Face Dimensions

riteshrpatil

I am having problems getting the length and breadth of a rectangular face in SketchUp. I am using this code:` def height
fheight = 0
bb = self.bounds

	if bb.depth != 0
		fheight = bb.depth
	else
		fheight = bb.height
	end
	
	return fheight.to_m
end

	# Method to return the width of a face in m
def width
	fwidth = 0
	bb = self.bounds

	if bb.depth != 0
		fwidth = Math.sqrt((bb.width)**2 + (bb.height)**2)
	else
		fwidth = bb.width
	end
	
	return fwidth.to_m
end`

But I am not getting the correct dimensions of the red rectangular face in attached screenshots.

thomthom

You're using bounds to get dimensions - BoundingBox objects are always aligned the the world axis. What you want to do is investigate the faces edges and their lengths. Sketchup::Edge got a length method that returns the dimension for the edge.

btw

@unknownuser said:

<span class="syntaxdefault"><br /></span><span class="syntaxcomment">#&nbsp;Method&nbsp;to&nbsp;return&nbsp;the&nbsp;width&nbsp;of&nbsp;a&nbsp;face&nbsp;in&nbsp;m<br /></span><span class="syntaxdefault">def&nbsp;width<br />&nbsp;&nbsp;fwidth&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">0<br />&nbsp;&nbsp;bb&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">self</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">bounds<br /></span>

You're extending the base Sketchup::Face class? If you do, beware that if you public the plugin you might run into naming conflict if some other plugin use the same name. Using the base classes has the same risks of naming conflict as making methods in the global namespace.

honoluludesktop

Same component, different bbox. The bbox is subject to the world axis at the time the component is created.

thomthom

<span class="syntaxdefault"><br /></span><span class="syntaxcomment">#&nbsp;Returns&nbsp;nil&nbsp;if&nbsp;the&nbsp;face&nbsp;is&nbsp;not&nbsp;a&nbsp;parallelogram.<br />#&nbsp;Returns&nbsp;an&nbsp;array&nbsp;[width,&nbsp;height]&nbsp;on&nbsp;success.<br /></span><span class="syntaxdefault">def&nbsp;self</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">get_rectangle_size</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">)<br />&nbsp;&nbsp;</span><span class="syntaxdefault">edges&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">outer_loop</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">edges<br />&nbsp;&nbsp;</span><span class="syntaxkeyword">return&nbsp;</span><span class="syntaxdefault">nil&nbsp;unless&nbsp;edges</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">size&nbsp;</span><span class="syntaxkeyword">==&nbsp;</span><span class="syntaxdefault">4<br />&nbsp;&nbsp;</span><span class="syntaxkeyword">return&nbsp;</span><span class="syntaxdefault">nil&nbsp;unless&nbsp;edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">length&nbsp;</span><span class="syntaxkeyword">==&nbsp;</span><span class="syntaxdefault">edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">2</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">length<br />&nbsp;&nbsp;</span><span class="syntaxkeyword">return&nbsp;</span><span class="syntaxdefault">nil&nbsp;unless&nbsp;edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">1</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">length&nbsp;</span><span class="syntaxkeyword">==&nbsp;</span><span class="syntaxdefault">edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">3</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">length<br />&nbsp;&nbsp;</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">length</span><span class="syntaxkeyword">,&nbsp;</span><span class="syntaxdefault">edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">1</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">length</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">end<br /></span>

Untested - but I think it should work.

thomthom

As requested per PM:

<span class="syntaxdefault"><br /></span><span class="syntaxcomment">#&nbsp;Returns&nbsp;nil&nbsp;if&nbsp;the&nbsp;face&nbsp;is&nbsp;not&nbsp;a&nbsp;circle.<br />#&nbsp;Returns&nbsp;the&nbsp;radius&nbsp;on&nbsp;success.<br /></span><span class="syntaxdefault">def&nbsp;self</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">get_circle_radius</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">)<br />&nbsp;&nbsp;</span><span class="syntaxdefault">edges&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">outer_loop</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">edges<br />&nbsp;&nbsp;edge&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">edges</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">]<br />&nbsp;&nbsp;return&nbsp;</span><span class="syntaxdefault">nil&nbsp;unless&nbsp;edge</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">curve</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">is_a</span><span class="syntaxkeyword">?(&nbsp;</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">ArcCurve&nbsp;</span><span class="syntaxkeyword">)<br />&nbsp;&nbsp;</span><span class="syntaxdefault">edge</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">curve</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">radius<br />end<br /></span>

<span class="syntaxdefault"><br /></span><span class="syntaxcomment">#&nbsp;Returns&nbsp;nil&nbsp;if&nbsp;the&nbsp;face&nbsp;is&nbsp;not&nbsp;a&nbsp;semi&nbsp;circle.<br />#&nbsp;(ArcCurve&nbsp;and&nbsp;one&nbsp;edge&nbsp;connecting&nbsp;each&nbsp;curve&nbsp;end)<br />#&nbsp;Returns&nbsp;the&nbsp;radius&nbsp;on&nbsp;success.<br /></span><span class="syntaxdefault">def&nbsp;self</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">get_semicircle_radius</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">)<br />&nbsp;&nbsp;</span><span class="syntaxdefault">edges&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">outer_loop</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">edges<br />&nbsp;&nbsp;curve_edges&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">edges</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">select&nbsp;</span><span class="syntaxkeyword">{&nbsp;|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">|&nbsp;</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">curve</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">is_a</span><span class="syntaxkeyword">?(&nbsp;</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">ArcCurve&nbsp;</span><span class="syntaxkeyword">)&nbsp;}<br />&nbsp;&nbsp;</span><span class="syntaxdefault">curve&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">curve_edges</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">first</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">curve<br />&nbsp;&nbsp;</span><span class="syntaxkeyword">return&nbsp;</span><span class="syntaxdefault">nil&nbsp;unless&nbsp;curve_edges</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">all</span><span class="syntaxkeyword">?&nbsp;{&nbsp;|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">|&nbsp;</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">curve&nbsp;</span><span class="syntaxkeyword">==&nbsp;</span><span class="syntaxdefault">curve&nbsp;</span><span class="syntaxkeyword">}<br />&nbsp;&nbsp;</span><span class="syntaxdefault">edge&nbsp;</span><span class="syntaxkeyword">=&nbsp;(</span><span class="syntaxdefault">edges&nbsp;</span><span class="syntaxkeyword">-&nbsp;</span><span class="syntaxdefault">curve_edges</span><span class="syntaxkeyword">).</span><span class="syntaxdefault">first<br />&nbsp;&nbsp;</span><span class="syntaxcomment">#&nbsp;At&nbsp;this&nbsp;point&nbsp;you&nbsp;have&nbsp;all&nbsp;the&nbsp;data;<br />&nbsp;&nbsp;#&nbsp;curve&nbsp;refers&nbsp;to&nbsp;the&nbsp;ArcCurve&nbsp;of&nbsp;the&nbsp;semicircle<br />&nbsp;&nbsp;#&nbsp;edge&nbsp;refers&nbsp;to&nbsp;the&nbsp;Edge&nbsp;connecting&nbsp;the&nbsp;ArcCurve's&nbsp;ends<br /></span><span class="syntaxdefault">end<br /></span>