List of usage examples for com.google.gwt.canvas.dom.client Context2d beginPath
public final native void beginPath() ;
From source file:examples.geometry.demos.TriangulationExample.java
License:Open Source License
@Override protected ControllableShape[] createShapes(Canvas canvas, EventBus eventBus) { return new ControllableShape[] { new ControllableShape(canvas, eventBus) { {/*ww w.ja va 2s . c o m*/ addControlPoints(new Point(300 / 2, 100 / 2), new Point(100 / 2, 200 / 2), new Point(200 / 2, 300 / 2), new Point(100 / 2, 500 / 2), new Point(300 / 2, 400 / 2), new Point(500 / 2, 600 / 2), new Point(600 / 2, 300 / 2), new Point(500 / 2, 400 / 2), new Point(500 / 2, 200 / 2), new Point(300 / 2, 200 / 2)); } @Override public Polygon getShape() { Polygon p = new Polygon(getPoints()); return p; } @Override public void onDraw(Canvas canvas) { Context2d context = canvas.getContext2d(); Polygon p = getShape(); Polygon[] triangulation; try { triangulation = p.getTriangulation(); } catch (NonSimplePolygonException x) { triangulation = new Polygon[] { p }; } for (Polygon triangle : triangulation) { context.beginPath(); context.setStrokeStyle("red"); for (Line s : triangle.getOutlineSegments()) { Point p1 = s.getP1(); Point p2 = s.getP2(); context.moveTo(p1.x, p1.y); context.lineTo(p2.x, p2.y); context.stroke(); } context.closePath(); } double lineWidth = context.getLineWidth(); context.setLineWidth(lineWidth + 2); context.setStrokeStyle("black"); context.beginPath(); for (Line s : p.getOutlineSegments()) { Point p1 = s.getP1(); Point p2 = s.getP2(); context.moveTo(p1.x, p1.y); context.lineTo(p2.x, p2.y); context.stroke(); } context.closePath(); context.setLineWidth(lineWidth); } } }; }
From source file:forplay.html.HtmlPath.java
License:Apache License
void replay(Context2d ctx) { ctx.beginPath(); int len = list.length(), i = 0; double x = 0, y = 0; while (i < len) { switch ((int) list.get(i++)) { case CMD_MOVE: { x = list.get(i++);/*from w w w .ja v a 2 s .c o m*/ y = list.get(i++); ctx.moveTo(x, y); break; } case CMD_LINE: { x = list.get(i++); y = list.get(i++); ctx.lineTo(x, y); break; } case CMD_QUAD: { double cpx = list.get(i++); double cpy = list.get(i++); x = list.get(i++); y = list.get(i++); ctx.quadraticCurveTo(cpx, cpy, x, y); break; } case CMD_ARC: { double curX = x, curY = 0; double radius = list.get(i++); x = list.get(i++); y = list.get(i++); ctx.arcTo(curX, curY, x, y, radius); break; } case CMD_CLOSE: { ctx.closePath(); break; } default: throw new AssertionError("Corrupt command list"); } } }
From source file:net.exclaimindustries.paste.braket.client.ui.BracketCell.java
License:BSD License
private void drawLeftBracket() { Context2d con = initBracketCanvas(mCanvas); con.beginPath(); int width = mCanvas.getOffsetWidth(); int height = mCanvas.getOffsetHeight(); if (!mTerminus) { con.moveTo(0, height / 4.0);/* ww w .j a v a 2s .c om*/ con.lineTo(width / 2.0, height / 4.0); con.lineTo(width / 2.0, (3.0 * height) / 4.0); con.lineTo(0, (3.0 * height) / 4); con.stroke(); } con.moveTo(width / 2.0, height / 2.0); con.lineTo(width, height / 2.0); con.stroke(); }
From source file:net.exclaimindustries.paste.braket.client.ui.BracketCell.java
License:BSD License
private void drawRightBracket() { Context2d con = initBracketCanvas(mCanvas); con.beginPath(); int width = mCanvas.getOffsetWidth(); int height = mCanvas.getOffsetHeight(); if (!mTerminus) { con.moveTo(width, height / 4.0); con.lineTo(width / 2.0, height / 4.0); con.lineTo(width / 2.0, (3.0 * height) / 4.0); con.lineTo(width, (3.0 * height) / 4.0); con.stroke();//from ww w.jav a 2s. c o m } con.moveTo(width / 2.0, height / 2.0); con.lineTo(0, height / 2.0); con.stroke(); }
From source file:net.exclaimindustries.paste.braket.client.ui.BracketCell.java
License:BSD License
private void drawFinalBracket() { Context2d con = initBracketCanvas(mCanvas); con.beginPath(); int width = mCanvas.getOffsetWidth(); int height = mCanvas.getOffsetHeight(); con.moveTo(0, height / 2.0);/*from ww w.j ava 2s. c o m*/ con.lineTo(width, height / 2.0); con.stroke(); }
From source file:org.catrobat.html5player.client.Scene.java
License:Open Source License
/** * FOR TESING/*from w w w.j a v a 2s . co m*/ */ public void drawAxis() { Context2d ctx = sceneCanvas.getContext2d(); ctx.beginPath(); ctx.moveTo(getSceneWidth() / 2, 0); ctx.lineTo(getSceneWidth() / 2, getSceneHeight()); ctx.stroke(); ctx.closePath(); ctx.beginPath(); ctx.moveTo(0, getSceneHeight() / 2); ctx.lineTo(getSceneWidth(), getSceneHeight() / 2); ctx.stroke(); ctx.closePath(); }
From source file:org.cesiumjs.cs.scene.interaction.MarkerGroup.java
License:Apache License
public static BillboardOptions createBillboard(DrawInteractionOptions options) { Canvas canvas = Canvas.createIfSupported(); Context2d context = canvas.getContext2d(); context.setFillStyle(options.color.toCssColorString()); context.setStrokeStyle(options.outlineColor.toCssColorString()); context.setLineWidth(options.outlineWidth); context.translate(canvas.getCoordinateSpaceWidth() / 2, canvas.getCoordinateSpaceHeight() / 2); context.beginPath(); context.arc(0, 0, options.pixelSize, 0, Math.PI * 2, true); context.closePath();//from w w w. j a va 2s . c o m context.stroke(); context.fill(); BillboardOptions billboard = new BillboardOptions(); billboard.horizontalOrigin = HorizontalOrigin.CENTER(); billboard.verticalOrigin = VerticalOrigin.CENTER(); billboard.imageCanvas = canvas.getCanvasElement(); return billboard; }
From source file:org.cleanlogic.cesiumjs4gwt.showcase.examples.ParticleSystemFireworks.java
License:Apache License
private CanvasElement getImage() { if (!Cesium.defined(particleCanvas)) { particleCanvas = RootPanel.get().getElement().getOwnerDocument().createCanvasElement(); particleCanvas.setWidth(20);/*from w w w. j a v a 2s .c om*/ particleCanvas.setHeight(20); Context2d context2d = particleCanvas.getContext2d(); context2d.beginPath(); context2d.arc(8, 8, 8, 0, Math.TWO_PI(), true); context2d.closePath(); context2d.setFillStyle("rgb(255, 255, 255)"); context2d.fill(); Cesium.log(particleCanvas); } return particleCanvas; }
From source file:org.cruxframework.crux.widgets.client.colorpicker.HuePicker.java
License:Apache License
private void drawGradient() { Context2d ctx = canvas.getContext2d(); // draw gradient ctx.setFillStyle("#ffffff"); ctx.fillRect(0, 0, 26, 180);/*from ww w . ja va 2 s .c o m*/ for (int y = 0; y <= 179; y++) { String hex = ColorUtils.hsl2hex(y * 2, 100, 100); ctx.setFillStyle("#" + hex); ctx.fillRect(3, y, 20, 1); } // draw handle if (handleY >= 0) { ctx.setFillStyle("#000000"); ctx.beginPath(); ctx.moveTo(3, handleY); ctx.lineTo(0, handleY - 3); ctx.lineTo(0, handleY + 3); ctx.closePath(); ctx.fill(); ctx.moveTo(23, handleY); ctx.lineTo(26, handleY - 3); ctx.lineTo(26, handleY + 3); ctx.closePath(); ctx.fill(); } }
From source file:org.cruxframework.crux.widgets.client.colorpicker.SaturationLightnessPicker.java
License:Apache License
private void drawGradient(boolean drawHandle) { Context2d ctx = canvas.getContext2d(); // draw gradient for (int x = 0; x <= 179; x++) { CanvasGradient grad = ctx.createLinearGradient(x, 0, x, 179); int s = Math.round(x * 100 / 179); String hex = ColorUtils.hsl2hex(hue, s, 0); grad.addColorStop(0, "#" + hex); hex = ColorUtils.hsl2hex(hue, s, 100); grad.addColorStop(1, "#" + hex); ctx.setFillStyle(grad);/* w ww . j av a 2s . co m*/ ctx.fillRect(x, 0, 1, 180); } // draw handle if (drawHandle) { ctx.beginPath(); ctx.arc(handleX, handleY, 3, 0, Math.PI * 2, false); ctx.closePath(); ctx.setFillStyle("#ffffff"); ctx.fill(); ctx.beginPath(); ctx.arc(handleX, handleY, 2, 0, Math.PI * 2, false); ctx.closePath(); ctx.setFillStyle("#000000"); ctx.fill(); } }