axmol/cocos2dx/draw_nodes/CCDrawNode.h

90 lines
2.8 KiB
C++

/* Copyright (c) 2012 Scott Lembcke and Howling Moon Software
* Copyright (c) 2012 cocos2d-x.org
*
* 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/*
* Code copied & pasted from SpacePatrol game https://github.com/slembcke/SpacePatrol
*
* Renamed and added some changes for cocos2d
*
*/
#ifndef __CCDRAWNODES_CCDRAW_NODE_H__
#define __CCDRAWNODES_CCDRAW_NODE_H__
#include "base_nodes/CCNode.h"
#include "ccTypes.h"
NS_CC_BEGIN
/** DrawNode
Node that draws dots, segments and polygons.
Faster than the "drawing primitives" since they it draws everything in one single batch.
@since v2.1
*/
class CC_DLL DrawNode : public Node
{
protected:
GLuint _vao;
GLuint _vbo;
unsigned int _bufferCapacity;
GLsizei _bufferCount;
V2F_C4B_T2F *_buffer;
BlendFunc _blendFunc;
bool _dirty;
public:
static DrawNode* create();
virtual ~DrawNode();
virtual bool init();
virtual void draw();
/** draw a dot at a position, with a given radius and color */
void drawDot(const Point &pos, float radius, const Color4F &color);
/** draw a segment with a radius and color */
void drawSegment(const Point &from, const Point &to, float radius, const Color4F &color);
/** draw a polygon with a fill color and line color */
void drawPolygon(Point *verts, unsigned int count, const Color4F &fillColor, float borderWidth, const Color4F &borderColor);
/** Clear the geometry in the node's buffer. */
void clear();
const BlendFunc& getBlendFunc() const;
void setBlendFunc(const BlendFunc &blendFunc);
DrawNode();
private:
void ensureCapacity(unsigned int count);
void render();
};
NS_CC_END
#endif // __CCDRAWNODES_CCDRAW_NODE_H__