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7e20eaf0ae
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c375edf0ed
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package sig; |
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import java.awt.Graphics; |
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import java.awt.GraphicsConfiguration; |
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import java.awt.GraphicsEnvironment; |
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import java.awt.Image; |
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import java.awt.Toolkit; |
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import java.awt.image.ColorModel; |
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import java.awt.image.MemoryImageSource; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.swing.JPanel; |
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public class Panel extends JPanel implements Runnable { |
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public int pixel[]; |
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public int width=1280; |
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public int height=720; |
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final int CIRCLE_PRECISION=32; |
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private Thread thread; |
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private Image imageBuffer; |
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private MemoryImageSource mImageProducer; |
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private ColorModel cm; |
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int scanLine=0; |
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int nextScanLine=0; |
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double x_offset=0; |
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double y_offset=0; |
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int frameCount=0; |
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public Panel() { |
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super(true); |
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thread = new Thread(this, "MyPanel Thread"); |
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} |
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/** |
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* Get Best Color model available for current screen. |
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* @return color model |
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*/ |
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protected static ColorModel getCompatibleColorModel(){ |
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GraphicsConfiguration gfx_config = GraphicsEnvironment. |
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getLocalGraphicsEnvironment().getDefaultScreenDevice(). |
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getDefaultConfiguration(); |
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return gfx_config.getColorModel(); |
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} |
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/** |
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* Call it after been visible and after resizes. |
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*/ |
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public void init(){ |
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cm = getCompatibleColorModel(); |
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int screenSize = width * height; |
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if(pixel == null || pixel.length < screenSize){ |
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pixel = new int[screenSize]; |
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} |
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if(thread.isInterrupted() || !thread.isAlive()){ |
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thread.start(); |
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} |
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mImageProducer = new MemoryImageSource(width, height, cm, pixel,0, width); |
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mImageProducer.setAnimated(true); |
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mImageProducer.setFullBufferUpdates(true); |
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imageBuffer = Toolkit.getDefaultToolkit().createImage(mImageProducer); |
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} |
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@Override |
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public void paintComponent(Graphics g) { |
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super.paintComponent(g); |
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// perform draws on pixels
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render(); |
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// ask ImageProducer to update image
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mImageProducer.newPixels(); |
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// draw it on panel
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g.drawImage(this.imageBuffer, 0, 0, this); |
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} |
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/** |
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* Overrides ImageObserver.imageUpdate. |
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* Always return true, assuming that imageBuffer is ready to go when called |
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*/ |
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@Override |
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public boolean imageUpdate(Image image, int a, int b, int c, int d, int e) { |
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return true; |
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} |
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/** |
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* Do your draws in here !! |
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* pixel is your canvas! |
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*/ |
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public /* abstract */ void render(){ |
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int[] p = pixel; // this avoid crash when resizing
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//a=h/w
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for (int x=0;x<width;x++) { |
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for (int y=0;y<height;y++) { |
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p[y*width+x]=(0<<16)+(0<<8)+0; |
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} |
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} |
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x_offset+=1; |
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y_offset=50; |
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FillPolygon(p,Color.WHITE,50,50,new Point[] { |
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new Point(135,2), |
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new Point(166,96), |
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new Point(265,97), |
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new Point(185,156), |
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new Point(215,251), |
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new Point(134,192), |
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new Point(54,251), |
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new Point(84,156), |
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new Point(4,97), |
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new Point(103,96), |
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}); |
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FillPolygon(p,Color.BRIGHT_CYAN,x_offset,y_offset,new Point[] { |
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new Point(28,29), |
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new Point(78,103), |
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new Point(120,31), |
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new Point(123,221), |
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new Point(30,218), |
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}); |
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//FillRect(p,Color.BRIGHT_RED,200,200,600,64);
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final Color testAlpha = new Color(150,0,0,128); |
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FillCircle(p,testAlpha,150,150,100); |
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FillOval(p,Color.BRIGHT_GREEN,300,150,100,50); |
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} |
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public void FillRect(int[] p,Color col,double x,double y,double w,double h) { |
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for (int xx=0;xx<w;xx++) { |
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for (int yy=0;yy<h;yy++) { |
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int index = ((int)y+yy)*width+(int)x+xx; |
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p[index]=col.getColor(); |
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} |
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} |
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} |
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public void FillCircle(int[] p,Color col,double center_x,double center_y,double r) { |
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int counter=0; |
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Point[] points = new Point[CIRCLE_PRECISION]; |
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for (double theta=0;theta<Math.PI*2;theta+=((Math.PI*2)/CIRCLE_PRECISION)) { |
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//System.out.println("Loop "+counter+++". Theta:"+theta);
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//System.out.println("X:"+(Math.sin(theta)*r+center_x)+" Y:"+(Math.cos(theta)*r+center_y));
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points[counter++]=new Point((int)(Math.round(Math.sin(theta)*r+center_x)),(int)(Math.round(Math.cos(theta)*r+center_y))); |
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} |
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FillPolygon(p,col,0,0,points); |
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} |
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public void FillOval(int[] p,Color col,double center_x,double center_y,double w,double h) { |
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int counter=0; |
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Point[] points = new Point[CIRCLE_PRECISION]; |
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double r = Math.max(w,h); |
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double ratio = Math.min(w,h)/r; |
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for (double theta=0;theta<Math.PI*2;theta+=((Math.PI*2)/CIRCLE_PRECISION)) { |
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//System.out.println("Loop "+counter+++". Theta:"+theta);
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//System.out.println("X:"+(Math.sin(theta)*r+center_x)+" Y:"+(Math.cos(theta)*r+center_y));
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Point newP = new Point((int)(Math.round(Math.sin(theta)*r)),(int)(Math.round(Math.cos(theta)*r))); |
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if (w<h) { |
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newP.x=(int)Math.round(newP.x*ratio); |
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} else { |
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newP.y=(int)Math.round(newP.y*ratio); |
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} |
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newP.x+=center_x; |
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newP.y+=center_y; |
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points[counter++]=newP; |
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} |
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FillPolygon(p,col,0,0,points); |
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} |
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public void FillPolygon(int[] p,Color col,double x_offset,double y_offset,Point...points) { |
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Edge[] edges = new Edge[points.length]; |
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List<Edge> edges_sorted = new ArrayList<Edge>(); |
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for (int i=0;i<points.length;i++) { |
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edges[i] = new Edge(points[i],points[(i+1)%points.length]); |
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if (!Double.isInfinite(edges[i].inverse_slope)) { |
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if (edges_sorted.size()==0) { |
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edges_sorted.add(edges[i]); |
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} else { |
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boolean inserted=false; |
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for (int j=0;j<edges_sorted.size();j++) { |
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Edge e2 = edges_sorted.get(j); |
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if (e2.min_y>=edges[i].min_y) { |
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edges_sorted.add(j,edges[i]); |
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inserted=true; |
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break; |
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} |
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} |
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if (!inserted) { |
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edges_sorted.add(edges[i]); |
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} |
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} |
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} |
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} |
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//System.out.println(edges_sorted);
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List<Edge> active_edges = new ArrayList<Edge>(); |
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scanLine = edges_sorted.get(0).min_y-1; |
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nextScanLine = scanLine+1; |
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do { |
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for (int i=0;i<active_edges.size();i+=2) { |
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Edge e1 = active_edges.get(i); |
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Edge e2 = active_edges.get(i+1); |
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//System.out.println("Drawing from "+((int)Math.round(e1.x_of_min_y))+" to "+e2.x_of_min_y+" on line "+scanLine);
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for (int x=(int)Math.round(e1.x_of_min_y);x<=e2.x_of_min_y;x++) { |
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int index = (scanLine+(int)y_offset)*width+x+(int)x_offset; |
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if (index<p.length&&index>=0) { |
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Draw(p,index,col.getColor()); |
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} |
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} |
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} |
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List<Edge> new_active_edges = new ArrayList<Edge>(); |
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for (int i=0;i<active_edges.size();i++) { |
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Edge e = active_edges.get(i); |
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if (e.max_y==scanLine+1) { |
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active_edges.remove(i--); |
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} else { |
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e.x_of_min_y+=e.inverse_slope; |
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} |
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} |
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scanLine++; |
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for (int i=0;i<active_edges.size();i++) { |
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Edge e = active_edges.get(i); |
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boolean inserted=false; |
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for (int j=0;j<new_active_edges.size();j++) { |
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Edge e2 = new_active_edges.get(j); |
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if (e2.x_of_min_y>e.x_of_min_y) { |
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new_active_edges.add(j,e); |
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inserted=true; |
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break; |
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} |
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} |
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if (!inserted) { |
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new_active_edges.add(e); |
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} |
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} |
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active_edges=new_active_edges; |
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GetNextScanLineEdges(edges_sorted, active_edges); |
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} |
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while (active_edges.size()>0); |
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} |
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private void GetNextScanLineEdges(List<Edge> edges_sorted, List<Edge> active_edges) { |
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if (scanLine==nextScanLine) { |
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for (int i=0;i<edges_sorted.size();i++) { |
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Edge e = edges_sorted.get(i); |
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if (e.min_y==scanLine) { |
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e = edges_sorted.remove(i--); |
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boolean inserted=false; |
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for (int j=0;j<active_edges.size();j++) { |
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if (e.x_of_min_y<active_edges.get(j).x_of_min_y) { |
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active_edges.add(j,e); |
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inserted=true; |
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break; |
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} |
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} |
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if (!inserted) { |
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active_edges.add(e); |
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} |
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} else |
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if (e.min_y>scanLine) { |
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nextScanLine=e.min_y; |
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break; |
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} |
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} |
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} |
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} |
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public void Draw(int[] canvas,int index, int col) { |
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int alpha = col>>>24; |
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if (alpha==0) { |
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return;} |
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else |
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if (alpha==255) { |
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canvas[index]=col; |
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} else { |
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float ratio=alpha/255f; |
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int prev_col=canvas[index]; |
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int prev_r=(prev_col&0xFF); |
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int prev_g=(prev_col&0xFF00)>>>8; |
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int prev_b=(prev_col&0xFF0000)>>>16; |
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int r=(col&0xFF); |
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int g=(col&0xFF00)>>>8; |
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int b=(col&0xFF0000)>>>16; |
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int new_r=(int)(ratio*r+(1-ratio)*prev_r); |
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int new_g=(int)(ratio*g+(1-ratio)*prev_g); |
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int new_b=(int)(ratio*b+(1-ratio)*prev_b); |
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canvas[index]=new_r+(new_g<<8)+(new_b<<16)+(col&0xFF000000); |
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} |
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} |
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@Override |
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public void run() { |
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while (true) { |
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// request a JPanel re-drawing
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repaint(); |
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//System.out.println("Repaint "+frameCount++);
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//try {Thread.sleep(1);} catch (InterruptedException e) {}
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} |
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} |
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} |
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