我想优化和减少我的代码,以提高它的性能和正确性。有了下面这两个不同的功能,我可以使用Google Map Marker
成功地在地图上向前和向后移动pathIndex
,在GPS坐标数组上计算[我之前没有包含这部分代码我认为它没有与这个问题相提并论,但如果需要,我可以并将发布它。
这是我的代码:
第一个功能:
function animate() {
if (pathIndex < coord.length && mapAnimationStatus != PLAY_PAUSED) {
googleMapsMarker.setPosition(coord[pathIndex]);
googleMap.panTo(coord[pathIndex]);
pathIndex += 1;
if (pathIndex == coord.length) {
pause();
pathIndex = 0;
mapAnimationStatus = NOT_PLAY;
return;
}
timerHandler = setTimeout("animate(" + pathIndex + ")", 1000);
}
}
第二个功能:
function animateRewind() {
if (pathIndex >= 0 && mapAnimationStatus != PLAY_PAUSED) {
googleMap.panTo(coord[pathIndex]);
googleMapsMarker.setPosition(coord[pathIndex]);
if (pathIndex == 0) {
pause();
mapAnimationStatus = NOT_PLAY;
return;
}
pathIndex -= 1;
timerHandler = setTimeout("animateRewind(" + pathIndex + ")", 1000);
}
}
正如你所看到的那样,这两个函数共享了很多部分代码,并且认为可以用一个代码替换它们,但我无法弄清楚如何执行此操作。
那么,是否可以创建一个function
来管理这两种不同的动画?
答案 0 :(得分:0)
我希望我没有错过任何东西......
function animate(pathIndex, dir) {
var animateDir = (pathIndex < coord.length
&& mapAnimationStatus != PLAY_PAUSED && dir == 'f')
? dir
: (pathIndex >= 0
&& mapAnimationStatus != PLAY_PAUSED && dir == 'r')
? dir : "error";
if (animateDir === "r") { googleMap.panTo(coord[pathIndex]); }
if (animateDir !== 'error') { googleMapsMarker.setPosition(coord[pathIndex]); }
if (animateDir === "f") {
googleMap.panTo(coord[pathIndex]);
pathIndex += 1;
}
if (animateDir !== 'error') {
if (pathIndex == coord.length || pathIndex == 0) {
pause();
pathIndex = animateDir === "f" ? 0 : pathIndex;
mapAnimationStatus = NOT_PLAY;
return;
}
pathIndex = animateDir === "f" ? pathIndex - 1 : pathIndex;
timerHandler = setTimeout("animate(" + pathIndex + "," + animateDir + ")", 1000);
}
}
答案 1 :(得分:-1)
你可以试试这个:
function ConcatenateFunctions() {
if(mapAnimationStatus != PLAY_PAUSED){
googleMap.panTo(coord[pathIndex]);
googleMapsMarker.setPosition(coord[pathIndex]);
if (pathIndex < coord.length) {
pathIndex += 1;
if (pathIndex == coord.length) {
pause();
pathIndex = 0;
mapAnimationStatus = NOT_PLAY;
return;
}
}else if (pathIndex >= 0) {
if (pathIndex == 0) {
pause();
mapAnimationStatus = NOT_PLAY;
return;
}
pathIndex -= 1;
}
timerHandler = setTimeout("ConcatenateFunctions(" + pathIndex + ")", 1000);
}
}
希望它会有所帮助!