From 51b3e8e7ef5af9ff6c40027daa3a04c58b6a4bd2 Mon Sep 17 00:00:00 2001 From: Alan Alpert Date: Tue, 1 May 2012 16:57:05 +1000 Subject: [PATCH] Do not try to apply autoRotation when the particle has no velocity Task-number: QTBUG-25025 Change-Id: Ibc1340d6ea0e36a8bf412f4da704ef8cd3447294 Reviewed-by: Glenn Watson --- src/particles/qquickimageparticle.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/particles/qquickimageparticle.cpp b/src/particles/qquickimageparticle.cpp index 268dfeb..d20862a 100644 --- a/src/particles/qquickimageparticle.cpp +++ b/src/particles/qquickimageparticle.cpp @@ -158,7 +158,8 @@ static const char vertexShaderCode[] = " highp float rotation = vRotation.x + vRotation.y * t * vData.y;\n" " if (vRotation.z == 1.0){\n" " highp vec2 curVel = vVec.zw * t * vData.y + vVec.xy;\n" - " rotation += atan(curVel.y, curVel.x);\n" + " if (length(curVel) > 0.)\n" + " rotation += atan(curVel.y, curVel.x);\n" " }\n" " highp vec2 trigCalcs = vec2(cos(rotation), sin(rotation));\n" " highp vec4 deform = vDeformVec * currentSize * (vPosTex.zzww - 0.5);\n" -- 2.7.4