File: X3DNodes.TViewpointNode.html

package info (click to toggle)
castle-game-engine 5.2.0-3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 185,428 kB
  • sloc: pascal: 260,781; cpp: 1,363; objc: 713; makefile: 537; xml: 496; sh: 480; php: 4
file content (196 lines) | stat: -rw-r--r-- 12,491 bytes parent folder | download 
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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<title>Castle Game Engine: X3DNodes: Class TViewpointNode</title>
<meta name="generator" content="PasDoc 0.13.0">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<link rel="StyleSheet" type="text/css" href="pasdoc.css">
</head>
<body>
<table class="container"><tr><td class="navigation">
<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TViewpointNode"></a><h1 class="cio">Class TViewpointNode</h1>
<table class="sections wide_list">
<tr>
<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td>Fields</td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a  href="X3DNodes.html">X3DNodes</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TViewpointNode = class(<a class="normal" href="X3DNodes.TAbstractX3DViewpointNode.html">TAbstractX3DViewpointNode</a>)</code></p>
<h2 class="description">Description</h2>
<div class="nodescription">no description available, TAbstractX3DViewpointNode description follows</div><div class="nodescription">no description available, TAbstractViewpointNode description follows</div><p>
Common ancestor for both VRML 1.0 camera nodes and VRML/X3D &gt;= 2.0 viewpoint nodes.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TPersistent</li>
<li class="ancestor"><a class="normal" href="CastleInterfaces.TNonRefCountedInterfacedPersistent.html">TNonRefCountedInterfacedPersistent</a></li>
<li class="ancestor"><a class="normal" href="X3DFields.TX3DFileItem.html">TX3DFileItem</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TX3DNode.html">TX3DNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractNode.html">TAbstractNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractChildNode.html">TAbstractChildNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractBindableNode.html">TAbstractBindableNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractViewpointNode.html">TAbstractViewpointNode</a></li>
<li class="ancestor"><a class="normal" href="X3DNodes.TAbstractX3DViewpointNode.html">TAbstractX3DViewpointNode</a></li>
<li class="thisitem">TViewpointNode</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a  href="X3DNodes.TViewpointNode.html#CreateNode">CreateNode</a></b>; override;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class function <b><a  href="X3DNodes.TViewpointNode.html#ClassNodeTypeName">ClassNodeTypeName</a></b>: string; override;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class function <b><a  href="X3DNodes.TViewpointNode.html#URNMatching">URNMatching</a></b>(const URN: string): boolean; override;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="X3DNodes.TViewpointNode.html#Position">Position</a></b>: <a  href="X3DFields.TSFVec3f.html">TSFVec3f</a>; override;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class function <b><a  href="X3DNodes.TViewpointNode.html#ProjectionType">ProjectionType</a></b>: <a  href="CastleRays.html#TProjectionType">TProjectionType</a>; override;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="X3DNodes.TViewpointNode.html#AngleOfView">AngleOfView</a></b>(const ThisToOtherSizeRatio: Single): Single;</code></td>
</tr>
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>class function <b><a  href="X3DNodes.TViewpointNode.html#ViewpointAngleOfView">ViewpointAngleOfView</a></b>( FieldOfView: Single; const ThisToOtherSizeRatio: Single): Single;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a  href="X3DNodes.TViewpointNode.html#ProjectionMatrix">ProjectionMatrix</a></b>: <a  href="CastleVectors.html#TMatrix4Single">TMatrix4Single</a>; override;</code></td>
</tr>
</table>
<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
<table class="summary wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="X3DNodes.TViewpointNode.html#FdFieldOfView">FdFieldOfView</a></b>: <a  href="X3DFields.TSFFloat.html">TSFFloat</a> read FFdFieldOfView;</code></td>
</tr>
<tr class="list2">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a  href="X3DNodes.TViewpointNode.html#FdPosition">FdPosition</a></b>: <a  href="X3DFields.TSFVec3f.html">TSFVec3f</a> read FFdPosition;</code></td>
</tr>
</table>
<h2 class="description">Description</h2>
<h3 class="detail">Methods</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="CreateNode"></a><code>procedure <b>CreateNode</b>; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="ClassNodeTypeName"></a><code>class function <b>ClassNodeTypeName</b>: string; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="URNMatching"></a><code>class function <b>URNMatching</b>(const URN: string): boolean; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Position"></a><code>function <b>Position</b>: <a  href="X3DFields.TSFVec3f.html">TSFVec3f</a>; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="ProjectionType"></a><code>class function <b>ProjectionType</b>: <a  href="CastleRays.html#TProjectionType">TProjectionType</a>; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="AngleOfView"></a><code>function <b>AngleOfView</b>(const ThisToOtherSizeRatio: Single): Single;</code></td>
</tr>
<tr><td colspan="2">
<p>
This calculates proper angle of view for typical rectangular display, based on given fieldOfView field value. Result is in radians (just like fieldOfView VRML field).

<p>If you want to calculate horizontal angle of view then pass as ThisToOtherSizeRatio your window's width / height. If you want to calculate vertical angle of view then pass as ThisToOtherSizeRatio your window's height / width. For this method it doesn't really matter which is horizontal and which is vertical, both are treated the same.

<p>This works following VRML spec. So the angle of view for smaller window size is set to fieldOfViee. The other angle can always be calculated by <a class="normal" href="CastleRays.html#AdjustViewAngleRadToAspectRatio">AdjustViewAngleRadToAspectRatio</a> (this implements the same equation that is mentioned in VRML spec). The larger angle cannot be larger than Pi, and may force the smaller angle to be smaller than fieldOfView.</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="ViewpointAngleOfView"></a><code>class function <b>ViewpointAngleOfView</b>( FieldOfView: Single; const ThisToOtherSizeRatio: Single): Single;</code></td>
</tr>
<tr><td colspan="2">
<p>
This is like <a class="normal" href="X3DNodes.TViewpointNode.html#AngleOfView">AngleOfView</a>, but it allows you to specify FieldOfView as a parameter.</p>
</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="ProjectionMatrix"></a><code>function <b>ProjectionMatrix</b>: <a  href="CastleVectors.html#TMatrix4Single">TMatrix4Single</a>; override;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<h3 class="detail">Properties</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="FdFieldOfView"></a><code>property <b>FdFieldOfView</b>: <a  href="X3DFields.TSFFloat.html">TSFFloat</a> read FFdFieldOfView;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a  href="legend.html"><img  src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="FdPosition"></a><code>property <b>FdPosition</b>: <a  href="X3DFields.TSFVec3f.html">TSFVec3f</a> read FFdPosition;</code></td>
</tr>
<tr><td colspan="2">
&nbsp;</td></tr>
</table>
<!-- Piwik -->
<script type="text/javascript">
  var _paq = _paq || [];
  _paq.push(["trackPageView"]);
  _paq.push(["enableLinkTracking"]);

  (function() {
    var u=(("https:" == document.location.protocol) ? "https" : "http") + "://michalis.ii.uni.wroc.pl/piwik-castle-engine/";
    _paq.push(["setTrackerUrl", u+"piwik.php"]);
    _paq.push(["setSiteId", "1"]);
    var d=document, g=d.createElement("script"), s=d.getElementsByTagName("script")[0]; g.type="text/javascript";
    g.defer=true; g.async=true; g.src=u+"piwik.js"; s.parentNode.insertBefore(g,s);
  })();
</script>
<!-- End Piwik Code -->

<noscript>
<!-- Piwik Image Tracker -->
<img src="http://michalis.ii.uni.wroc.pl/piwik-castle-engine/piwik.php?idsite=1&amp;rec=1" style="border:0" alt="" />
<!-- End Piwik -->
</noscript>
<hr noshade size="1"><span class="appinfo"><em>Generated by <a  href="http://pasdoc.sourceforge.net/">PasDoc 0.13.0</a> on 2015-06-15 04:43:15</em>
</span>
</td></tr></table></body></html>