cocos2d-x3.0 柱图

画柱图就是多画几个矩形之后放在一起，这个实现了基本功能还不够完善如果要用到项目中需要自己修改。

原文地址：http://blog.csdn.net/qqmcy/article/details/25984717

效果图：

使用类：

HelloWorldScene.cpp

#include "HelloWorldScene.h"
#include "DJColumn.h"#include "DJColumnChart.h"USING_NS_CC;Scene* HelloWorld::createScene()
{// 'scene' is an autorelease objectauto scene = Scene::create();// 'layer' is an autorelease objectauto layer = HelloWorld::create();// add layer as a child to scenescene->addChild(layer);// return the scenereturn scene;
}// on "init" you need to initialize your instance
bool HelloWorld::init()
{//// 1. super init firstif ( !Layer::init() ){return false;}Size visibleSize = Director::getInstance()->getVisibleSize();Point origin = Director::getInstance()->getVisibleOrigin();//    auto top = Label::createWithSystemFont("hi放大师傅看到是非得失", "huawenxinsong", 20);
//    top->setPosition(Point(visibleSize.width / 2, visibleSize.height / 2));
//    addChild(top);std::vector<float> temp;temp.push_back(106);temp.push_back(206);temp.push_back(305);temp.push_back(152);std::vector<float> temp1;temp1.push_back(73);temp1.push_back(126);temp1.push_back(55);temp1.push_back(203);std::vector<std::vector<float>> vec;vec.push_back(temp);vec.push_back(temp1);std::vector<Color4B> colorVec;colorVec.push_back(Color4B::RED);colorVec.push_back(Color4B::ORANGE);DJColumnChart* djColumnChart = DJColumnChart::create();djColumnChart->setColumnValueVec(vec);djColumnChart->setColumnColorVec(colorVec);djColumnChart->setSize(Size(700, 700));djColumnChart->setPosition(Point(200, 10));djColumnChart->addDJColumnChart();addChild(djColumnChart);return true;
}void HelloWorld::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");return;
#endifDirector::getInstance()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)exit(0);
#endif
}

DJColumn.h柱图节点类

//
//  DJColumn.h
//  ColumnChart
//
//  Created by 杜甲 on 14-5-15.
//
//#ifndef __ColumnChart__DJColumn__
#define __ColumnChart__DJColumn__#include "cocos2d.h"
#include "ui/CocosGUI.h"
USING_NS_CC;class DJColumn :public ui::Layout{public:CREATE_FUNC(DJColumn);CC_SYNTHESIZE(Color4B, _djColumnColor, DJColumnColor);CC_SYNTHESIZE(float, _djColumnValue, DJColumnValue);CC_SYNTHESIZE(Size, _djColumnSize, DJColumnSize);virtual bool init();void draw(cocos2d::Renderer *renderer, const kmMat4 &transform, bool transformUpdated);void onDraw(const kmMat4 &transform, bool transformUpdated);CustomCommand _customCommand;};#endif /* defined(__ColumnChart__DJColumn__) */

DJColumn.cpp

//
//  DJColumn.cpp
//  ColumnChart
//
//  Created by 杜甲 on 14-5-15.
//
//#include "DJColumn.h"
bool DJColumn::init()
{bool bRet = false;do {CC_BREAK_IF(!ui::Layout::init());bRet = true;} while (0);return bRet;
}void DJColumn::draw(cocos2d::Renderer *renderer, const kmMat4 &transform, bool transformUpdated)
{_customCommand.init(_globalZOrder);_customCommand.func = CC_CALLBACK_0(DJColumn::onDraw, this,transform,transformUpdated);renderer->addCommand(&_customCommand);}void DJColumn::onDraw(const kmMat4 &transform, bool transformUpdated)
{kmGLPushMatrix();kmGLLoadMatrix(&transform);CHECK_GL_ERROR_DEBUG();DrawPrimitives::drawSolidRect(Point(0, 0), Point(getSize().width, getSize().height),Color4F(_djColumnColor.r, _djColumnColor.g, _djColumnColor.b, _djColumnColor.a));kmGLPopMatrix();
}

DJColumnChart.h柱图类

//
//  DJColumnChart.h
//  ColumnChart
//
//  Created by 杜甲 on 14-5-15.
//
//#ifndef __ColumnChart__DJColumnChart__
#define __ColumnChart__DJColumnChart__#include "cocos2d.h"
#include "ui/CocosGUI.h"
USING_NS_CC;class DJColumnChart:public ui::Layout{public:CREATE_FUNC(DJColumnChart);virtual bool init();CC_SYNTHESIZE(std::vector<std::vector<float>>, _columnValueVec, ColumnValueVec);CC_SYNTHESIZE(std::vector<Color4B>, _columnColorVec, ColumnColorVec);void addDJColumnChart();std:: string fontName;double getMaxValue(std::vector<float> vec);void draw(cocos2d::Renderer *renderer, const kmMat4 &transform, bool transformUpdated);void onDraw(const kmMat4 &transform, bool transformUpdated);CustomCommand _customCommand;private:float spaceRatio ;  //y轴间距系数float leftRatioX;   //x轴左侧间距系数int maxValue1;    //数据中的最大值float  layerHeight1 ;  //图离底部的距离};#endif /* defined(__ColumnChart__DJColumnChart__) */

DJColumnChart.cpp

//
//  DJColumnChart.cpp
//  ColumnChart
//
//  Created by 杜甲 on 14-5-15.
//
//#include "DJColumnChart.h"
#include "DJColumn.h"bool DJColumnChart::init()
{bool bRet = false;do {CC_BREAK_IF(!ui::Layout::init());fontName = "huawenxinsong";bRet = true;} while (0);return bRet;
}void DJColumnChart::draw(cocos2d::Renderer *renderer, const kmMat4 &transform, bool transformUpdated)
{_customCommand.init(_globalZOrder);_customCommand.func = CC_CALLBACK_0(DJColumnChart::onDraw, this,transform,transformUpdated);renderer->addCommand(&_customCommand);}
void DJColumnChart::onDraw(const kmMat4 &transform, bool transformUpdated)
{kmGLPushMatrix();kmGLLoadMatrix(&transform);spaceRatio = 0.06f;leftRatioX = 0.1f;std::vector<float> v0 = _columnValueVec.at(0);std::vector<float> v1 = _columnValueVec.at(1);double max1 = getMaxValue(v0);double max2 = getMaxValue(v1);double max  = max2;if (max1 > max2) {max = max1;}int maxValue2 = roundf(max / 100)* 100 ;int  maxNum = maxValue2 / 10;DrawPrimitives::setDrawColor4B(0, 255, 255, 255);float layoutHeight = getSize().height;float layoutWidth = getSize().width;float betweenDistance = layoutHeight / 13;log("AAAAA%f",betweenDistance);float tempbetweenDistance = betweenDistance;for (int i = 0; i < 11; i ++) {Point bPoint = Point(44, tempbetweenDistance);Point ePoint = Point(layoutWidth - 30, tempbetweenDistance);DrawPrimitives::drawLine(bPoint, ePoint);ui::Text* text = ui::Text::create(StringUtils::format("%d",maxNum* i), fontName, 20);text->setPosition(Point(18, tempbetweenDistance));text->setTextHorizontalAlignment(TextHAlignment::CENTER);text->setSize(Size(layoutWidth * 0.08, 20));addChild(text);
//        Label* labelY = Label::createWithSystemFont(StringUtils::format("%d",i), "huawenxinsong", 20);
//        labelY->setAlignment(TextHAlignment::RIGHT);
//        labelY->setPosition(Point(2, tempbetweenDistance));
//        addChild(labelY);tempbetweenDistance += betweenDistance;}kmGLPopMatrix();
}void DJColumnChart::addDJColumnChart()
{float betweenDistance = getSize().height / 12;log("betweenDistance = %f",betweenDistance);std::vector<float> temp = _columnValueVec.at(0);std::vector<float> temp1 = _columnValueVec.at(1);Color4B c1 = _columnColorVec.at(0);Color4B c2 = _columnColorVec.at(1);for (int i = 0; i <temp1.size(); i++) {DJColumn* djColumn = DJColumn::create();djColumn->setSize(Size(20, temp1.at(i) * 53.846153/30));djColumn->setDJColumnColor(c1);//djColumn->setAnchorPoint(Point::ANCHOR_MIDDLE_BOTTOM);djColumn->setPosition(Point(60 * i + getSize().width * 0.1 + 20, betweenDistance ));addChild(djColumn);}for (int i = 0; i <temp.size(); i++) {DJColumn* djColumn = DJColumn::create();djColumn->setSize(Size(20, temp.at(i)  * 53.846153/30));djColumn->setDJColumnColor(c2);//djColumn->setAnchorPoint(Point::ANCHOR_MIDDLE_BOTTOM);djColumn->setPosition(Point(60 * i + getSize().width * 0.1 , betweenDistance ));addChild(djColumn);ui::Text* nameText = ui::Text::create("名字", fontName, 20);nameText->setPosition(Point(60 * i + getSize().width * 0.1 + 25 , 40));addChild(nameText);}}double DJColumnChart::getMaxValue(std::vector<float> vec)
{double maxY = 8;for (int i = 0; i < vec.size(); i++) {float num = vec.at(i);if (maxY < abs(num)) {maxY = abs(num);}}return maxY;
}

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