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HTML5 Canvas: Styling Shapes and Lines

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Questions and Answers

What is the default value for line width?

10 (correct)

What is the purpose of the lineDashOffset property?

To set the line cap

To set the line join

To create dotted and dashed line patterns (correct)

To set the line width

What is the purpose of the getLineDash() method?

To create a simple stroked line

To set the line width

To get the current line-dash pattern (correct)

To set the line dash pattern

What is the input parameter for the setLineDash() method?

An array of line values Signup and view all the answers

What is the output when no input is provided to the setLineDash() method?

A simple stroked line Signup and view all the answers

What is the default value of the lineCap property in HTML5 Canvas?

butt Signup and view all the answers

What is the purpose of the lineJoin property in HTML5 Canvas?

To set the appearance of the corners where lines are joined Signup and view all the answers

What is the default value of the lineWidth property in HTML5 Canvas?

1 unit Signup and view all the answers

What is the purpose of the miterLimit property in HTML5 Canvas?

To change the distance of outside connection to which inside connection point can be placed Signup and view all the answers

What is the primary method of drawing a line in HTML5 Canvas?

Using the lineTo path element Signup and view all the answers

How many accepted input values are there for the lineJoin property in HTML5 Canvas?

3 Signup and view all the answers

Study Notes

Adding Styles to HTML5 Canvas

In HTML5 Canvas, various styles can be added to different shapes, similar to adding colors.
Styles can be applied to lines using the lineTo path element.

Styling Lines

The line properties used for styling lines include:
- lineWidth: assigns the width of the lines drawn, with a default value of 1 unit.
- lineCap: styles the ends of the line, with possible values of 'butt' (default), 'round', and 'square'.
- lineJoin: sets the appearance of the corners where lines are joined, with possible values of 'miter' (default), 'bevel', and 'round'.
- miterLimit: determines the distance of the outside connection to the inside connection point when two angles join at a sharp angle, with a default value of 10.
- lineDashOffset: specifies the dash pattern for the lines, used to create dotted and dashed line patterns.

Methods for Line Styling

The getLineDash() method returns the current line-dash pattern containing an even number of positive numbers.
The setLineDash() method sets the dash lines to create a shape or pattern using Canvas, taking a segment array as input.