Module

01

Lines

/ Lesson

01.1

The canvas is a grid

9

min

Free preview

Coordinates, pixels and why y points down.

01.1The canvas is a grid
Build it
▶
04:12 / 09:00

Preview renders the module’s sketch live. Drop your lesson video into the player’s Video field to replace it.

Preview renders the module’s sketch live. Drop your lesson video into the player’s Video field to replace it.

Space to play · ← → to seek

Space to play · ← → to seek

( The code )

The line that does the work.

sketch.js

ctx.fillRect(x, y, 1, 1)

Open the Lab from the player and change the numbers in this line first.

( What it draws ) One render of this module’s sketch.

In this lesson

Coordinates, pixels and why y points down. We build it live in about 9 minutes, then you change it in the Lab until it is yours.

Try this after

Change one number at a time and write down what it did. Most of the good surprises in this course come from the third or fourth change, not the first.

( In this module )

Keep going.

Next lesson →

Your first line

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