Cocos2D-Android-1之源碼詳解：8.DrawPrimitivesTest

package org.cocos2d.tests;

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import javax.microedition.khronos.opengles.GL10;

import org.cocos2d.actions.interval.CCRotateBy;

import org.cocos2d.config.ccMacros;

import org.cocos2d.layers.CCLayer;

import org.cocos2d.layers.CCScene;

import org.cocos2d.menus.CCMenu;

import org.cocos2d.menus.CCMenuItemImage;

import org.cocos2d.nodes.CCDirector;

import org.cocos2d.opengl.CCDrawingPrimitives;

import org.cocos2d.opengl.CCGLSurfaceView;

import org.cocos2d.types.CGPoint;

import org.cocos2d.types.CGSize;

import android.app.Activity;

import android.os.Bundle;

import android.view.Window;

import android.view.WindowManager;

public class DrawPrimitivesTest extends Activity {//繪畫原語測試

// private static final String LOG_TAG = DrawPrimitivesTest.class.getSimpleName();

private CCGLSurfaceView mGLSurfaceView;//建立view

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);//3個(gè)設(shè)置//同之前

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,

WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

mGLSurfaceView = new CCGLSurfaceView(this);//創(chuàng)建surface

setContentView(mGLSurfaceView);//映射view

// attach the OpenGL view to a window

CCDirector.sharedDirector().attachInView(mGLSurfaceView);//把view給導(dǎo)演類

// set landscape mode

CCDirector.sharedDirector().setLandscape(false);//不橫屏

// show FPS

CCDirector.sharedDirector().setDisplayFPS(true);//實(shí)時(shí)顯示每秒多少幀

// frames per second

CCDirector.sharedDirector().setAnimationInterval(1.0f / 60);//標(biāo)定顯示多少幀

CCScene scene = CCScene.node();

scene.addChild(nextAction());//創(chuàng)建節(jié)點(diǎn)

scene.runAction(CCRotateBy.action(4, -360));//旋轉(zhuǎn)-360度，在4秒鐘

// Make the Scene active

CCDirector.sharedDirector().runWithScene(scene);//導(dǎo)演開始把圖層上面的元素給view來演

}

@Override

public void onStart() {//下面3個(gè)老方法不贅述

super.onStart();

}

@Override

public void onPause() {

super.onPause();

CCDirector.sharedDirector().onPause();

}

@Override

public void onResume() {

super.onResume();

CCDirector.sharedDirector().onResume();

}

@Override

public void onDestroy() {

super.onDestroy();

CCDirector.sharedDirector().end();

// CCTextureCache.sharedTextureCache().removeAllTextures();

}

static int sceneIdx = -1;

static Class<?> transitions[] = {//只有一個(gè)...還用個(gè)數(shù)組..

Test1.class,

};

public static CCLayer nextAction() {

sceneIdx++;

sceneIdx = sceneIdx % transitions.length;

return restartAction();

}

public static CCLayer backAction() {

sceneIdx--;

int total = transitions.length;

if (sceneIdx < 0)

sceneIdx += total;

return restartAction();

}

public static CCLayer restartAction() {//重新返回一個(gè)這個(gè)實(shí)例

try {

Class<?> c = transitions[sceneIdx];

return (CCLayer) c.newInstance();

} catch (Exception e) {

return null;

}

public static class TestDemo extends CCLayer {//測試

public TestDemo() {

CGSize s = CCDirector.sharedDirector().winSize();//得到大小

CCMenuItemImage item1 = CCMenuItemImage.item("b1.png", "b2.png", this, "backCallback");//第一個(gè)菜單項(xiàng)目，其實(shí)是個(gè)按鈕，第一個(gè)是沒按，第二個(gè)是按下，然后是this里的方法，然后方法名字是最后一個(gè)參數(shù)，java有反射機(jī)制，所以他才敢這樣寫..但是這樣不好混淆，后面2個(gè)按鈕同理

CCMenuItemImage item2 = CCMenuItemImage.item("r1.png", "r2.png", this, "restartCallback");

CCMenuItemImage item3 = CCMenuItemImage.item("f1.png", "f2.png", this, "nextCallback");

CCMenu menu = CCMenu.menu(item1, item2, item3);//把這3個(gè)菜單項(xiàng)的按鈕放進(jìn)一個(gè)菜單

menu.setPosition(CGPoint.make(0, 0));//給菜單設(shè)置位置，0.0就是在原點(diǎn)..

item1.setPosition(CGPoint.make(s.width / 2 - 100, 30));//只要按鈕項(xiàng)目設(shè)對就行了，所以菜單的坐標(biāo)就只是個(gè)0.0

item2.setPosition(CGPoint.make(s.width / 2, 30));

item3.setPosition(CGPoint.make(s.width / 2 + 100, 30));

addChild(menu, -1);//最后把菜單作為activity的子類，而且顯示順序是-1，有可能被遮擋的

}

* After setting the screen orientation to landscape,

* the Activity will be restarted, so it seems we should not call setLandscape here

* this is a bug, we should make full use of android's capability, but not partly.

public void restartCallback(Object sender) {//重新加載，并切換觀景模式，橫豎屏

boolean landscape = CCDirector.sharedDirector().getLandscape();//得到觀景模式

CCDirector.sharedDirector().setLandscape(!landscape);//切換觀景模式

CCScene s = CCScene.node();//生成圖層節(jié)點(diǎn)

s.addChild(restartAction());

CCDirector.sharedDirector().runWithScene(s);//開始畫這個(gè)圖層

}

public void nextCallback(Object sender) {//執(zhí)行下一個(gè)class并切換觀景模式

boolean landscape = CCDirector.sharedDirector().getLandscape();

CCDirector.sharedDirector().setLandscape(!landscape);

CCScene s = CCScene.node();

s.addChild(nextAction());

CCDirector.sharedDirector().runWithScene(s);

}

public void backCallback(Object sender) {//執(zhí)行上一個(gè)切換觀景模式

boolean landscape = CCDirector.sharedDirector().getLandscape();

CCDirector.sharedDirector().setLandscape(!landscape);

CCScene s = CCScene.node();

s.addChild(backAction());

CCDirector.sharedDirector().runWithScene(s);

}

String title() {

return "No title";

}

public static class Test1 extends TestDemo {//測試1

public static CCLayer node() {

return new Test1();

}

// TIP:

// Every CocosNode has a "draw" method.

// In the "draw" method you put all the code that actually draws your node.

// And Test1 is a subclass of TestDemo, which is a subclass of Layer, which is a subclass of CocosNode.

// As you can see the drawing primitives aren't CocosNode objects. They are just helper

// functions that let's you draw basic things like: points, line, polygons and circles.

// TIP:

// Don't draw your stuff outside the "draw" method. Otherwise it won't get transformed.

// TIP:

// If you want to rotate/translate/scale a circle or any other "primtive", you can do it by rotating

// the node. eg:

// this.rotation = 90;

public void draw(GL10 gl) {//一個(gè)繪畫類

CGSize s = CCDirector.sharedDirector().winSize();//還是得到屏幕大小

// draw a simple line

// The default state is:

// Line Width: 1

// color: 255,255,255,255 (white, non-transparent)

// Anti-Aliased

gl.glEnable(GL10.GL_LINE_SMOOTH);//設(shè)置線平滑模式

CCDrawingPrimitives.ccDrawLine(gl, CGPoint.ccp(0, 0), CGPoint.ccp(s.width, s.height));//運(yùn)用繪畫基元來畫線

// line: color, width, aliased

// glLineWidth > 1 and GL_LINE_SMOOTH are not compatible

// GL_SMOOTH_LINE_WIDTH_RANGE = (1,1) on iPhone

gl.glDisable(GL10.GL_LINE_SMOOTH);//撤銷平滑線模式

gl.glLineWidth(5.0f);//設(shè)置線寬5.0

gl.glColor4f(1.0f, 0.0f, 0.0f, 1.0f);//設(shè)置顏色

CCDrawingPrimitives.ccDrawLine(gl, CGPoint.ccp(0, s.height), CGPoint.ccp(s.width, 0));//然后又是基元繪畫線

// 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

gl.glPointSize(64);//設(shè)置點(diǎn)大小

gl.glColor4f(0.0f, 0.0f, 1.0f, 0.5f);//基元顏色

CCDrawingPrimitives.ccDrawPoint(gl, CGPoint.make(s.width / 2, s.height / 2));//基元繪畫，畫點(diǎn)

// draw 4 small points

CGPoint points[] = {CGPoint.ccp(60, 60), CGPoint.ccp(70, 70), CGPoint.ccp(60, 70), CGPoint.ccp(70, 60)};//點(diǎn)數(shù)組

gl.glPointSize(4);//設(shè)置點(diǎn)大小

gl.glColor4f(0.0f, 1.0f, 1.0f, 1.0f);//基元顏色

CCDrawingPrimitives.ccDrawPoints(gl, points, 4);//基元畫點(diǎn)

// draw a green circle with 10 segments

gl.glLineWidth(16);//設(shè)置線寬

gl.glColor4f(0.0f, 1.0f, 0.0f, 1.0f);//基元顏色

CCDrawingPrimitives.ccDrawCircle(gl, CGPoint.make(s.width / 2, s.height / 2), 100, 0, 10, false);//基元畫線

// draw a green circle with 50 segments with line to center

gl.glLineWidth(2);//設(shè)置線寬

gl.glColor4f(0.0f, 1.0f, 1.0f, 1.0f);//顏色

CCDrawingPrimitives.ccDrawCircle(gl, CGPoint.make(s.width / 2, s.height / 2), 50, ccMacros.CC_DEGREES_TO_RADIANS(90), 50, true);//基元畫圓..，參數(shù)：基元，中心點(diǎn)坐標(biāo)，半徑，弧度值（參數(shù)是角度），段數(shù)，是否畫線到圓心

// open yellow poly

gl.glColor4f(1.0f, 1.0f, 0.0f, 1.0f);//設(shè)置顏色

gl.glLineWidth(10);//設(shè)置線寬

CGPoint vertices[] = {CGPoint.ccp(0, 0), CGPoint.ccp(50, 50), CGPoint.ccp(100, 50), CGPoint.ccp(100, 100), CGPoint.ccp(50, 100)};//設(shè)置點(diǎn)數(shù)組

CCDrawingPrimitives.ccDrawPoly(gl, vertices, 5, false);//繪制多邊形

// closed purple poly

gl.glColor4f(1.0f, 0.0f, 1.0f, 1.0f);//顏色

gl.glLineWidth(2);//線寬

CGPoint vertices2[] = {CGPoint.ccp(30, 130), CGPoint.ccp(30, 230), CGPoint.ccp(50, 200)};//點(diǎn)數(shù)組

CCDrawingPrimitives.ccDrawPoly(gl, vertices2, 3, true);//多邊形

// draw quad bezier path

CCDrawingPrimitives.ccDrawQuadBezier(gl, CGPoint.make(0,s.height), CGPoint.make(s.width/2,s.height/2), CGPoint.make(s.width, s.height), 50);//繪制班塞爾曲線...一種計(jì)算機(jī)用來畫曲線的曲線，，參數(shù)：起點(diǎn)，控點(diǎn)，結(jié)束點(diǎn)，頂點(diǎn)數(shù)

// draw cubic bezier path

CCDrawingPrimitives.ccDrawCubicBezier(gl, CGPoint.make(s.width/2, s.height/2), CGPoint.make(s.width/2+30, s.height/2+50),

CGPoint.make(s.width/2+60, s.height/2-50), CGPoint.make(s.width, s.height/2),100);//繪制立體貝塞爾曲線。更高端了，參數(shù)：起點(diǎn)，控點(diǎn)1，控點(diǎn)2，結(jié)束點(diǎn)，頂點(diǎn)數(shù)..

// restore original values//基元恢復(fù)數(shù)據(jù)

gl.glLineWidth(1);//線寬1

gl.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);//顏色黑

gl.glPointSize(1);//點(diǎn)大小1

}

public String title() {

return "draw primitives";

}

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