Canvas in HTML 5
The graphic surface of HTML 5 is a universal tool for creating applications, both for smartphones or desktop computers.
Canvas is already used to make games and therefore constitutes an alternative to Flash, as it is used for more serious applications such as mapping, geometric, architectural plans, etc...
A major trend among webmasters is currently wear old software on this new medium. We thus see Sim City, Wolfenstein 3D, appear on Web pages.
From first steps to more elaborate drawings.
How many canvas tags in a Web page?
Actually, according to the demo, 10000 are possible!
Drawing an arc. With the arc method.
The arcTo method. Annotated example to understand how it works.
Circle, arcs and pie chart. A pie chart is designed by filling sectors in a circle with different colors. Labels are added with a little more trigonometry.
Drawing an ellipse with the arc method. We use both the arc and scale method.
Basic transformations on an image. How to flip a picture, scale it, rotate it, etc ... These demonstrations are also an opportunity to learn about the possibility of canvas and see the effects of scale and translate functions.
How to give a transparency effect to an image.
SVG in canvas.
Pie chart generator
Online tool to create automatically a chart from a list of values.
Drawing a speech bubble in Canvas
How to put a quote into a comic bubble.
Applications and demos of Canvas
Colour Picker, 3D Maze, etc.
List of demos. The water is animated on the the image on the right.
W3C spec of Canvas 2D.
Making a paint program in Canvas