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Write a simple canvas program for HTML5 canvas

Source: Internet
Author: User
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Write a simple canvas program for HTML5 canvas

Ideas:

Get the coordinates of CTX. moveTo (E. clientX-10, E. clientY-10) when pressed, and then move the mouse on the wire continuously ,! Isdown | CTX. lineto (E. clientX-10, E. clientY-10, 5, 5) when the mouse is opened, naturally it is necessary to set isdown to false.
Then summarize the key steps of the draw line.
The first step is to obtain the canvas.
Step 2: start to draw a line. Beginpath ()
The third step is to move the lines moveTo () and lineto ().
Step 4 is to draw a line stroke ().

Code:

 

<! Doctype HTML> <HTML lang = "en"> 

:


 




 

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Related Keywords:
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