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<span style="font-size: 15px;">I am using</span><span style="font-size: 15px;"> vtkCubeAxesActor to draw a 3D axis. </span><br>
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<div>I see three options to draw the titles and labels: vtkAxisFollower, vtkTextActor, or vtkTextActor3D.</div>
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<div>I need (1) the titles and labels to be constantly facing the camera, (2) not overlaid over the data, and (3) to have good quality fonts.</div>
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<div>I’m not sure how to best achieve these things.</div>
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<div>For vktTextActor, the fonts are rendered very nicely. However, since it is a 2D actor, it is always rendered as an overlay.</div>
<div>When the axis is supposed to be behind the data (say, in "FURTHEST_TRIAD" mode), the axis lines and ticks would be rendered behind the data while the titles and label are rendered at front/on top, which looks awkward to me.</div>
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<div>Using vtkAxisFollower can avoid the above issue but the fonts are not rendered as nicely.</div>
<div>Also, the titles and labels stay parallel with the axis but I need them to be constantly facing the camera.</div>
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<div>vtkTextActor3D also stays parallel to the axis, like vtkAxisFollower. </div>
<div>The font quality is better than vtkAxisFollower, but I still prefer that of vtkTextActor.</div>
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<div>I considered creating a subclass of vtkAxisFollower with a different transform matrix (so that it will always be facing the camera).</div>
<div>It also uses a vtkTexture/vtkImageData pair for font rendering (so that the font quality is similar to vtkTextActor). This would achieve the three goals I listed above.</div>
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<div>However: I am not sure how to incorporate this class within vtkCubeAxesActor (or vtkAxisActor).</div>
<div>The vtkAxisFollower is a private member of vtkAxisActor with no set mutator. </div>
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<div>Any suggestions for how to proceed, either with this plan or perhaps a better one I am unaware of?</div>
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<div>Many thanks!</div>
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<div>Mande<br>
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<div style="margin: 0px;"><font face="Calibri,sans-serif" size="2"><span style="font-size: 11pt;">________________________</span></font></div>
<div style="margin: 0px;"><font face="Calibri,sans-serif" size="2"><span style="font-size: 11pt;"><font size="2"><span style="font-size: 10pt;"><strong>Mande Leung | Software Developer</strong></span></font></span></font></div>
<div style="margin: 0px;"><font face="Calibri,sans-serif" size="2"><span style="font-size: 11pt;"><font size="2"><span style="font-size: 10pt;">Lumerical Solutions, Inc.</span></font></span></font></div>
<div style="margin: 0px;"><font face="Calibri,sans-serif" size="2"><span style="font-size: 11pt;"><font size="2"><span style="font-size: 10pt;">300 – 535 Thurlow Street, Vancouver, Canada</span></font></span></font></div>
<div style="margin: 0px;"><font face="Calibri,sans-serif" size="2"><span style="font-size: 11pt;"><font size="2"><span style="font-size: 10pt;">Tel: 1.604.733.9006 Ext. 312</span></font></span></font></div>
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<div style="margin: 0px;"><font face="Calibri,sans-serif" size="2"><span style="font-size: 11pt;"><a href="mailto:myemail@lumerical.com" target="_blank"><font size="2" color="#003399"><span style="font-size: 10pt;">mleung@lumerical.com</span></font></a><font size="2" color="#003399"><span style="font-size: 10pt;"> <span style="font-size: 12pt;"></span></span></font></span></font></div>
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