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Aprenda Rectangles and Filled Shapes | Canvas Setup and Drawing Fundamentals
JavaScript Canvas Drawing and Animation

bookRectangles and Filled Shapes

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The fillStyle property allows you to set the color, gradient, or pattern used to fill shapes drawn on the canvas. You can assign a color using a string like "#ff0000" for red or "rgba(52, 152, 219, 0.5)" for a semi-transparent blue. Similarly, strokeStyle sets the color, gradient, or pattern for the outlines of shapes. Both properties accept CSS color values, enabling a wide variety of visual effects.

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To remove part of your drawing or reset a specific area, use clearRect(x, y, width, height). This method erases everything within the defined rectangle, allowing you to clear mistakes, update animations, or manage dynamic content efficiently. For example, calling ctx.clearRect(0, 0, canvas.width, canvas.height) will clear the entire canvas.

1. Which method would you use to draw a filled rectangle?

2. What property is used to set the color for filling shapes?

question mark

Which method would you use to draw a filled rectangle?

Select the correct answer

question mark

What property is used to set the color for filling shapes?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 1. Capítulo 5

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bookRectangles and Filled Shapes

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The fillStyle property allows you to set the color, gradient, or pattern used to fill shapes drawn on the canvas. You can assign a color using a string like "#ff0000" for red or "rgba(52, 152, 219, 0.5)" for a semi-transparent blue. Similarly, strokeStyle sets the color, gradient, or pattern for the outlines of shapes. Both properties accept CSS color values, enabling a wide variety of visual effects.

index.html

index.html

copy

To remove part of your drawing or reset a specific area, use clearRect(x, y, width, height). This method erases everything within the defined rectangle, allowing you to clear mistakes, update animations, or manage dynamic content efficiently. For example, calling ctx.clearRect(0, 0, canvas.width, canvas.height) will clear the entire canvas.

1. Which method would you use to draw a filled rectangle?

2. What property is used to set the color for filling shapes?

question mark

Which method would you use to draw a filled rectangle?

Select the correct answer

question mark

What property is used to set the color for filling shapes?

Select the correct answer

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 1. Capítulo 5
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