malwoden/dist/lib/fov/get-ring.js

   

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getRing4 = exports.getRing8 = void 0;
function getRing8(originX, originY, range) {
    if (range === 0)
        return [{ x: originX, y: originY }];
    var ring = [];
    var maxX = originX + range;
    var minX = originX - range;
    var maxY = originY + range;
    var minY = originY - range;
    //Start at the 3 o'clock, (0 degrees), rotate all the way around
    // Top Right Side, no corner
    for (var x = maxX, y = originY; y > minY; y--) {
        ring.push({ x: x, y: y });
    }
    // Top Side, right to left. Include top corners
    for (var x = maxX, y = minY; x >= minX; x--) {
        ring.push({ x: x, y: y });
    }
    // Left side, no corners
    for (var x = minX, y = minY + 1; y < maxY; y++) {
        ring.push({ x: x, y: y });
    }
    // Bottom side, corners
    for (var x = minX, y = maxY; x <= maxX; x++) {
        ring.push({ x: x, y: y });
    }
    // Right side back to to 0 degrees, no corner
    for (var x = maxX, y = maxY - 1; y > originY; y--) {
        ring.push({ x: x, y: y });
    }
    return ring;
}
exports.getRing8 = getRing8;
function getRing4(originX, originY, range) {
    if (range === 0) {
        return [
            {
                x: originX,
                y: originY,
            },
        ];
    }
    var ring = [];
    var maxX = originX + range;
    var minX = originX - range;
    var maxY = originY + range;
    var minY = originY - range;
    // Top right arc
    for (var x = maxX, y = originY; x > originX; x--, y--) {
        ring.push({ x: x, y: y });
    }
    // Top left arc
    for (var x = originX, y = minY; x > minX; x--, y++) {
        ring.push({ x: x, y: y });
    }
    // Bottom left arc
    for (var x = minX, y = originY; x < originX; x++, y++) {
        ring.push({ x: x, y: y });
    }
    // Bottom right arc
    for (var x = originX, y = maxY; x < maxX; x++, y--) {
        ring.push({ x: x, y: y });
    }
    return ring;
}
exports.getRing4 = getRing4;
//# sourceMappingURL=get-ring.js.map