Cocos2D-Android-1 source code explanation: 8. DrawPrimitivesTest

Cocos2D-Android-1 source code explanation: 8. DrawPrimitivesTest
Package org. cocos2d. tests; 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. o Pengl. 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 {// test the painting primitive // private static final String LOG_TAG = DrawPrimitivesTest. class. getSimpleName (); private CCGLSurfaceView mGLSurfaceView; // create a view @ Overri De protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); requestWindowFeature (Window. FEATURE_NO_TITLE); // three settings // same as the previous 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 C CGLSurfaceView (this); // create the surface setContentView (mGLSurfaceView); // map the view // attach the OpenGL view to a window CCDirector. shareddire (). attachInView (mGLSurfaceView); // give the view to the director class // set landscape mode CCDirector. shareddire (). setLandscape (false); // do not landscape screen // show FPS CCDirector. shareddire (). setDisplayFPS (true); // display the number of frames per second in real time // frames per second CCDirector. shareddire (). setAnimationInterval (1. 0f/60); // specify the number of frames displayed. node (); scene. addChild (nextAction (); // create a node scene. runAction (CCRotateBy. action (4,-360); // rotate-360 degrees, in 4 seconds // Make the Scene active CCDirector. shareddire (). runWithScene (scene); // The director starts to show the elements above the layer to the view.} @ Override public void onStart () {// The following three old methods do not repeat super. onStart () ;}@ Override public void onPause () {super. onPause (); CCDirector. shareddire (). onPause ();} @ Override public void onResume () {super. onResume (); CCDirector. shareddire (). onResume () ;}@ Override public void onDestroy () {super. onDestroy (); CCDirector. shareddire (). end (); // CCTextureCache. sharedTextureCache (). removeAllTextures ();} static int sceneIdx =-1; static Class <?> Transitions [] = {// only one... an array is also used .. 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 () {// return a new try {Class <?> C = transitions [sceneIdx]; return (CCLayer) c. newInstance () ;}catch (Exception e) {return null ;}} public static class TestDemo extends CCLayer {// test public TestDemo () {CGSize s = CCDirector. shareddire (). winSize (); // obtain the size CCMenuItemImage item1 = CCMenuItemImage. item ("b1.png", "b2.png", this, "backCallback"); // The first menu item is actually a button, the first is not pressed, and the second is pressed, then there is the method in this, and the method name is the last parameter. java has a reflection mechanism, so he dared to write it like this .. but it is difficult to mix Second, the following two buttons are the same as 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); // put the buttons of these three menu items into a menu. setPosition (CGPoint. make (0, 0); // set the position for the menu. 0.0 is at the origin .. item1.setPosition (CGPoint. make (s. width/2-100, 30); // you only need to set the right button for the project, so the coordinates of the menu are only 0.0 it Em2.setPosition (CGPoint. make (s. width/2, 30); item3.setPosition (CGPoint. make (s. width/2 + 100, 30); addChild (menu,-1); // Finally, the menu is used as a subclass of the activity, and the display sequence is-1, possibly blocked}/** After setting the screen orientation to landscape, * the Activity will be restarted, so it seems we shocould not call setLandscape here * this is a bug, we shoshould make full use of android's capability, but not partly. */public void RestartCallback (Object sender) {// reload and switch the viewing mode. boolean landscape = CCDirector ctor. shareddire (). getLandscape (); // get the viewing mode CCDirector. shareddire (). setLandscape (! Landscape); // switch the viewing mode CCScene s = CCScene. node (); // generate layer node s. addChild (restartAction (); CCDirector. shareddire (). runWithScene (s); // start to draw this layer} public void nextCallback (Object sender) {// execute the next class and switch the viewing mode boolean landscape = CCDirector. shareddire (). getLandscape (); CCDirector. shareddire (). setLandscape (! Landscape); CCScene s = CCScene. node (); s. addChild (nextAction (); CCDirector. shareddire (). runWithScene (s);} public void backCallback (Object sender) {// execute the previous switchover mode boolean landscape = CCDirector. shareddire (). getLandscape (); CCDirector. shareddire (). setLandscape (! Landscape); CCScene s = CCScene. node (); s. addChild (backAction (); CCDirector. shareddire (). runWithScene (s);} String title () {return "No title" ;}} public static class Test1 extends TestDemo {// Test 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 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 r Otate/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) {// a painting class CGSize s = CCDirector. shareddire (). winSize (); // still get The screen size // draw a simple line // The default state is: // Line Width: 1 // color: 255,255,255,255 (white, non-transparent) // Anti-Aliased gl. glable (GL10.GL _ LINE_SMOOTH); // sets the line smoothing mode CCDraw IngPrimitives. ccDrawLine (gl, CGPoint. ccp (0, 0), CGPoint. ccp (s. width, s. height); // draw a line using a painting element // line: color, width, aliased // glLineWidth> 1 and GL_LINE_SMOOTH are not compatible // GL_SMOOTH_LINE_WIDTH_RANGE =) on iPhone gl. glDisable (GL10.GL _ LINE_SMOOTH); // cancel the smooth line mode gl. glLineWidth (5.0f); // set the line width to 5.0 gl. glColor4f (1.0f, 0.0f, 0.0f, 1.0f); // set the color CCDrawingPrimitives. ccDrawLine (gl, CGPoint. ccp (0, s. h Eight), CGPoint. ccp (s. width, 0); // then it is a primitive Painting Line // 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); // set the point size gl. glColor4f (0.0f, 0.0f, 1.0f, 0.5f); // primitive color CCDrawingPrimitives. ccDrawPoint (gl, CGPoint. make (s. width/2, s. height/2); // primitive painting, painting point // draw 4 small points CGPoint points [] = {CGPoint. ccp (60, 60), CGPoint. ccp (70, 70), CGPoint. ccp (60, 70), CGPoint. ccp (70, 60)}; // Dot Array gl. glPointSize (4); // set the point size gl. glColor4f (0.0f, 1.0f, 1.0f, 1.0f); // primitive color CCDrawingPrimitives. ccDrawPoints (gl, points, 4); // primitive painting point // draw a green circle with 10 segments gl. glLineWidth (16); // you can specify the gl line width. glColor4f (0.0f, 1.0f, 0.0f, 1.0f); // primitive color CCDrawingPrimitives. ccDrawCircle (gl, CGP Oint. make (s. width/2, s. height/2), 100, 0, 10, false); // primitive line drawing // draw a green circle with 50 segments with line to center gl. glLineWidth (2); // you can specify the gl line width. glColor4f (0.0f, 1.0f, 1.0f, 1.0f); // color CCDrawingPrimitives. ccDrawCircle (gl, CGPoint. make (s. width/2, s. height/2), 50, ccMacros. CC_DEGREES_TO_RADIANS (90), 50, true); // draws a circle as a primitive .., parameters: primitive, Center Coordinate, radius, radian value (Angle Parameter), number of segments, whether to draw a line to the center // open yellow poly gl. glColor4f (1. 0f, 1.0f, 0.0f, 1.0f); // set the color gl. glLineWidth (10); // you can specify CGPoint vertices [] = {CGPoint. ccp (0, 0), CGPoint. ccp (50, 50), CGPoint. ccp (100, 50), CGPoint. ccp (100,100), CGPoint. ccp (50,100)}; // set the Dot Array CCDrawingPrimitives. ccDrawPoly (gl, vertices, 5, false); // draw a polygon // closed purple poly gl. glColor4f (1.0f, 0.0f, 1.0f, 1.0f); // color gl. glLineWidth (2); // The width of the CGPoint vertices2 [] = {CGPoint. ccp (30,130), CGPoint. ccp (3 0,230), CGPoint. ccp (50,200)}; // point array CCDrawingPrimitives. ccDrawPoly (gl, vertices2, 3, true); // polygon // draw quad bezr path CCDrawingPrimitives. ccdrawquadbezr (gl, CGPoint. make (0, s. height), CGPoint. make (s. width/2, s. height/2), CGPoint. make (s. width, s. height), 50); // draw the bansel curve... A computer is used to draw curves. parameters: starting point, control point, end point, number of vertices // draw cubic bezr path CCDrawingPrimitives. ccdrawcubicbezr (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); // draw a three-dimensional besell curve. More advanced, parameters: starting point, control point 1, control point 2, end point, number of vertices .. // restore original values // restore data using a primitive gl. glLineWidth (1); // line width 1 gl. glColor4f (1.0f, 1.0f, 1.0f, 1.0f); // The color is black gl. glPointSize (1); // point size 1} public String title () {return "draw primitives ";}}}