@gorpacrate/core-graphics/lib/utils/grid.js

A core library for creating shape-based graphic editors

"use strict";
exports.__esModule = true;
var i = require("icepick");
var editor_events_1 = require("../editor-state/editor-events");
function snapCoordToGrid(size, x) {
    return Math.round(x / size) * size;
}
exports.snapCoordToGrid = snapCoordToGrid;
function snapCoordsIfNeeded(gridState, coords) {
    var on = gridState.on, size = gridState.size;
    if (!on) {
        return coords;
    }
    var x = coords.x, y = coords.y;
    return i.merge(coords, {
        x: snapCoordToGrid(size, x),
        y: snapCoordToGrid(size, y)
    });
}
exports.snapCoordsIfNeeded = snapCoordsIfNeeded;
function snapEditorInputEventCoordsIfNeeded(gridState, ev) {
    if (editor_events_1.isMouseDownEvent(ev) ||
        editor_events_1.isMouseUpEvent(ev) ||
        editor_events_1.isMouseMoveEvent(ev) ||
        editor_events_1.isMouseEnterEvent(ev) ||
        editor_events_1.isMouseLeaveEvent(ev)) {
        var snappedPayload = snapCoordsIfNeeded(gridState, ev.payload);
        return i.assoc(ev, 'payload', snappedPayload);
    }
    return ev;
}
exports.snapEditorInputEventCoordsIfNeeded = snapEditorInputEventCoordsIfNeeded;
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