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author | William 'psyFi' Hatcher <william@hatcher.work> | 2017-08-13 13:32:12 +0200 |
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committer | Tiger Wang <ziwei.tiger@outlook.com> | 2017-08-13 13:32:12 +0200 |
commit | 0cd8482f07aadab6de27aa7395de5408737093ad (patch) | |
tree | f6809d1a12db5ed885a98f260bdf95a21e3c2343 /docs/js/ValueMap.js | |
parent | Replaced includes with forward declarations (diff) | |
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Diffstat (limited to 'docs/js/ValueMap.js')
-rw-r--r-- | docs/js/ValueMap.js | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/docs/js/ValueMap.js b/docs/js/ValueMap.js deleted file mode 100644 index 31ddba27e..000000000 --- a/docs/js/ValueMap.js +++ /dev/null @@ -1,139 +0,0 @@ - -const g_DistanceBetweenSquares = 0;//.01; -const g_Colors = [ - "#0000FF", - "#00FF00", - "#FF0000", - "#FF00FF", - "#00FFFF", - "#FFFF00", - "#000000", - "#9BADFF" -] - -class ValueMap { - constructor() { - this.values = new Uint8Array(4 * 4); - this.sizeX = 4; - this.sizeZ = 4; - this.reset(); - } - - - reset() { - this.sizeX = 4; - this.sizeZ = 4; - this.values = new Uint8Array(this.sizeX * this.sizeZ); - - for (let x = 0; x < this.sizeX; x++) - { - for (let z = 0; z < this.sizeZ; z++) - { - this.values[x + this.sizeZ * z] = Math.floor(Math.random() * 8); - } - } - } - - - chooseRandomNumber() { - let numArguments = arguments.length; - return arguments[Math.floor(Math.random() * arguments.length)]; - } - - - smooth() { - let sizeZ = this.sizeZ - 2; - let sizeX = this.sizeX - 2; - let cache = new Uint8Array((this.sizeX - 2) * (this.sizeZ - 2)); - for (let z = 0; z < sizeZ; z++) - { - for (let x = 0; x < sizeX; x++) - { - let val = this.values[x + 1 + (z + 1) * this.sizeX]; - let above = this.values[x + 1 + z * this.sizeX]; - let below = this.values[x + 1 + (z + 2) * this.sizeX]; - let left = this.values[x + (z + 1) * this.sizeX]; - let right = this.values[x + 2 + (z + 1) * this.sizeX]; - - if ((left == right) && (above == below)) - { - if (Math.random() < 0.5) - { - val = left; - } - else - { - val = below; - } - } - else - { - if (left == right) - { - val = left; - } - if (above == below) - { - val = above; - } - } - cache[x + z * sizeX] = val; - } - } - this.values = cache; - this.sizeX -= 2; - this.sizeZ -= 2; - } - - - zoom() { - let lowStepX = (this.sizeX - 1) * 2; - let lowStepZ = (this.sizeZ - 1) * 2; - let cache = new Uint8Array(lowStepX * lowStepZ); - for (let z = 0; z < this.sizeZ - 1; z++) - { - let idx = (z * 2) * lowStepX; - let PrevZ0 = this.values[z * this.sizeX]; - let PrevZ1 = this.values[(z + 1) * this.sizeX]; - - for (let x = 0; x < this.sizeX - 1; x++) - { - let ValX1Z0 = this.values[x + 1 + z * this.sizeX]; - let ValX1Z1 = this.values[x + 1 + (z + 1) * this.sizeX]; - cache[idx] = PrevZ0; - cache[idx + lowStepX] = this.chooseRandomNumber(PrevZ0, PrevZ1); - cache[idx + 1] = this.chooseRandomNumber(PrevZ0, ValX1Z0); - cache[idx + 1 + lowStepX] = this.chooseRandomNumber(PrevZ0, ValX1Z0, PrevZ1, ValX1Z1); - idx += 2; - PrevZ0 = ValX1Z0; - PrevZ1 = ValX1Z1; - } - } - this.values = cache; - this.sizeX = lowStepX; - this.sizeZ = lowStepZ; - } - - - visualize(context, canvas) { - context.clearRect(0, 0, canvas.width, canvas.height); - const squareSizeX = canvas.width / (this.sizeX - 1) - g_DistanceBetweenSquares; - const squareSizeY = canvas.height / (this.sizeZ - 1) - g_DistanceBetweenSquares; - for (let x = 0; x < this.sizeX - 1; x++) - { - for (let y = 0; y < this.sizeZ - 1; y++) - { - let renderX = canvas.width / (this.sizeX - 1) * x + g_DistanceBetweenSquares; - let renderY = canvas.height / (this.sizeZ - 1) * y + g_DistanceBetweenSquares; - context.fillStyle = g_Colors[this.values[x + y * this.sizeZ]]; - context.fillRect(renderX, renderY, squareSizeX, squareSizeY); - } - } - - context.save(); - context.globalCompositeOperation = 'difference'; - context.fillStyle = 'white'; - context.fillText("Size: " + (this.sizeX - 1) + "x" + (this.sizeZ - 1), 5, 10); - context.restore(); - } -} |