97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
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/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __COGL_PATH_PRIVATE_H
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#define __COGL_PATH_PRIVATE_H
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#include "cogl-handle.h"
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#define COGL_PATH(tex) ((CoglPath *)(tex))
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typedef struct _floatVec2
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{
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float x;
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float y;
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} floatVec2;
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typedef struct _CoglPathNode
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{
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float x;
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float y;
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unsigned int path_size;
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} CoglPathNode;
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typedef struct _CoglBezQuad
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{
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floatVec2 p1;
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floatVec2 p2;
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floatVec2 p3;
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} CoglBezQuad;
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typedef struct _CoglBezCubic
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{
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floatVec2 p1;
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floatVec2 p2;
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floatVec2 p3;
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floatVec2 p4;
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} CoglBezCubic;
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typedef struct _CoglPath CoglPath;
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struct _CoglPath
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{
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CoglHandleObject _parent;
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/* If this path was created with cogl_path_copy then parent_path
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will point to the copied path. Otherwise it will be
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COGL_INVALID_HANDLE to indicate that we own path_nodes. */
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CoglHandle parent_path;
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/* Pointer to the path nodes array. This will point directly into
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the parent path if this path is a copy */
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GArray *path_nodes;
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/* Number of nodes to render from the data. This may be different
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from path_nodes->len if this is a copied path and the parent path
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was appended to. If that is the case then we need to be careful
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to check that the size of a sub path doesn't extend past
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path_size */
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unsigned int path_size;
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floatVec2 path_start;
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floatVec2 path_pen;
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unsigned int last_path;
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floatVec2 path_nodes_min;
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floatVec2 path_nodes_max;
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};
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/* This is an internal version of cogl_path_new that doesn't affect
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the current path and just creates a new handle */
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CoglHandle
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_cogl_path_new (void);
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void
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_cogl_add_path_to_stencil_buffer (CoglHandle path,
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gboolean merge,
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gboolean need_clear);
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#endif /* __COGL_PATH_PRIVATE_H */
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