82 lines
1.8 KiB
JavaScript
82 lines
1.8 KiB
JavaScript
export const Kernel =
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{
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Corners:
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[
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[ 1, 1, -1],
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[ 1, -1, -1],
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[-1, 1, -1],
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[-1, -1, -1],
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[ 1, 1, 1],
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[ 1, -1, 1],
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[-1, 1, 1],
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[-1, -1, 1]
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],
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Cardinal:
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[
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[ 1, 0, 0],
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[ 0, 1, 0],
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[-1, 0, 0],
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[ 0, -1, 0],
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[ 0, 0, 1],
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[ 0, 0, -1]
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],
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Loop(inList, inVector, inHandler)
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{
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for(let i=0; i<inList.length; i++)
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{
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let delta = inList[i];
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if(inHandler(inVector[0]+delta[0], inVector[1]+delta[1], inVector[2]+delta[2]))
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{
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return;
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}
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}
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}
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};
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export const Region =
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{
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Create()
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{
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return {
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Voxels:[],
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Filled:[],
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Surface:[]
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};
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},
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CoordsToIndex(inX, inY, inZ)
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{
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return inX + inY*16 + inZ*256;
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},
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IndexToCoords(inI)
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{
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let zWhole = Math.floor(inI / 256);
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let zPart = inI % 256;
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let yWhole = Math.floor(zPart / 16);
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let yPart = zPart % 16;
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return [yPart, yWhole, zWhole];
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},
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Update(inRegion)
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{
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inRegion.Filled = [];
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inRegion.Surface = [];
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var i;
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for(i=0; i<inRegion.Voxels.length; i++)
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{
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if(inRegion.Voxels[i])
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{
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let coords = Region.IndexToCoords(i);
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Kernel.Loop(Kernel.Corners, coords, (inX, inY, inZ)=>
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{
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let offsetIndex = Region.CoordsToIndex(inX, inY, inZ);
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if(!inRegion.Voxels[offsetIndex])
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{
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inRegion.Surface.push(i);
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return true;
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}
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});
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}
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}
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console.log("looped over", i);
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}
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};
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