DrawPrimitivesTest

#ifndef _DRAW_PRIMITIVES_TEST_H_
#define _DRAW_PRIMITIVES_TEST_H_

////----#include "cocos2d.h"
#include "../testBasic.h"

class DrawPrimitivesTest : public CCLayer
{
public:
    DrawPrimitivesTest();
    virtual void draw();//必须重写这个函数，画图要在这函数中画
};

class DrawPrimitivesTestScene : public TestScene
{
public:
    virtual void runThisTest();
};

#endif

void DrawPrimitivesTest::draw()
{
    CHECK_GL_ERROR_DEBUG();

    // draw a simple line
    // The default state is:
    // Line Width: 1
    // color: 255,255,255,255 (white, non-transparent)
    // Anti-Aliased
    //    glEnable(GL_LINE_SMOOTH);
    ccDrawLine( VisibleRect::leftBottom(), VisibleRect::rightTop() );//画线

    CHECK_GL_ERROR_DEBUG();

    // line: color, width, aliased
    // glLineWidth > 1 and GL_LINE_SMOOTH are not compatible
    // GL_SMOOTH_LINE_WIDTH_RANGE = (1,1) on iPhone
    //    glDisable(GL_LINE_SMOOTH);
    glLineWidth( 5.0f );//设置线宽
    ccDrawColor4B(,,,);//设置线的颜色
    ccDrawLine( VisibleRect::leftTop(), VisibleRect::rightBottom() );

    CHECK_GL_ERROR_DEBUG();

    // TIP:
    // If you are going to use always the same color or width, you don't
    // need to call it before every draw
    //
    // Remember: OpenGL is a state-machine.

    // draw big point in the center
    ccPointSize();//设置点的大小
    ccDrawColor4B(,,,);
    ccDrawPoint( VisibleRect::center() );//画点

    CHECK_GL_ERROR_DEBUG();

    // draw 4 small points
    CCPoint points[] = { ccp(,), ccp(,), ccp(,), ccp(,) };
    ccPointSize();
    ccDrawColor4B(,,,);
    ccDrawPoints( points, );//画4个点

    CHECK_GL_ERROR_DEBUG();

    // draw a green circle with 10 segments
    glLineWidth();
    ccDrawColor4B(, , , );
    ccDrawCircle( VisibleRect::center(), , , , false);//画圆

    CHECK_GL_ERROR_DEBUG();

    // draw a green circle with 50 segments with line to center
    glLineWidth();
    ccDrawColor4B(, , , );
    ccDrawCircle( VisibleRect::center(), , CC_DEGREES_TO_RADIANS(), , true);//第一个参数：圆点，第二个参数：半径，第三个参数：角度，第四个参数：，第五个参数：是否填充

    CHECK_GL_ERROR_DEBUG();

    // open yellow poly
    ccDrawColor4B(, , , );
    glLineWidth();
    CCPoint vertices[] = { ccp(,), ccp(,), ccp(,), ccp(,), ccp(,) };
    ccDrawPoly( vertices, , false);//画线段，false表示不封闭

    CHECK_GL_ERROR_DEBUG();

    // filled poly
    glLineWidth();
    CCPoint filledVertices[] = { ccp(,), ccp(,), ccp(,), ccp(,), ccp(,) };
    ccDrawSolidPoly(filledVertices, , ccc4f(0.5f, 0.5f, ,  ) );//对点集所围成的范围填充相应颜色

    // closed purble poly
    ccDrawColor4B(, , , );
    glLineWidth();
    CCPoint vertices2[] = { ccp(,), ccp(,), ccp(,) };
    ccDrawPoly( vertices2, , true);//画线段，并且收尾两点要封闭

    CHECK_GL_ERROR_DEBUG();

    // draw quad bezier path
    ccDrawQuadBezier(VisibleRect::leftTop(), VisibleRect::center(), VisibleRect::rightTop(), );//画贝塞尔曲线

    CHECK_GL_ERROR_DEBUG();

    // draw cubic bezier path
    ccDrawCubicBezier(VisibleRect::center(), ccp(VisibleRect::center().x+,VisibleRect::center().y+), ccp(VisibleRect::center().x+,VisibleRect::center().y-),VisibleRect::right(),);

    CHECK_GL_ERROR_DEBUG();

    //draw a solid polygon
    CCPoint vertices3[] = {ccp(,), ccp(,), ccp(,), ccp(,)};
    ccDrawSolidPoly( vertices3, , ccc4f(,,,) );//4条线段,并填充相应颜色

    // restore original values
    glLineWidth();
    ccDrawColor4B(,,,);
    ccPointSize();

    CHECK_GL_ERROR_DEBUG();
}