cocos2d-x-3.2 (一)两种方法画基本图形

发布时间：2020-12-14 19:05:27 所属栏目：百科来源：网络整理

导读：1： auto s = Director :: getInstance ()- getWinSize (); auto draw = DrawNode :: create (); this - addChild (draw); for ( int i = 0 ; i 10 ; i++) { draw- drawDot ( Vec2 (s. width * 0.5 ,s. height * 0.5 ), 10 *( 10 -i), Color4F ( CCRANDOM_0_1

1：

auto s = Director::getInstance()->getWinSize();

auto draw = DrawNode::create();

this->addChild(draw);

for (int i = 0; i < 10; i++) {

draw->drawDot(Vec2(s.width*0.5,s.height*0.5),10*(10-i),Color4F(CCRANDOM_0_1(),CCRANDOM_0_1(),1));

}

2：

void HelloWorld::draw(Renderer *renderer,const Mat4 &transform,uint32_t flags)

{

_customCommand.init(1);

_customCommand.func = CC_CALLBACK_0(HelloWorld::onDraw,this,transform,flags);

renderer->addCommand(&_customCommand);

}

void HelloWorld::onDraw(const Mat4 &transform,uint32_t flags)

{

Director::getInstance()->pushMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);

Director::getInstance()->loadMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW,transform);

//直线

CHECK_GL_ERROR_DEBUG();

glLineWidth(5.0f);

DrawPrimitives::setDrawColor4B(255,0,255);

DrawPrimitives::drawLine(VisibleRect::leftBottom(),VisibleRect::rightTop());

Director::getInstance()->popMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW);

}

（编辑：李大同）

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