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model might not be set yet

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So don't try to read its length right away.

Closes #2267
This commit is contained in:
Gina Häußge 2017-12-05 10:54:33 +01:00
parent 900e8a2aaf
commit 743d590d52
1 changed files with 1 additions and 1 deletions
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2
src/octoprint/static/gcodeviewer/js/renderer.js
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@ -69,7 +69,7 @@ GCODE.renderer = (function(){
ctx.clearRect(p1.x,p1.y,p2.x-p1.x,p2.y-p1.y);
drawGrid();
drawBoundingBox();
if(renderOptions['showNextLayer'] && layerNumStore < model.length - 1) {
if (renderOptions['showNextLayer'] && model && model.length && layerNumStore < model.length - 1) {
drawLayer(layerNumStore + 1, 0, GCODE.renderer.getLayerNumSegments(layerNumStore + 1), true);
}
if (renderOptions['showPreviousLayer'] && layerNumStore > 0) {