Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | 1x 1x 1x | /*!
* Copyright 2020 Cognite AS
*/
import * as THREE from 'three';
export interface PickingInput {
coords: {
x: number;
y: number;
};
scene: THREE.Scene;
camera: THREE.PerspectiveCamera;
renderer: THREE.WebGLRenderer;
}
const storage = {
renderTarget: new THREE.WebGLRenderTarget(1, 1),
pixelBuffer: new Uint8Array(4)
};
export function pickPixelColor(input: PickingInput, clearColor: THREE.Color, clearAlpha: number) {
const { renderTarget, pixelBuffer } = storage;
const { scene, camera, coords, renderer } = input;
const pickCamera = camera.clone();
pickCamera.setViewOffset(
renderer.domElement.clientWidth,
renderer.domElement.clientHeight,
((coords.x + 1.0) / 2.0) * renderer.domElement.clientWidth,
((1.0 - coords.y) / 2.0) * renderer.domElement.clientHeight,
1,
1
);
const currentClearColor = renderer.getClearColor().clone();
const currentClearAlpha = renderer.getClearAlpha();
renderer.setRenderTarget(renderTarget);
renderer.setClearColor(clearColor, clearAlpha);
renderer.clearColor();
renderer.render(scene, pickCamera);
renderer.setRenderTarget(null);
renderer.setClearColor(currentClearColor, currentClearAlpha);
renderer.readRenderTargetPixels(renderTarget, 0, 0, 1, 1, pixelBuffer);
return pixelBuffer;
}
|