = -sfactor; |
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| 138 | xc = 0.5 * (x0 + x1) - sfactor * (y1 - y0); |
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| 139 | yc = 0.5 * (y0 + y1) + sfactor * (x1 - x0); |
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| 140 | /* (xc, yc) is center of the circle. */ |
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| 141 | |
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| 142 | th0 = atan2 (y0 - yc, x0 - xc); |
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| 143 | th1 = atan2 (y1 - yc, x1 - xc); |
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| 144 | |
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| 145 | th_arc = th1 - th0; |
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| 146 | if (th_arc < 0 && sweep_flag) |
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| 147 | th_arc += 2 * M_PI; |
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| 148 | else if (th_arc > 0 && !sweep_flag) |
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| 149 | th_arc -= 2 * M_PI; |
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| 150 | |
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| 151 | n_segs = ceil (fabs (th_arc / (M_PI * 0.5 + 0.001))); |
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| 152 | |
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| 153 | for (i = 0; i < n_segs; i++) |
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| 154 | rsvg_path_arc_segment (ctx, xc, yc, |
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| 155 | th0 + i * th_arc / n_segs, |
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| 156 | th0 + (i + 1) * th_arc / n_segs, |
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| 157 | rx, ry, x_axis_rotation); |
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| 158 | |
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| 159 | ctx->cpx = x; |
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| 160 | ctx->cpy = y; |
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| 161 | } |
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| 162 | |
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| 163 | |
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| 164 | /* supply defaults for missing parameters, assuming relative coordinates |
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| 165 | are to be interpreted as x,y */ |
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| 166 | static void |
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| 167 | rsvg_parse_path_default_xy (RSVGParsePathCtx *ctx, int n_params) |
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| 168 | { |
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| 169 | int i; |
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| 170 | |
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| 171 | if (ctx->rel) |
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| 172 | { |
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| 173 | for (i = ctx->param; i < n_params; i++) |
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| 174 | { |
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| 175 | if (i > 2) |
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| 176 | ctx->params[i] = ctx->params[i - 2]; |
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| 177 | else if (i == 1) |
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| 178 | ctx->params[i] = ctx->cpy; |
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| 179 | else if (i == 0) |
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| 180 | /* we shouldn't get here (usually ctx->param > 0 as |
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| 181 | precondition) */ |
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| 182 | ctx->params[i] = ctx->cpx; |
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| 183 | } |
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| 184 | } |
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| 185 | else |
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| 186 | { |
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| 187 | for (i = ctx->param; i < n_params; i++) |
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| 188 | ctx->params[i] = 0.0; |
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| 189 | } |
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| 190 | } |
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| 191 | |
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| 192 | static void |
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| 193 | rsvg_parse_path_do_cmd (RSVGParsePathCtx *ctx, gboolean final) |
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| 194 | { |
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| 195 | double x1, y1, x2, y2, x3, y3; |
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| 196 | |
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| 197 | switch (ctx->cmd) |
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| 198 | { |
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| 199 | case 'm': |
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| 200 | /* moveto */ |
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| 201 | if (ctx->param == 2 || final) |
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| 202 | { |
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| 203 | rsvg_parse_path_default_xy (ctx, 2); |
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| 204 | rsvg_bpath_def_moveto (ctx->bpath, |
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[18608] | 205 | ctx->params[0], ctx->params[1]); |
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[17276] | 206 | ctx->cpx = ctx->rpx = ctx->params[0]; |
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| 207 | ctx->cpy = ctx->rpy = ctx->params[1]; |
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| 208 | ctx->param = 0; |
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| 209 | } |
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| 210 | break; |
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| 211 | case 'l': |
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| 212 | /* lineto */ |
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| 213 | if (ctx->param == 2 || final) |
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| 214 | { |
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| 215 | rsvg_parse_path_default_xy (ctx, 2); |
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| 216 | rsvg_bpath_def_lineto (ctx->bpath, |
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[18608] | 217 | ctx->params[0], ctx->params[1]); |
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[17276] | 218 | ctx->cpx = ctx->rpx = ctx->params[0]; |
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| 219 | ctx->cpy = ctx->rpy = ctx->params[1]; |
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| 220 | ctx->param = 0; |
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| 221 | } |
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| 222 | break; |
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| 223 | case 'c': |
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| 224 | /* curveto */ |
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| 225 | if (ctx->param == 6 || final) |
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| 226 | { |
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| 227 | rsvg_parse_path_default_xy (ctx, 6); |
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| 228 | x1 = ctx->params[0]; |
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| 229 | y1 = ctx->params[1]; |
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| 230 | x2 = ctx->params[2]; |
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| 231 | y2 = ctx->params[3]; |
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| 232 | x3 = ctx->params[4]; |
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| 233 | y3 = ctx->params[5]; |
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| 234 | rsvg_bpath_def_curveto (ctx->bpath, |
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[18608] | 235 | x1, y1, x2, y2, x3, y3); |
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[17276] | 236 | ctx->rpx = x2; |
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| 237 | ctx->rpy = y2; |
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| 238 | ctx->cpx = x3; |
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| 239 | ctx->cpy = y3; |
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| 240 | ctx->param = 0; |
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| 241 | } |
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| 242 | break; |
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| 243 | case 's': |
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| 244 | /* smooth curveto */ |
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| 245 | if (ctx->param == 4 || final) |
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| 246 | { |
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| 247 | rsvg_parse_path_default_xy (ctx, 4); |
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| 248 | x1 = 2 * ctx->cpx - ctx->rpx; |
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| 249 | y1 = 2 * ctx->cpy - ctx->rpy; |
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| 250 | x2 = ctx->params[0]; |
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| 251 | y2 = ctx->params[1]; |
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| 252 | x3 = ctx->params[2]; |
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| 253 | y3 = ctx->params[3]; |
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| 254 | rsvg_bpath_def_curveto (ctx->bpath, |
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[18608] | 255 | x1, y1, x2, y2, x3, y3); |
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[17276] | 256 | ctx->rpx = x2; |
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| 257 | ctx->rpy = y2; |
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| 258 | ctx->cpx = x3; |
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| 259 | ctx->cpy = y3; |
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| 260 | ctx->param = 0; |
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| 261 | } |
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| 262 | break; |
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| 263 | case 'h': |
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| 264 | /* horizontal lineto */ |
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| 265 | if (ctx->param == 1) |
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| 266 | { |
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| 267 | rsvg_bpath_def_lineto (ctx->bpath, |
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[18608] | 268 | ctx->params[0], ctx->cpy); |
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[17276] | 269 | ctx->cpx = ctx->rpx = ctx->params[0]; |
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| 270 | ctx->param = 0; |
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| 271 | } |
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| 272 | break; |
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| 273 | case 'v': |
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| 274 | /* vertical lineto */ |
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| 275 | if (ctx->param == 1) |
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| 276 | { |
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| 277 | rsvg_bpath_def_lineto (ctx->bpath, |
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[18608] | 278 | ctx->cpx, ctx->params[0]); |
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[17276] | 279 | ctx->cpy = ctx->rpy = ctx->params[0]; |
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| 280 | ctx->param = 0; |
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| 281 | } |
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| 282 | break; |
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| 283 | case 'q': |
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| 284 | /* quadratic bezier curveto */ |
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| 285 | |
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| 286 | /* non-normative reference: |
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| 287 | http://www.icce.rug.nl/erikjan/bluefuzz/beziers/beziers/beziers.html |
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| 288 | */ |
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| 289 | if (ctx->param == 4 || final) |
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| 290 | { |
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| 291 | rsvg_parse_path_default_xy (ctx, 4); |
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| 292 | /* raise quadratic bezier to cubic */ |
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| 293 | x1 = (ctx->cpx + 2 * ctx->params[0]) * (1.0 / 3.0); |
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| 294 | y1 = (ctx->cpy + 2 * ctx->params[1]) * (1.0 / 3.0); |
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| 295 | x3 = ctx->params[2]; |
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| 296 | y3 = ctx->params[3]; |
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| 297 | x2 = (x3 + 2 * ctx->params[0]) * (1.0 / 3.0); |
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| 298 | y2 = (y3 + 2 * ctx->params[1]) * (1.0 / 3.0); |
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| 299 | rsvg_bpath_def_curveto (ctx->bpath, |
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[18608] | 300 | x1, y1, x2, y2, x3, y3); |
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[17276] | 301 | ctx->rpx = x2; |
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| 302 | ctx->rpy = y2; |
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| 303 | ctx->cpx = x3; |
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| 304 | ctx->cpy = y3; |
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| 305 | ctx->param = 0; |
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| 306 | } |
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| 307 | break; |
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| 308 | case 't': |
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| 309 | /* Truetype quadratic bezier curveto */ |
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| 310 | if (ctx->param == 2 || final) |
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| 311 | { |
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| 312 | double xc, yc; /* quadratic control point */ |
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| 313 | |
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| 314 | xc = 2 * ctx->cpx - ctx->rpx; |
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| 315 | yc = 2 * ctx->cpy - ctx->rpy; |
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| 316 | /* generate a quadratic bezier with control point = xc, yc */ |
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| 317 | x1 = (ctx->cpx + 2 * xc) * (1.0 / 3.0); |
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| 318 | y1 = (ctx->cpy + 2 * yc) * (1.0 / 3.0); |
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| 319 | x3 = ctx->params[0]; |
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| 320 | y3 = ctx->params[1]; |
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| 321 | x2 = (x3 + 2 * xc) * (1.0 / 3.0); |
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| 322 | y2 = (y3 + 2 * yc) * (1.0 / 3.0); |
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| 323 | rsvg_bpath_def_curveto (ctx->bpath, |
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[18608] | 324 | x1, y1, x2, y2, x3, y3); |
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[17276] | 325 | ctx->rpx = xc; |
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| 326 | ctx->rpy = yc; |
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| 327 | ctx->cpx = x3; |
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| 328 | ctx->cpy = y3; |
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| 329 | ctx->param = 0; |
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| 330 | } |
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| 331 | else if (final) |
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| 332 | { |
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| 333 | if (ctx->param > 2) |
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| 334 | { |
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| 335 | rsvg_parse_path_default_xy (ctx, 4); |
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| 336 | /* raise quadratic bezier to cubic */ |
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| 337 | x1 = (ctx->cpx + 2 * ctx->params[0]) * (1.0 / 3.0); |
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| 338 | y1 = (ctx->cpy + 2 * ctx->params[1]) * (1.0 / 3.0); |
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| 339 | x3 = ctx->params[2]; |
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| 340 | y3 = ctx->params[3]; |
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| 341 | x2 = (x3 + 2 * ctx->params[0]) * (1.0 / 3.0); |
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| 342 | y2 = (y3 + 2 * ctx->params[1]) * (1.0 / 3.0); |
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| 343 | rsvg_bpath_def_curveto (ctx->bpath, |
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[18608] | 344 | x1, y1, x2, y2, x3, y3); |
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[17276] | 345 | ctx->rpx = x2; |
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| 346 | ctx->rpy = y2; |
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| 347 | ctx->cpx = x3; |
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| 348 | ctx->cpy = y3; |
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| 349 | } |
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| 350 | else |
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| 351 | { |
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| 352 | rsvg_parse_path_default_xy (ctx, 2); |
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| 353 | rsvg_bpath_def_lineto (ctx->bpath, |
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[18608] | 354 | ctx->params[0], ctx->params[1]); |
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[17276] | 355 | ctx->cpx = ctx->rpx = ctx->params[0]; |
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| 356 | ctx->cpy = ctx->rpy = ctx->params[1]; |
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| 357 | } |
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| 358 | ctx->param = 0; |
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| 359 | } |
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| 360 | break; |
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| 361 | case 'a': |
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| 362 | if (ctx->param == 7 || final) |
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| 363 | { |
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| 364 | rsvg_path_arc (ctx, |
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| 365 | ctx->params[0], ctx->params[1], ctx->params[2], |
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| 366 | ctx->params[3], ctx->params[4], |
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| 367 | ctx->params[5], ctx->params[6]); |
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| 368 | ctx->param = 0; |
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| 369 | } |
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| 370 | break; |
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| 371 | default: |
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| 372 | ctx->param = 0; |
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| 373 | } |
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| 374 | } |
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| 375 | |
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| 376 | static void |
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| 377 | rsvg_parse_path_data (RSVGParsePathCtx *ctx, const char *data) |
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| 378 | { |
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| 379 | int i = 0; |
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| 380 | double val = 0; |
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| 381 | char c = 0; |
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| 382 | gboolean in_num = FALSE; |
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| 383 | gboolean in_frac = FALSE; |
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| 384 | gboolean in_exp = FALSE; |
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| 385 | gboolean exp_wait_sign = FALSE; |
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| 386 | int sign = 0; |
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| 387 | int exp = 0; |
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| 388 | int exp_sign = 0; |
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| 389 | double frac = 0.0; |
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| 390 | |
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| 391 | in_num = FALSE; |
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| 392 | for (i = 0; ; i++) |
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| 393 | { |
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| 394 | c = data[i]; |
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| 395 | if (c >= '0' && c <= '9') |
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| 396 | { |
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| 397 | /* digit */ |
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| 398 | if (in_num) |
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| 399 | { |
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| 400 | if (in_exp) |
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| 401 | { |
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| 402 | exp = (exp * 10) + c - '0'; |
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| 403 | exp_wait_sign = FALSE; |
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| 404 | } |
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| 405 | else if (in_frac) |
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| 406 | val += (frac *= 0.1) * (c - '0'); |
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| 407 | else |
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| 408 | val = (val * 10) + c - '0'; |
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| 409 | } |
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| 410 | else |
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| 411 | { |
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| 412 | in_num = TRUE; |
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| 413 | in_frac = FALSE; |
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| 414 | in_exp = FALSE; |
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| 415 | exp = 0; |
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| 416 | exp_sign = 1; |
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| 417 | exp_wait_sign = FALSE; |
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| 418 | val = c - '0'; |
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| 419 | sign = 1; |
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| 420 | } |
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| 421 | } |
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| 422 | else if (c == '.') |
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| 423 | { |
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| 424 | if (!in_num) |
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| 425 | { |
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| 426 | in_num = TRUE; |
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| 427 | val = 0; |
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| 428 | } |
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| 429 | in_frac = TRUE; |
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| 430 | frac = 1; |
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| 431 | } |
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| 432 | else if ((c == 'E' || c == 'e') && in_num) |
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| 433 | { |
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| 434 | in_exp = TRUE; |
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| 435 | exp_wait_sign = TRUE; |
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| 436 | exp = 0; |
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| 437 | exp_sign = 1; |
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| 438 | } |
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| 439 | else if ((c == '+' || c == '-') && in_exp) |
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| 440 | { |
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| 441 | exp_sign = c == '+' ? 1 : -1; |
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| 442 | } |
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| 443 | else if (in_num) |
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| 444 | { |
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| 445 | /* end of number */ |
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| 446 | |
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| 447 | val *= sign * pow (10, exp_sign * exp); |
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| 448 | if (ctx->rel) |
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| 449 | { |
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| 450 | /* Handle relative coordinates. This switch statement attempts |
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| 451 | to determine _what_ the coords are relative to. This is |
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| 452 | underspecified in the 12 Apr working draft. */ |
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| 453 | switch (ctx->cmd) |
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| 454 | { |
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| 455 | case 'l': |
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| 456 | case 'm': |
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| 457 | case 'c': |
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| 458 | case 's': |
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| 459 | case 'q': |
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| 460 | case 't': |
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| 461 | #ifndef RSVGV_RELATIVE |
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| 462 | /* rule: even-numbered params are x-relative, odd-numbered |
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| 463 | are y-relative */ |
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| 464 | if ((ctx->param & 1) == 0) |
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| 465 | val += ctx->cpx; |
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| 466 | else if ((ctx->param & 1) == 1) |
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| 467 | val += ctx->cpy; |
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| 468 | break; |
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| 469 | #else |
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| 470 | /* rule: even-numbered params are x-relative, odd-numbered |
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| 471 | are y-relative */ |
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[18608] | 472 | if (ctx->param == 0 || (ctx->param % 2 == 0)) |
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[17276] | 473 | val += ctx->cpx; |
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| 474 | else |
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| 475 | val += ctx->cpy; |
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| 476 | break; |
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| 477 | #endif |
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| 478 | case 'a': |
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| 479 | /* rule: sixth and seventh are x and y, rest are not |
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| 480 | relative */ |
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| 481 | if (ctx->param == 5) |
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| 482 | val += ctx->cpx; |
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| 483 | else if (ctx->param == 6) |
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| 484 | val += ctx->cpy; |
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| 485 | break; |
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| 486 | case 'h': |
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| 487 | /* rule: x-relative */ |
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| 488 | val += ctx->cpx; |
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| 489 | break; |
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| 490 | case 'v': |
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| 491 | /* rule: y-relative */ |
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| 492 | val += ctx->cpy; |
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| 493 | break; |
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| 494 | } |
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| 495 | } |
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| 496 | ctx->params[ctx->param++] = val; |
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| 497 | rsvg_parse_path_do_cmd (ctx, FALSE); |
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| 498 | in_num = FALSE; |
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| 499 | } |
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| 500 | |
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| 501 | if (c == '\0') |
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| 502 | break; |
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| 503 | else if ((c == '+' || c == '-') && !exp_wait_sign) |
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| 504 | { |
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| 505 | sign = c == '+' ? 1 : -1;; |
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| 506 | val = 0; |
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| 507 | in_num = TRUE; |
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| 508 | in_frac = FALSE; |
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| 509 | in_exp = FALSE; |
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| 510 | exp = 0; |
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| 511 | exp_sign = 1; |
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| 512 | exp_wait_sign = FALSE; |
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| 513 | } |
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| 514 | else if (c == 'z' || c == 'Z') |
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| 515 | { |
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| 516 | if (ctx->param) |
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| 517 | rsvg_parse_path_do_cmd (ctx, TRUE); |
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| 518 | rsvg_bpath_def_closepath (ctx->bpath); |
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| 519 | } |
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| 520 | else if (c >= 'A' && c <= 'Z' && c != 'E') |
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| 521 | { |
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| 522 | if (ctx->param) |
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| 523 | rsvg_parse_path_do_cmd (ctx, TRUE); |
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| 524 | ctx->cmd = c + 'a' - 'A'; |
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| 525 | ctx->rel = FALSE; |
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| 526 | } |
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| 527 | else if (c >= 'a' && c <= 'z' && c != 'e') |
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| 528 | { |
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| 529 | if (ctx->param) |
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| 530 | rsvg_parse_path_do_cmd (ctx, TRUE); |
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| 531 | ctx->cmd = c; |
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| 532 | ctx->rel = TRUE; |
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| 533 | } |
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| 534 | /* else c _should_ be whitespace or , */ |
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| 535 | } |
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| 536 | } |
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| 537 | |
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| 538 | RsvgBpathDef * |
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| 539 | rsvg_parse_path (const char *path_str) |
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| 540 | { |
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| 541 | RSVGParsePathCtx ctx; |
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| 542 | |
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| 543 | ctx.bpath = rsvg_bpath_def_new (); |
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| 544 | ctx.cpx = 0.0; |
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| 545 | ctx.cpy = 0.0; |
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| 546 | ctx.cmd = 0; |
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| 547 | ctx.param = 0; |
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| 548 | |
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| 549 | rsvg_parse_path_data (&ctx, path_str); |
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| 550 | |
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| 551 | if (ctx.param) |
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| 552 | rsvg_parse_path_do_cmd (&ctx, TRUE); |
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| 553 | |
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| 554 | return ctx.bpath; |
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| 555 | } |
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| 556 | |
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