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issue-277 few null checks to avoid crash when node went under bottom of screen

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This commit is contained in:
Daniel Lazar
2019-08-07 08:52:58 +02:00
parent 96655baff2
commit 16033a658c
1 changed files with 10 additions and 2 deletions
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12
packages/react-diagrams-routing/src/engine/PathFinding.ts
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@ -59,14 +59,22 @@ export default class PathFinding {
pathToStart: number[][]; pathToStart: number[][];
pathToEnd: number[][]; pathToEnd: number[][];
} { } {
const startIndex = path.findIndex(point => matrix[point[1]][point[0]] === 0); const startIndex = path.findIndex(point => {
if (matrix[point[1]])
return matrix[point[1]][point[0]] === 0;
else return false;
});
const endIndex = const endIndex =
path.length - path.length -
1 - 1 -
path path
.slice() .slice()
.reverse() .reverse()
.findIndex(point => matrix[point[1]][point[0]] === 0); .findIndex(point => {
if (matrix[point[1]])
return matrix[point[1]][point[0]] === 0;
else return false;
});
// are we trying to create a path exclusively through blocked areas? // are we trying to create a path exclusively through blocked areas?
// if so, let's fallback to the linear routing // if so, let's fallback to the linear routing