128 lines
4.4 KiB
JavaScript
128 lines
4.4 KiB
JavaScript
class VectorscopeCC {
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static dot = { 'txt': null, 'img': null };
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static updateCursor(r, g, b, mode) {
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const mag = Math.abs(r) + Math.abs(g) + Math.abs(b);
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var condX, condY;
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if (mag < Number.EPSILON) {
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condX = 0.0;
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condY = 0.0;
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} else {
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condX = 25 * Math.sqrt(r * r + g * g + b * b) * (r * -0.5 + g * -0.5 + b * 1.0) / mag;
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condY = 25 * Math.sqrt(r * r + g * g + b * b) * (r * -0.866 + g * 0.866 + b * 0.0) / mag;
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}
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this.dot[mode].style.left = `calc(50% + ${condX - 12}px)`;
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this.dot[mode].style.top = `calc(50% + ${condY - 12}px)`;
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}
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static registerPicker(wheel, sliders, dot) {
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['mousemove', 'click'].forEach((event) => {
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wheel.addEventListener(event, (e) => {
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e.preventDefault();
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if (e.type === 'mousemove' && e.buttons != 1)
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return;
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const rect = e.target.getBoundingClientRect();
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const p_rect = e.target.parentNode.getBoundingClientRect();
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const shift = (p_rect.width - rect.width) / 2.0;
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dot.style.left = `calc(${e.clientX - rect.left}px - 12px + ${shift}px)`;
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dot.style.top = `calc(${e.clientY - rect.top}px - 12px)`;
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const x = ((e.clientX - rect.left) - 100.0) / 25;
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const y = ((e.clientY - rect.top) - 100.0) / 25;
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const zeta = Math.atan(y / x);
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var degree = 0;
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if (x >= 0) {
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if (y >= 0)
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degree = zeta * 180 / Math.PI;
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else
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degree = 360 + zeta * 180 / Math.PI;
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}
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else if (x < 0) {
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degree = 180 + zeta * 180 / Math.PI;
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}
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var r = -(0.00077 * (433 * x * degree + 750 * y * degree) / degree);
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var g = y / 0.866 + r;
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var b = x + 0.5 * r + 0.5 * g;
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const mag = Math.sqrt(r * r + g * g + b * b);
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const len = Math.abs(r) + Math.abs(g) + Math.abs(b);
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r = (r / mag * len).toFixed(2);
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g = (g / mag * len).toFixed(2);
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b = (b / mag * len).toFixed(2);
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sliders[0][0].value = r;
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sliders[0][1].value = r;
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sliders[1][0].value = g;
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sliders[1][1].value = g;
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sliders[2][0].value = b;
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sliders[2][1].value = b;
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});
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});
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['mouseleave', 'mouseup'].forEach((event) => {
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wheel.addEventListener(event, () => {
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updateInput(sliders[0][0]);
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updateInput(sliders[1][0]);
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updateInput(sliders[2][0]);
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});
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});
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}
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}
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onUiLoaded(() => {
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['txt', 'img'].forEach((mode) => {
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const container = document.getElementById(`cc-colorwheel-${mode}`);
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container.style.height = '200px';
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container.style.width = '200px';
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const wheel = container.querySelector('img');
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container.insertBefore(wheel, container.firstChild);
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while (container.firstChild !== container.lastChild)
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container.lastChild.remove();
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wheel.ondragstart = (e) => { e.preventDefault(); return false; };
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wheel.id = `cc-img-${mode}`;
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const sliders = [
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[
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document.getElementById(`cc-r-${mode}`).querySelector('input[type=number]'),
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document.getElementById(`cc-r-${mode}`).querySelector('input[type=range]')
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],
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[
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document.getElementById(`cc-g-${mode}`).querySelector('input[type=number]'),
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document.getElementById(`cc-g-${mode}`).querySelector('input[type=range]')
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],
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[
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document.getElementById(`cc-b-${mode}`).querySelector('input[type=number]'),
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document.getElementById(`cc-b-${mode}`).querySelector('input[type=range]')
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]
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];
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const temp = document.getElementById(`cc-temp-${mode}`);
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const dot = temp.querySelector('img');
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dot.id = `cc-dot-${mode}`;
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dot.style.left = 'calc(50% - 12px)';
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dot.style.top = 'calc(50% - 12px)';
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container.appendChild(dot);
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temp.remove();
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VectorscopeCC.dot[mode] = dot;
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VectorscopeCC.registerPicker(wheel, sliders, dot);
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});
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});
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