From f2d1fbefa1e0fbb0959158abdf35d77a267bf031 Mon Sep 17 00:00:00 2001
From: Christophe Geuzaine <cgeuzaine@ulg.ac.be>
Date: Thu, 3 Dec 2015 15:46:08 +0000
Subject: [PATCH] avoid overflow (vertex array stored as floats) - fixes #270
---
Graphics/drawPost.cpp | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/Graphics/drawPost.cpp b/Graphics/drawPost.cpp
index cc21bc1adb..73941500a7 100644
--- a/Graphics/drawPost.cpp
+++ b/Graphics/drawPost.cpp
@@ -145,7 +145,8 @@ static void drawVectorArray(drawContext *ctx, PView *p, VertexArray *va)
float *s = va->getVertexArray(3 * i);
float *v = va->getVertexArray(3 * (i + 1));
glColor4ubv((GLubyte *)va->getColorArray(4 * i));
- double l = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
+ double vv[3] = {v[0], v[1], v[2]};
+ double l = sqrt(vv[0] * vv[0] + vv[1] * vv[1] + vv[2] * vv[2]);
double lmax = opt->tmpMax;
if((l || opt->vectorType == 6) && lmax){
double scale = (opt->arrowSizeMax - opt->arrowSizeMin) / lmax;
@@ -408,7 +409,7 @@ class drawPView {
// use adaptive data if available
PViewData *data = p->getData(true);
PViewOptions *opt = p->getOptions();
-
+
if(data->getDirty() || !data->getNumTimeSteps()) return;
if(!opt->visible || opt->type != PViewOptions::Plot3D) return;
if(!_ctx->isVisible(p)) return;
--
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