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Quicker lookup of circle positions

pull/1301/head
Marco Heiming 2022-01-14 15:19:00 +01:00
parent 3e6fb2755c
commit a5fd98756b
1 changed files with 22 additions and 5 deletions
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27
apps/circlesclock/app.js
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@ -133,16 +133,33 @@ function drawCircle(index) {
}
}
// serves as cache for quicker lookup of circle positions
let circlePositionsCache = [];
/*
* Looks in the following order if a circle with the given type is somewhere visible/configured
* 1. circlePositionsCache
* 2. settings
* 3. defaultCircleTypes
*
* In case 2 and 3 the circlePositionsCache will be updated
*/
function getCirclePosition(type) {
if (circlePositionsCache[type] >= 0) {
return circlePosX[circlePositionsCache[type]];
}
for (let i = 1; i <= 3; i++) {
const setting = settings['circle' + i];
if (setting == type) return circlePosX[i - 1];
if (setting == type) {
circlePositionsCache[type] = i - 1;
return circlePosX[i - 1];
}
}
for (let i = 0; i < defaultCircleTypes.length; i++) {
if (type == defaultCircleTypes[i] && (!settings || settings['circle' + (i + 1)] == undefined)) {
return circlePosX[i];
}
}
if (type == defaultCircleTypes[i] && (!settings || settings['circle' + (i + 1)] == undefined)) {
circlePositionsCache[type] = i;
return circlePosX[i];
}
}
return undefined;
}