context.lineTo(cas.width-rightOffset-arrowHeight,y-arrowWidth/2);
时间: 2024-06-04 17:12:46 浏览: 158
TMS Pack for FireMonkey2.3.0.1
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This line of code is used in a JavaScript canvas drawing context to draw a line that starts from the current point and ends at a specified point on the canvas.
The canvas width is subtracted by the value of rightOffset and arrowHeight, and the resulting value is used as the x-coordinate of the endpoint of the line. The y-coordinate of the endpoint is calculated by subtracting half the value of arrowWidth from the value of y.
This code is typically used to draw an arrow on a canvas element. The arrow points towards the right side of the canvas, and its size and position can be adjusted by changing the values of rightOffset, arrowHeight, and arrowWidth.
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