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Using DukeScript's canvas API

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This commit is contained in:
Jaroslav Tulach 2015-02-25 12:23:16 +01:00
parent 2318df1560
commit 3bb171e4a1
2 changed files with 94 additions and 4 deletions
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5
teavm-samples/teavm-samples-benchmark/pom.xml
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@ -71,6 +71,11 @@
<version>2.7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.dukescript.canvas</groupId>
<artifactId>html5-canvas</artifactId>
<version>0.7.1</version>
</dependency>
</dependencies>
<build>

93
teavm-samples/teavm-samples-benchmark/src/main/java/org/teavm/samples/benchmark/bck2brwsr/BenchmarkStarter.java
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@ -15,13 +15,98 @@
*/
package org.teavm.samples.benchmark.bck2brwsr;
import com.dukescript.api.canvas.GraphicsContext2D;
import com.dukescript.api.canvas.Style;
import com.dukescript.canvas.html.HTML5Graphics;
import java.util.Timer;
import java.util.TimerTask;
import org.jbox2d.collision.shapes.CircleShape;
import org.jbox2d.collision.shapes.PolygonShape;
import org.jbox2d.collision.shapes.Shape;
import org.jbox2d.collision.shapes.ShapeType;
import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.Body;
import org.jbox2d.dynamics.Fixture;
import org.teavm.samples.benchmark.Scene;
public class BenchmarkStarter {
private static Scene s = new Scene();
private static final Timer TIMER = new Timer("Make Step");
private static final Scene scene = new Scene();
private static double startMillisecond;
private static int currentSecond;
private static double timeSpentCalculating;
public static void main(String... args) {
s.calculate();
throw new IllegalStateException("Success!");
public static void main(String[] args) {
startMillisecond = System.currentTimeMillis();
makeStep();
}
private static void makeStep() {
double start = System.currentTimeMillis();
scene.calculate();
double end = System.currentTimeMillis();
int second = (int)((System.currentTimeMillis() - startMillisecond) / 1000);
if (second > currentSecond) {
/*
HTMLElement row = document.createElement("tr");
resultTableBody.appendChild(row);
HTMLElement secondCell = document.createElement("td");
row.appendChild(secondCell);
secondCell.appendChild(document.createTextNode(String.valueOf(second)));
HTMLElement timeCell = document.createElement("td");
row.appendChild(timeCell);
timeCell.appendChild(document.createTextNode(String.valueOf(timeSpentCalculating)));
*/
timeSpentCalculating = 0;
currentSecond = second;
}
timeSpentCalculating += end - start;
render();
TIMER.schedule(new TimerTask() {
@Override
public void run() {
makeStep();
}
}, scene.timeUntilNextStep());
}
private static void render() {
GraphicsContext2D context = HTML5Graphics.getOrCreate("benchmark-canvas");
context.setFillStyle(new Style.Color("white"));
context.setStrokeStyle(new Style.Color("grey"));
context.fillRect(0, 0, 600, 600);
context.save();
context.translate(0, 600);
context.scale(1, -1);
context.scale(100, 100);
context.setLineWidth(0.01);
for (Body body = scene.getWorld().getBodyList(); body != null; body = body.getNext()) {
Vec2 center = body.getPosition();
context.save();
context.translate(center.x, center.y);
context.rotate(body.getAngle());
for (Fixture fixture = body.getFixtureList(); fixture != null; fixture = fixture.getNext()) {
Shape shape = fixture.getShape();
if (shape.getType() == ShapeType.CIRCLE) {
CircleShape circle = (CircleShape)shape;
context.beginPath();
context.arc(circle.m_p.x, circle.m_p.y, circle.getRadius(), 0, Math.PI * 2, true);
context.closePath();
context.stroke();
} else if (shape.getType() == ShapeType.POLYGON) {
PolygonShape poly = (PolygonShape)shape;
Vec2[] vertices = poly.getVertices();
context.beginPath();
context.moveTo(vertices[0].x, vertices[0].y);
for (int i = 1; i < poly.getVertexCount(); ++i) {
context.lineTo(vertices[i].x, vertices[i].y);
}
context.closePath();
context.stroke();
}
}
context.restore();
}
context.restore();
}
}