@thingjs/xplugin-cli
Version:
UINO ThingJS-X 零代码平台插件二次开发脚手架,用于生成插件模板开发代码
62 lines (54 loc) • 2.02 kB
JavaScript
/**
* 摄像机 target: 目标点位置
* 摄像机 position: 镜头位置（眼睛位置）
* 摄像机 distance: 摄像机镜头和观察点的距离
* */
export default (fromEarth) => {
if (fromEarth) {
return THING.App.current.camera.getCameInfo().heading;
}
let target = THING.App.current.camera.target;
let position = THING.App.current.camera.position;
//镜头位置保持与目标点在同一水平面
let position1 = [position[0], target[1], position[2]];
//计算方向
let east_west = null;
let north_south = null;
if (target[0] > position1[0]) {
east_west = 1; // 东
} else if (target[0] < position1[0]) {
east_west = -1; // 西
} else {
east_west = 0; // 中
}
if (target[2] > position1[2]) {
north_south = -1; // 南
} else if (target[2] < position1[2]) {
north_south = 1; // 北
} else {
north_south = 0; // 中
}
//摄像机镜头和观察点的距离
const distance = THING.Math.getDistance(target, position1);
if (east_west === 1 && north_south === 1) { //看向东北
return -parseInt(
Math.acos(Math.abs(target[2] - position1[2]) / distance) *
(180 / Math.PI)
);
} else if (east_west === 1 && north_south === -1) { //看向东南
return -parseInt(
Math.acos(Math.abs(target[0] - position1[0]) / distance) *
(180 / Math.PI)
) - 90;
} else if (east_west === -1 && north_south === -1) { //看向西南
return 90 + parseInt(
Math.acos(Math.abs(target[0] - position1[0]) / distance) *
(180 / Math.PI)
);
} else if (east_west === -1 && north_south === 1) { //看向西北
return parseInt(
Math.acos(Math.abs(position1[2] - target[2]) / distance) *
(180 / Math.PI)
);
}
}