Generate binary polygon data in debug layer

[kylebarron]

We could easily generate binary polygon data here:

deck.gl-raster/packages/deck.gl-raster/src/raster-debug-layer.ts

Lines 151 to 177 in 4a28770

	function reprojectorToTriangles(
	reprojector: RasterReprojector,
	): ParsedTriangle[] {
	const positions = reprojector.exactOutputPositions;
	const triangles = reprojector.triangles;
	const trianglePolygons: ParsedTriangle[] = [];
	for (let triangleIdx = 0; triangleIdx < triangles.length / 3; ++triangleIdx) {
	const a = triangles[triangleIdx * 3]!;
	const b = triangles[triangleIdx * 3 + 1]!;
	const c = triangles[triangleIdx * 3 + 2]!;
	const coords = [
	[positions[a * 2]!, positions[a * 2 + 1]!],
	[positions[b * 2]!, positions[b * 2 + 1]!],
	[positions[c * 2]!, positions[c * 2 + 1]!],
	[positions[a * 2]!, positions[a * 2 + 1]!],
	];
	trianglePolygons.push({
	idx: triangleIdx,
	geom: coords,
	});
	}
	return trianglePolygons;
	}