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Building and Drawing Paths

In this exercise we will cover building paths and the JavaScript path drawing methods on the canvas element. <!DOCTYPE html> <html> <head> <style> body{ margin:40px; background:#666; } #my_canvas{ background:#FFF; border:#000 1px solid; } </style> <script> function draw(){ var ctx = document.getElementById('my_canvas').getContext('2d'); // beginPath() // Resets the current default path // fill() // Fills subpaths on the current default path // stroke() // Strokes the current default path // clip() // Makes a clipping region out of a path // closePath() // Close current path // moveTo(x, y) // Creates a new subpath with the given point // lineTo(x, y) // creates a new line along the current subpath // isPointInPath(x, y) // Determines if a specified point is in a path // rect(x, y, w, h) // arc(x, y, radius, startAngle, endAngle, anticlockwise) // arcTo(x1, y1, x2, y2, radius) // x1, y1 are the subpath // quadraticCurveTo(cpx, cpy, x, y) cp = bezier control point // bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) } window.onload = draw; </script> </head> <body> <canvas id="my_canvas" width="500" height="350"></canvas> </body> </html>
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JavaScript Videos

Canvas Programming

2D Context Object and Rectangle MethodsFill and Stroke Styles Color Gradient PatternLine Styles for Lines and StrokesBuilding and Drawing PathsDrawing Images and VideosDrawing Text on CanvasRendering Shadows on CanvasCanvas Transformation EffectsPixel Manipulation on CanvasCompositing on the CanvasDynamic Centering and Alignment on the CanvasCanvas Animation and App InitializationObject Oriented Assets OOP on CanvasDetect Mouse Coordinates on CanvasAnimated Background Layers on Canvas TutorialKeyboard Control and MovementJSON Object Arrays and Loops on CanvasHit Detection Mouse Touch Over Object ArraysCollision Detection Hit Game EnemiesParticle Effect System Tutorial Snow Falling AnimationInteractive Canvas Imaging Applications JavaScript PHP TutorialCircular Progress Loader Canvas JavaScript Programming Tutorial