在线手册

  • canvas settransform

    ... a rectangle, reset and create a new transformation matrix with setTransform(), draw the rectangle again, reset and create a new transformation matrix, then draw the rectangle again. Notice that each time you call setTransform(), it resets the ...

  • canvas textbaseline

    ... ("myCanvas"); var canvOK=1; try {c.getContext("2d");} catch (er) {canvOK=0;} if (canvOK==1) { var ctx=c.getContext("2d"); //Draw a red line at y=100 ctx.strokeStyle="red"; ctx.moveTo(5,100); ctx.lineTo(395,100); ctx.stroke(); ctx.font ...

  • canvas transform

    ... HTML canvas transform() Method Canvas Object Example Draw a rectangle, add a new transformation matrix with transform(), draw the rectangle again, add a new transformation matrix, then draw the rectangle again. Notice that each time ...

  • dom obj canvas

    ... in HTML5. The HTML5 <canvas> tag is used to draw graphics, on the fly, with JavaScript. Access a Canvas Object You ... for graphics) - you must use a script to actually draw the graphics. The getContext() method returns an object that ...

  • canvas clip

    ... var ctx=c.getContext("2d"); // Clip a rectangular area ctx.rect(50,20,200,120); ctx.stroke(); ctx.clip(); // Draw red rectangle after clip() ctx.fillStyle="red"; ctx.fillRect(0,0,150,100); </script> Try it yourself ...

  • canvas closepath

    ... The closePath() method creates a path from the current point back to the starting point. Tip: Use the stroke() method to actually draw the path on the canvas. Tip: Use the fill() method to fill the drawing (black is default). Use the fillStyle ...

  • canvas lineto

    ... y-coordinate of where to create the line to Play it » More Examples Example Draw a path, shaped as the letter L: YourbrowserdoesnotsupporttheHTMLcanvastag. var c=document.getElementById("myCanvas2"); var ctx ...

  • canvas settransform

    ... a rectangle, reset and create a new transformation matrix with setTransform(), draw the rectangle again, reset and create a new transformation matrix, then draw the rectangle again. Notice that each time you call setTransform(), it resets the ...

  • canvas textbaseline

    ... ("myCanvas"); var canvOK=1; try {c.getContext("2d");} catch (er) {canvOK=0;} if (canvOK==1) { var ctx=c.getContext("2d"); //Draw a red line at y=100 ctx.strokeStyle="red"; ctx.moveTo(5,100); ctx.lineTo(395,100); ctx.stroke(); ctx.font ...

  • canvas transform

    ... canvas transform() Method HTML Canvas Reference Example Draw a rectangle, add a new transformation matrix with transform(), draw the rectangle again, add a new transformation matrix, then draw the rectangle again. Notice that each time ...

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