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好假设要用到项目中须要自己改动。
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 object
auto scene = Scene::create();
// 'layer' is an autorelease object
auto layer = HelloWorld::create();
// add layer as a child to scene
scene->addChild(layer);
// return the scene
return scene;
}
// on "init" you need to initialize your instance
bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !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;
#endif
Director::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轴左側间距系数
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;
}