<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre">H</span>i all,</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000"><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000">This is my first time posting to this list, so I hope someone out there can help me. I have the following code that needs to create a model that I will specify. I am using VTK 5.6.1 under OSX 10.6.5 with Cocoa build and RelWithDebInfo, linked with Qt 4.7, and </span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre">VTK_REQUIRED_OBJCXX_FLAGS:STRING=""</span> to get it to work with Qt.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; ">The issue lies with the SetPoints method, which seems to automatically delete the parameter 'Points'. I stepped through the debugger, and it shows that the method makes points reference count 0 from 1, while the fielddata and cells lines all work as expected. My program crashes on 'points->Delete' everytime, and I'm not sure why?</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre"> </span></span>vtkPolyData<span style="color: #000000">* model = </span>vtkPolyData<span style="color: #000000">::</span><span style="color: #400c80">New</span><span style="color: #000000">();</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span><span style="color: #7131a8">cout</span> << model-><span style="color: #400c80">GetPoints</span>() << endl;</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; min-height: 13px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre"> </span></span>vtkPoints<span style="color: #000000">* points = </span>vtkPoints<span style="color: #000000">::</span><span style="color: #400c80">New</span><span style="color: #000000">();</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span>model-><span style="color: #400c80">SetPoints</span>(points);</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span>points-><span style="color: #400c80">Delete</span>();</div><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; min-height: 13.0px"><span class="Apple-tab-span" style="white-space:pre"> </span><br class="webkit-block-placeholder"></p><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre"> </span></span>vtkFieldData<span style="color: #000000">* fieldData = </span>vtkFieldData<span style="color: #000000">::</span><span style="color: #400c80">New</span><span style="color: #000000">();</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span>model-><span style="color: #400c80">SetFieldData</span>(fieldData);</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span>fieldData-><span style="color: #400c80">Delete</span>();</div><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; min-height: 13.0px"><span class="Apple-tab-span" style="white-space:pre"> </span><br class="webkit-block-placeholder"></p><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; color: rgb(113, 49, 168); "><span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre"> </span></span>vtkCellArray<span style="color: #000000">* cells = </span>vtkCellArray<span style="color: #000000">::</span><span style="color: #400c80">New</span><span style="color: #000000">();</span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span>model-><span style="color: #400c80">SetVerts</span>(cells);</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"> </span>cells-><span style="color: #400c80">Delete</span>();<span class="Apple-tab-span" style="white-space:pre"> </span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre"><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 11px/normal Menlo; "><span class="Apple-tab-span" style="white-space:pre">R</span>agu</div></body></html>