draw_vertexs

https://github.com/kyorohiro/hello_skyengine/tree/master/draw_vertices

// following code is checked in 2016/01/22
import 'package:flutter/widgets.dart';
import 'package:flutter/rendering.dart';
import 'dart:ui' as sky;
void main() {
runApp(new DrawVertexsWidget()); //new GameTest());
}
class DrawVertexsWidget extends OneChildRenderObjectWidget {
RenderObject createRenderObject() {
return new DrawVertexsObject();
}
}
class DrawVertexsObject extends RenderBox {
@override
void performLayout() {
size = constraints.biggest;
}
void paint(PaintingContext context, Offset offset) {
context.canvas.scale(2.5, 2.5);
context.canvas.translate(50.0, 50.0);
paintWithTriangle(context, offset);
}
void paintWithTriangle(PaintingContext context, Offset offset) {
Paint paint = new Paint();
sky.VertexMode vertexMode = sky.VertexMode.triangles;
List<Point> vertices = [
new Point(0.0, 0.0),
new Point(10.0, 50.0),
new Point(50.0, 60.0)
];
List<Point> textureCoordinates = [];
List<Color> colors = [
const Color.fromARGB(0xaa, 0xff, 0x00, 0x00),
const Color.fromARGB(0xaa, 0x00, 0xff, 0x00),
const Color.fromARGB(0xaa, 0x00, 0x00, 0xff)
];
sky.TransferMode transferMode = sky.TransferMode.color;
List<int> indicies = [0, 1, 2];
context.canvas.drawVertices(vertexMode, vertices, textureCoordinates,
colors, transferMode, indicies, paint);
}
}