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/**************************************************************************
*
* Copyright 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef _PATH_H
#define _PATH_H
#include "VG/openvg.h"
struct path;
struct polygon;
struct matrix;
enum fill_rule {
ODD_EVEN_FILL,
WINDING_FILL
};
struct path_for_each_data {
VGubyte segment;
/* all coords are absolute, even if segment is relative */
const VGfloat *coords;
VGfloat sx, sy, ox, oy, px, py;
void *user_data;
};
typedef VGboolean (*path_for_each_cb)(struct path *p,
struct path_for_each_data *data);
struct path *path_create(VGPathDatatype dt, VGfloat scale, VGfloat bias,
VGint segmentCapacityHint,
VGint coordCapacityHint,
VGbitfield capabilities);
void path_destroy(struct path *p);
VGbitfield path_capabilities(struct path *p);
void path_set_capabilities(struct path *p, VGbitfield bf);
void path_append_data(struct path *p,
VGint numSegments,
const VGubyte * pathSegments,
const void * pathData);
void path_append_path(struct path *dst,
struct path *src);
VGint path_num_segments(struct path *p);
void path_bounding_rect(struct path *p, float *x, float *y,
float *w, float *h);
float path_length(struct path *p, int start_segment, int num_segments);
void path_set_fill_rule(enum fill_rule fill);
enum fill_rule path_fill_rule(enum fill_rule fill);
VGboolean path_is_empty(struct path *p);
VGbyte path_datatype_size(struct path *p);
VGPathDatatype path_datatype(struct path *p);
VGfloat path_scale(struct path *p);
VGfloat path_bias(struct path *p);
VGint path_num_coords(struct path *p);
void path_modify_coords(struct path *p,
VGint startIndex,
VGint numSegments,
const void * pathData);
struct path *path_create_stroke(struct path *p,
struct matrix *m);
void path_for_each_segment(struct path *path,
path_for_each_cb cb,
void *user_data);
void path_transform(struct path *dst, struct path *src);
VGboolean path_interpolate(struct path *dst,
struct path *start, struct path *end,
VGfloat amount);
void path_clear(struct path *p, VGbitfield capabilities);
void path_render(struct path *p, VGbitfield paintModes, struct matrix *mat);
void path_fill(struct path *p, struct matrix *mat);
void path_stroke(struct path *p, struct matrix *mat);
void path_move_to(struct path *p, float x, float y);
void path_line_to(struct path *p, float x, float y);
void path_cubic_to(struct path *p, float px1, float py1,
float px2, float py2,
float x, float y);
void path_point(struct path *p, VGint startSegment, VGint numSegments,
VGfloat distance, VGfloat *point, VGfloat *normal);
void vg_float_to_datatype(VGPathDatatype datatype,
VGubyte *common_data,
const VGfloat *data,
VGint num_coords);
#endif
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