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60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
var source;
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var dX, dY, dW, dH, sW, sH;
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function getVal(p, i) {
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if ((p.data[i] == 0x00) && (p.data[i + 1] == 0x00)) return 0;
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if ((p.data[i] == 0xFF) && (p.data[i + 1] == 0xFF)) return 1;
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if ((p.data[i] == 0x7F) && (p.data[i + 1] == 0x7F)) return 2;
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return 3;
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}
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function getVal_7color(p, i) {
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if (
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(p.data[i] == 0x00) && (p.data[i + 1] == 0x00) && (p.data[i + 2] == 0x00)
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) return 0;
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if (
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(p.data[i] == 0xFF) && (p.data[i + 1] == 0xFF) && (p.data[i + 2] == 0xFF)
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) return 1;
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if (
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(p.data[i] == 0x00) && (p.data[i + 1] == 0xFF) && (p.data[i + 2] == 0x00)
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) return 2;
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if (
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(p.data[i] == 0x00) && (p.data[i + 1] == 0x00) && (p.data[i + 2] == 0xFF)
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) return 3;
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if (
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(p.data[i] == 0xFF) && (p.data[i + 1] == 0x00) && (p.data[i + 2] == 0x00)
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) return 4;
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if (
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(p.data[i] == 0xFF) && (p.data[i + 1] == 0xFF) && (p.data[i + 2] == 0x00)
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) return 5;
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if (
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(p.data[i] == 0xFF) && (p.data[i + 1] == 0x80) && (p.data[i + 2] == 0x00)
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) return 6;
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return 7;
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}
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function setVal(p, i, c) {
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p.data[i] = curPal[c][0];
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p.data[i + 1] = curPal[c][1];
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p.data[i + 2] = curPal[c][2];
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p.data[i + 3] = 255;
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}
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function addVal(c, r, g, b, k) {
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return [c[0] + (r * k) / 32, c[1] + (g * k) / 32, c[2] + (b * k) / 32];
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}
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function getErr(r, g, b, stdCol) {
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r -= stdCol[0];
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g -= stdCol[1];
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b -= stdCol[2];
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return r * r + g * g + b * b;
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}
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function getNear(r, g, b) {
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var ind = 0;
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var err = getErr(r, g, b, curPal[0]);
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for (var i = 1; i < curPal.length; i++) {
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var cur = getErr(r, g, b, curPal[i]);
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if (cur < err) {
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err = cur;
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ind = i;
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}
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}
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return ind;
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}
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