Translate, rotate, scale, and canvasrotate for Canvas plottingCanvas operations
The canvas drawing environment is changed through translate (), scale (), rotate (), setTransform (), and transform (), which will affect the transformation matrix of
Canvas learning Summary 3: Draw a path-line segment and canvas Line Segment
In the Canvas drawing environment, some are the method for drawing images immediately, and some are based on paths.
There are only two ways to draw a graph immediately:
Introduction to Canvas operationsThe canvas drawing environment is changed by translate (), scale (), rotate (), SetTransform (), and transform (), which affect the transformation matrix of the canvas.
Function
Method
1.translate (x, y): pan, move the coordinate origin of the canvas to the left and right of the X, and move the Y.canvas in the top and bottom direction by the default position (0,0).Example: If the canvas Origin falls on (translate), then the origin
Custom components-draw the clock and the component draw the clock
1,
2. Canvas object details
1. translate (x, y): translate, move the coordinate origin of the canvas to the left and right directions, and move y. the default position of the canvas
I. First, let's talk about the SAVE and restore functions of canvas. This is a very attractive part of canvas.
The ondraw method will pass in a canvas object, which is the canvas you use to draw the visual interface of the control.
In the ondraw
Recently, I was busy beautifying the interface. However, WinCE provided fewer functions than the desktop, and fewer controls were available on the Internet (later I found that there were still some, there is no right to speak without research! :().
How does a geometric artboard draw an ellipse? The geometric sketchpad is a dynamic geometric tool which is suitable for the vector analysis, drawing and function drawing of mathematics, plane geometry and physics. This tool can draw various types
Zookeeper
ArcTo (x1, y1, x2, y2, radius );
Add the moveTo vertex (x0, y0 );
Step 1: Find the cut point
X-ray (x1, y1), (x0, y0), X-ray (x1, y1), (x2, y2), X-ray (x1, y1 ), make the angular bisector, find the center of the circle, and make the
InstanceDraws a rectangle at position (10,10) and sets the new (0,0) position to (70,70). Draw the new rectangle again (note that the rectangle is now drawn from the position (80,80)):Your Browser does not support the HTML5 canvas tag.Javascript:var
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.