parent
d6cd29f2fc
commit
e8b8114014
GPG Key ID:
5249548AA705F019
@ -1 +1 @@
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((nil . ((projectile-project-install-cmd . "mvn -B clean compile assembly:single && java -jar target/*.jar"))))
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((nil . ((projectile-project-compilation-cmd . "mvn -B clean compile assembly:single && java -jar target/*.jar"))))
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package edu.thi.phga.aparapi_test;
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import java.util.ArrayDeque;
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import java.util.Deque;
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import com.aparapi.Range;
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import javafx.application.Application;
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import javafx.geometry.Rectangle2D;
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import javafx.scene.Group;
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import javafx.scene.Scene;
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import javafx.scene.image.ImageView;
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import javafx.scene.image.PixelFormat;
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import javafx.scene.image.PixelReader;
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import javafx.scene.image.PixelWriter;
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import javafx.scene.image.WritableImage;
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import javafx.scene.image.WritablePixelFormat;
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import javafx.scene.input.KeyCode;
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import javafx.scene.input.KeyEvent;
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import javafx.scene.input.MouseEvent;
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import javafx.scene.paint.Color;
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import javafx.stage.Screen;
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import javafx.stage.Stage;
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public class Mandelbrot extends Application{
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private static Rectangle2D bounds = Screen.getPrimary().getBounds();
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private static final int BREITE = (int) (bounds.getWidth() * 0.8);
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private static final int HOEHE = BREITE * 9 / 16;
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private double[] farbe = new double[BREITE * HOEHE];
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private double[] saturation = new double[BREITE * HOEHE];
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private MandelbrotKernel k = new MandelbrotKernel(farbe, saturation);
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private Range r;
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// (x1, y1) = links oben, (x2, y2) = rechts unten
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private double x1 = -3.0;
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private double x2 = 1.8;
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private double y1 = (x2 - x1) * HOEHE / BREITE / 2;
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private double y2 = -y1;
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// Wie scharf ist das Bild (Ab wann sagen wir |Z_n| <= 2 für alle Z_n)
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private int maxIter = 200;
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private int exponent = 0;
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private WritableImage image = new WritableImage(BREITE, HOEHE);
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private WritablePixelFormat<java.nio.ByteBuffer> format = PixelFormat.getByteBgraPreInstance();
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private PixelWriter pw = image.getPixelWriter();
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private PixelReader pr = image.getPixelReader();
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private Deque<byte[]> imageStack = new ArrayDeque<>();
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private Deque<double[]> frameStack = new ArrayDeque<>();
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private Stage stage;
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private void zeichne() {
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stage.setTitle("KAO: Computing...");
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k.setParameters(x1, y1, x2, y2, maxIter);
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k.execute(r);
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for (int i = 0; i < farbe.length; i++) {
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Color c = Color.hsb(farbe[i], saturation[i], 0.5);
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pw.setColor(i % BREITE, i / BREITE, c);
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}
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setTitle();
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}
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private void setTitle() {
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stage.setTitle(String.format("KAO: Mandelbrot (Zoom: %d^%d, n = %d)",
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App.multiParam, exponent, maxIter));
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}
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private void zoomIn(MouseEvent e) {
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byte[] buffer = new byte[4 * BREITE * HOEHE];
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pr.getPixels(0, 0, BREITE, HOEHE, format, buffer, 0, 4 * BREITE);
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imageStack.push(buffer);
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frameStack.push(new double[] { x1, y1, x2, y2 });
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double x = x1 + (x2 - x1) * e.getX() / BREITE;
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double y = y1 + (y2 - y1) * e.getY() / HOEHE;
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double dx = (x2 - x1) / App.multiParam / 2;
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double dy = (y2 - y1) / App.multiParam / 2;
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x1 = x - dx;
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x2 = x + dx;
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y1 = y - dy;
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y2 = y + dy;
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maxIter *= 2;
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exponent++;
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zeichne();
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}
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private void zoomOut(KeyEvent e) {
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String key = e.getText();
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System.out.println("Key: " + key);
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if (key.equals("q") && !imageStack.isEmpty()) {
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double[] frame = frameStack.pop();
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x1 = frame[0];
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y1 = frame[1];
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x2 = frame[2];
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y2 = frame[3];
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maxIter /= 2;
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pw.setPixels(0, 0, BREITE, HOEHE, format, imageStack.pop(), 0, 4 * BREITE);
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setTitle();
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}
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}
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@Override
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public void start(Stage stage) {
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// Set range
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int maxWGSize = 16;
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System.out.println("Using WGSize: " + maxWGSize);
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r = Range.create2D(App.device, BREITE, HOEHE, maxWGSize, maxWGSize);
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this.stage = stage;
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ImageView view = new ImageView(image);
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view.setFocusTraversable(true);
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view.setOnMousePressed(this::zoomIn);
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view.setOnKeyPressed(this::zoomOut);
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zeichne();
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stage.setScene(new Scene(new Group(view)));
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stage.setResizable(false);
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stage.sizeToScene();
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stage.show();
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}
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}
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package edu.thi.phga.aparapi_test;
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import com.aparapi.Kernel;
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public class MandelbrotKernel extends Kernel {
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private double[] farbe;
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private double[] saturation;
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private double x1, x2, y1, y2;
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private int maxIter;
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public MandelbrotKernel(double[] farbe, double[] saturation) {
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this.farbe = farbe;
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this.saturation = saturation;
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}
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public void setParameters(double x1, double y1, double x2, double y2, int maxIter) {
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this.x1 = x1;
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this.y1 = y1;
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this.x2 = x2;
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this.y2 = y2;
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this.maxIter = maxIter;
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}
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// Formel:
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// z_n = { 0, n=0
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// z_(n-1)^2 + c, n>0
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// c element von C (Complex)
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// Bei uns ist c dann ein Pixel den wir einfärben
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// bzw. der Punkt(x, y) (offset) für eine bestimmte Zahl der Mandelbrot Menge
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// Schwarz == ist Teil der Menge (|z_k| <= 2)
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// Farbe == sonst (|z_k| > 2) (Frühzeitiger Schleifenabbruch)
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// Alle z_n beginnen bei 0
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// Iter 1: z = 0^2 + c
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// Iter 2: z = c^2 + c
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// Iter 3: z = (c^2 + c)^2 + c
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// ...
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// Abbruch: |z| > 2 || Iter == maxIter (200)
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// @Override public void run() {
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// int b = getGlobalId(0); // horizontaler Index
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// int h = getGlobalId(1); // vertikaler Index
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// double cx = x1 + (x2 - x1) * b / getGlobalSize(0);
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// double cy = y1 + (y2 - y1) * h / getGlobalSize(1);
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// double x = cx , y = cy;
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// double xx = x * x, yy = y * y;
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// int i;
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// for (i = 1; xx + yy < 4 && i <= maxIter; i++) {
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// y = 2 * x * y + cy;
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// x = xx - yy + cx;
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// yy = y * y;
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// xx = x * x;
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// }
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// int idx = h * getGlobalSize(0) + b;
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// farbe[idx] = log(i) * 360;
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// helligkeit[idx] = i < maxIter ? 1 : 0;
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// }
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@Override
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public void run() {
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int x = getGlobalId(0);
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int y = getGlobalId(1);
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int sizeX = getGlobalSize(0);
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int sizeY = getGlobalSize(1);
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double imageSizeX = x2 - x1;
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double imageSizeY = y2 - y1;
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// Skalierung
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double cR = x1 + imageSizeX * x / sizeX;
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double cI = y1 + imageSizeY * y / sizeY;
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double zR = cR;
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double zI = cI;
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double zRQ = zR * zR;
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double zIQ = zI * zI;
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double zAbs = zIQ + zRQ;
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int i = 0;
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for (i = 1; i <= maxIter && zAbs < 4; i++) {
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// WICHTIG REIHENFOLGE!!! zR wird überschrieben...
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zI = 2 * zR * zI + cI; // 2 * xyi + c_imag
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zR = zRQ - zIQ + cR; // x^2 - y^2 + c_real
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zIQ = zI * zI;
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zRQ = zR * zR;
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zAbs = zIQ + zRQ;
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}
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int index = y * sizeX + x;
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if (i < maxIter) {
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saturation[index] = min(i * log(i) / maxIter + 0.2, 1);
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farbe[index] = log(i) * 360;
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} else {
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saturation[index] = 0;
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}
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}
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// z = z*z + c
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// z^2 = (z_r + z_i*i) * (z_r + z_i*i)
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// = (z_r * z_r) + (z_r * z_i*i + z_r * z_i * i) - (z_i * z_i) <- [i^2 = -1]
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// = z_r^2 + 2*z_r*z_i*i - z_i^2
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// = z_r^2 - z_i^2 + 2*i*z_r*z_i
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// = x^2 - y^2 + 2xyi
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// real + imag
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// Nette Entdeckung :) #LaserShow WUBWUBWUBWUB
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// @Override
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// public void run() {
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// int sizeX = getGlobalSize(0);
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// int sizeY = getGlobalSize(1);
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// double imageSizeX = (x2 - x1);
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// double imageSizeY = (y2 - y1);
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// int x = getGlobalId(0);
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// int y = getGlobalId(1);
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// double c_r = x + imageSizeX / sizeX;
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// double c_i = y + imageSizeY / sizeY;
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// double z_r = 0; // komplexe zahl
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// double z_i = 0;
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// double zb = 0;
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// for (int i = 0; i < 200 && zb <= 4; i++) {
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// // z = z*z + c
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// // z^2
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// z_r = z_r * z_r - z_i * z_i;
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// z_i = z_r * z_i + z_r * z_i;
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// // z + c;
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// z_r += c_r;
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// z_i += c_i;
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// // sqrt(z_r^2 + z_i^2)
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// zb = sqrt(z_r * z_r + z_i * z_i);
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// }
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// if (zb <= 4) {
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// helligkeit[x + x * y] = 0;
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// } else {
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// helligkeit[x + x * y] = 1;
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// }
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// }
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}
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@ -0,0 +1,33 @@
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package edu.thi.phga.aparapi_test;
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import com.aparapi.Kernel;
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public class RauschfilterKernel extends Kernel {
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private float[] noisy;
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private float[] clean;
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private int len;
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RauschfilterKernel(float[] noisy, float[] clean, int len) {
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this.noisy = noisy;
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this.clean = clean;
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this.len = len;
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}
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@Override
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public void run() {
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// y_i = 1/N(x_-N/2 + x_-N/2+1 + ... + x_-1 + x_0 + x_1 + ... + x_N/2-1 + x_N/2)
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int i = getGlobalId();
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float sum = 0;
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for (int n = 1; n <= len; n++) {
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// To the right of x
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if (i + n < noisy.length) {
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sum += noisy[i + n];
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}
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// To the left of x
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if (i - n >= 0) {
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sum += noisy[i - n];
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}
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}
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// write into clean
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clean[i] = (sum + noisy[i]) / len;
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}
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}
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@ -1,4 +0,0 @@
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open module edu.thi.phga.aparapi_test {
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requires javafx.controls;
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requires aparapi;
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}
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@ -0,0 +1,4 @@
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// open module edu.thi.phga.aparapi_test {
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// requires aparapi;
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// requires javafx.controls;
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// }
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