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add: instancedMesh and patched AbstractMesh and basic 'object' diff
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| import React, { useState, useCallback } from 'react' | ||
| import { Engine, Scene } from '../../../dist/react-babylonjs' | ||
| import { Vector3, Color3, Color4 } from '@babylonjs/core' | ||
| import { defineGrid, extendHex } from 'honeycomb-grid' | ||
| import '../../style.css' | ||
|
|
||
| export default { title: 'Babylon Basic' }; | ||
|
|
||
| const GRID_WIDTH = 60; | ||
| const GRID_HEIGHT = 40; | ||
| const HOVER_COLOR = new Color4(0.8, 0.8, 0.8, 1); | ||
|
|
||
| export const Instances = () => { | ||
| const [_, setState] = useState(false); | ||
| const createUpdate = () => { | ||
| setState((state) => !state); | ||
| }; | ||
|
|
||
| // const hexRef = useRef<CreatedInstance<Mesh>>(null); | ||
| const [hexMesh, setHexMesh] = useState(null); | ||
| const hexRef = useCallback((node) => { | ||
| if (node) { | ||
| const mesh = node.hostInstance; | ||
| mesh.registerInstancedBuffer("color", 4); | ||
| setHexMesh(mesh); | ||
| } | ||
| }, []); | ||
|
|
||
| const Hex = extendHex({ | ||
| size: 1, // default: 1 | ||
| orientation: 'flat', // default: 'pointy' | ||
| color: new Color4(0, 0.68, 1), | ||
| hovered: false | ||
| }) | ||
|
|
||
| // create a Grid factory that uses the Hex factory: | ||
| const Grid = defineGrid(Hex) | ||
|
|
||
| // create a rectangle grid with each tile assigned a random color: | ||
| const grid = Grid.rectangle({ width: GRID_WIDTH, height: GRID_HEIGHT, onCreate: (hex) => { | ||
| hex.color = new Color4(Math.random(), Math.random(), Math.random(), 1); | ||
| hex.isHovered = Math.random() < 0.1; | ||
| } }) | ||
|
|
||
| return ( | ||
| <div className="App"> | ||
| <button onClick={createUpdate}>Change hex colours</button> | ||
| <Engine antialias adaptToDeviceRatio canvasId="babylonJS"> | ||
| <Scene clearColor={Color4.FromColor3(Color3.White())}> | ||
| <arcRotateCamera | ||
| name="arc" | ||
| target={Vector3.Zero()} | ||
| minZ={0.001} | ||
| alpha={-Math.PI / 2} | ||
| beta={Math.PI / 1.2} | ||
| radius={Math.max(GRID_WIDTH, GRID_HEIGHT) * 1.5} | ||
| /> | ||
| <hemisphericLight | ||
| name="light1" | ||
| intensity={0.9} | ||
| direction={Vector3.Down()} | ||
| /> | ||
| <disc | ||
| ref={hexRef} | ||
| name="hex" | ||
| radius={1} | ||
| tessellation={6} | ||
| isVisible={false} | ||
| /> | ||
| {hexMesh && | ||
| Array.from(grid.entries()).map(entry => { | ||
| const [i, tile] = entry; | ||
| const {x, y} = tile.toPoint(); | ||
| console.log(`${i}->{${x},${y}} (${tile.width()})`) | ||
| return ( | ||
| <instancedMesh | ||
| source={hexMesh} | ||
| key={i} | ||
| name={`hex-${i}`} | ||
| position={new Vector3((x+tile.width()/2) - (GRID_WIDTH * 0.75), (y+tile.height()/2) - (Math.sqrt(3) * GRID_HEIGHT / 2), 0)} | ||
| instancedBuffers={{color: tile.isHovered ? HOVER_COLOR : tile.color}} | ||
| /> | ||
| ) | ||
| }) | ||
| } | ||
| </Scene> | ||
| </Engine> | ||
| </div> | ||
| ); | ||
| } |
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