Draw text:
Canvas: Fonts are required
Canvas color settings:
Enlarge fonts without distortion:
Draw the picture:
Draw pictures in complex ways:
Draw the shader:
Draw a line: starting position, end position, color, thickness
2d and 3d display:
Draw a rectangle:
Draw the wireframe:
Get input events:
Define playcontroller:
Click input event:
Click to trigger results:
Draw the clicked area:
Must be enabled: click event
Key points:
When a click event occurs, the parent HUD must be called (the simplest solution), because there is a reset function in it, which can reset each click and drawing, so it will not be repeated every time the click position is refreshed. Construction issues.
Binding response events: There is an implementation in bird:
