1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"><HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
<META NAME="GENERATOR" CONTENT="Adobe FrameMaker 5.5/HTML Export Filter">
<LINK REL="STYLESHEET" HREF="VisualRef.css" CHARSET="ISO-8859-1" TYPE="text/css">
<TITLE> Description of Objects in VPython</TITLE>
</HEAD>
<BODY BGCOLOR="#ffffff">
<DIV CLASS="navigation"><table align="center" width="100%" cellpadding="0" cellspacing="2">
<tr>
<td><A HREF="arrow.html"><img src="icons/previous.gif" border="0" height="32"
alt="Previous Page" width="32"></A></td>
<td><A HREF="index.html"><img src="icons/up.gif" border="0" height="32"
alt="Up One Level" width="32"></A></td>
<td><A HREF="pyramid.html"><img src="icons/next.gif" border="0" height="32"
alt="Next Page" width="32"></A></td>
<td align="center" width="100%">Visual Reference</td>
<td><A HREF="index.html"><img src="icons/contents.gif" border="0" height="32"
alt="Contents" width="32"></A></td>
<td><img src="icons/blank.gif" border="0" height="32"
alt="" width="32"></td>
<td><img src="icons/blank.gif" border="0" height="32"
alt="" width="32"></td>
</tr></table>
<b class="navlabel">Previous:</b> <a class="sectref" HREF="arrow.html">The arrow
Object</A> <b class="navlabel">Up:</b> <a class="sectref" HREF="index.html">Contents</A>
<b class="navlabel">Next:</b> <a class="sectref" HREF="pyramid.html">The pyramid
Object</A> <br>
<hr>
</DIV>
<DIV>
<H1 CLASS="Heading-1"><font color="#0000A0">The cone Object</font></H1>
</DIV>
<DIV>
<P CLASS="Normal"> <IMG SRC="VisualRef-3.gif" ALIGN="RIGHT"> The cone object
has a circular cross section and tapers to a point. The following statement
will display a cone with the center of its circular base at (5,2,0), pointing
parallel to the x axis with length 12; the wide end of the cone has radius
1:</P>
<DIV>
<H2 CLASS="program0">
cone(pos=(5,2,0), axis=(12,0,0), radius=1)</H2>
<P CLASS="Normal"> The cone object has the following attributes and default
values, like those for cylinders: <span class="attribute">pos<font color="#000000">
(0,0,0)</font></span>, <span class="attribute">x</span><span class="attribute"><font color="#000000">
(0)</font></span>, <span class="attribute">y<font color="#000000">(0)</font></span>,
<span class="attribute">z<font color="#000000">(0)</font></span>, <span class="attribute">axis<font color="#000000">
(1,0,0)</font></span>, <span class="attribute">length<font color="#000000">
(1)</font></span>, <span class="attribute">color<font color="#000000"> (1,1,1)
which is color.white</font></span>, <span class="attribute">red<font color="#000000">
(1)</font></span>, <span class="attribute">green<font color="#000000"> (1)</font></span>,
<span class="attribute">blue<font color="#000000"> (1)</font></span>, and
<span class="attribute">up<font color="#000000"> (0,1,0)</font></span>.
As with cylinders, <span class="attribute">up</span> has a subtle effect
on the 3D appearance of a cone. Additional cone attribute:</P>
<P CLASS="attributes"> <span class="attribute">radius</span> Radius of the
wide end of the cone, default = 1</P>
</DIV>
</DIV>
<DIV>
<p CLASS="Heading-1">Note that the <span class="attribute">pos</span> attribute
for cylinder, arrow, cone, and pyramid corresponds to one end of the object,
whereas for a box, sphere, or ring it corresponds to the center of the object.
</p>
<H1 CLASS="Heading-1"> </H1>
<p> </p><H1 CLASS="Heading-1"><br>
</H1>
</DIV>
<hr>
<DIV CLASS="navigation"><table align="center" width="100%" cellpadding="0" cellspacing="2">
<tr>
<td><A HREF="arrow.html"><img src="icons/previous.gif" border="0" height="32"
alt="Previous Page" width="32"></A></td>
<td><A HREF="index.html"><img src="icons/up.gif" border="0" height="32"
alt="Up One Level" width="32"></A></td>
<td><A HREF="pyramid.html"><img src="icons/next.gif" border="0" height="32"
alt="Next Page" width="32"></A></td>
<td align="center" width="100%">Visual Reference</td>
<td><A HREF="index.html"><img src="icons/contents.gif" border="0" height="32"
alt="Contents" width="32"></A></td>
<td><img src="icons/blank.gif" border="0" height="32"
alt="" width="32"></td>
<td><img src="icons/blank.gif" border="0" height="32"
alt="" width="32"></td>
</tr></table>
<b class="navlabel">Previous:</b> <a class="sectref" HREF="arrow.html">The arrow
Object</A> <b class="navlabel">Up:</b> <a class="sectref" HREF="index.html">Contents</A>
<b class="navlabel">Next:</b> <a class="sectref" HREF="pyramid.html">The pyramid
Object</A><br>
<hr>
</DIV>
</BODY>
</HTML>
|
