flutter/flame
1
0
Fork 0
mirror of https://github.com/flame-engine/flame.git synced 2025-11-04 04:47:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

move prepare canvas to position component

Browse Source
This commit is contained in:
feroult
2017-11-15 16:27:30 -02:00
parent 84014a5591
commit a0e24f7a0a
1 changed files with 12 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
lib/component.dart
View File

@ -12,9 +12,7 @@ abstract class Component {
} }
abstract class PositionComponent extends Component { abstract class PositionComponent extends Component {
double x = 0.0, double x = 0.0, y = 0.0, angle = 0.0;
y = 0.0,
angle = 0.0;
double angleBetween(PositionComponent c) { double angleBetween(PositionComponent c) {
return (atan2(c.x - this.x, this.y - c.y) - PI / 2) % (2 * PI); return (atan2(c.x - this.x, this.y - c.y) - PI / 2) % (2 * PI);
@ -23,14 +21,18 @@ abstract class PositionComponent extends Component {
double distance(PositionComponent c) { double distance(PositionComponent c) {
return sqrt(pow(this.y - c.y, 2) + pow(this.x - c.x, 2)); return sqrt(pow(this.y - c.y, 2) + pow(this.x - c.x, 2));
} }
void prepareCanvas(Canvas canvas) {
canvas.translate(x, y);
canvas.rotate(angle); // TODO: rotate around center
}
} }
abstract class SpriteComponent extends PositionComponent { abstract class SpriteComponent extends PositionComponent {
double width, height; double width, height;
Image image; Image image;
final Paint paint = new Paint() final Paint paint = new Paint()..color = new Color(0xffffffff);
..color = new Color(0xffffffff);
SpriteComponent.square(double size, String imagePath) SpriteComponent.square(double size, String imagePath)
: this.rectangle(size, size, imagePath); : this.rectangle(size, size, imagePath);
@ -43,16 +45,11 @@ abstract class SpriteComponent extends PositionComponent {
render(Canvas canvas) { render(Canvas canvas) {
if (image != null) { if (image != null) {
_prepareCanvas(canvas); prepareCanvas(canvas);
_drawImage(canvas); _drawImage(canvas);
} }
} }
void _prepareCanvas(Canvas canvas) {
canvas.translate(x, y);
canvas.rotate(angle); // TODO: rotate around center
}
void _drawImage(Canvas canvas) { void _drawImage(Canvas canvas) {
final Rect outputRect = new Rect.fromLTWH(0.0, 0.0, width, height); final Rect outputRect = new Rect.fromLTWH(0.0, 0.0, width, height);
final Size imageSize = final Size imageSize =