04 Low-Level User Interface

Objectives

Canvas

Canvas

Coordinate System

Hello, world! on Canvas

Hello, world! Canvas

Adding a Command

Adding a Command

Adding a Command

Adding a Command

Key Events

Key Codes

Game Actions

Graphics

Color

Color

Color methods

Fonts

Fonts

Fonts

Stroke Style

Stroke Style

Clipping

Clipping

Anchor Points

Anchor Points

Anchor Points

Drawing Text

Drawing Text

Drawing Lines

Drawing Lines

Drawing Rectangles

Drawing Rectangles

Drawing Rectangles

Drawing Arcs

Drawing Arcs

Drawing Images

Image Anchor Points

Drawing Images

Drawing Images