konva
Version:
HTML5 2d canvas library.
43 lines (42 loc) • 1.32 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.RGB = void 0;
const Factory_1 = require("../Factory");
const Node_1 = require("../Node");
const Validators_1 = require("../Validators");
const RGB = function (imageData) {
const data = imageData.data, nPixels = data.length, red = this.red(), green = this.green(), blue = this.blue();
for (let i = 0; i < nPixels; i += 4) {
const brightness = (0.34 * data[i] + 0.5 * data[i + 1] + 0.16 * data[i + 2]) / 255;
data[i] = brightness * red;
data[i + 1] = brightness * green;
data[i + 2] = brightness * blue;
data[i + 3] = data[i + 3];
}
};
exports.RGB = RGB;
Factory_1.Factory.addGetterSetter(Node_1.Node, 'red', 0, function (val) {
this._filterUpToDate = false;
if (val > 255) {
return 255;
}
else if (val < 0) {
return 0;
}
else {
return Math.round(val);
}
});
Factory_1.Factory.addGetterSetter(Node_1.Node, 'green', 0, function (val) {
this._filterUpToDate = false;
if (val > 255) {
return 255;
}
else if (val < 0) {
return 0;
}
else {
return Math.round(val);
}
});
Factory_1.Factory.addGetterSetter(Node_1.Node, 'blue', 0, Validators_1.RGBComponent, Factory_1.Factory.afterSetFilter);