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16    <h1>Lookup Tables</h1>
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18    <p>A lookup table is used for lighting calculations by setting the correspondence between input values and output values ahead of time.</p>
19    <p class="warning">When using lookup tables, you must create a lookup table set and set the corresponding layer configuration.</p>
20    <p>For details on lookup tables, click <a href="../../../../../tool_panel/lookuptable_set/index.html">Here</a>.</p>
21    <p>For details on layer configurations, click <a href="../../../../../../user_guide/material/lighting/layer_configuration/index.html">here</a>.</p>
22    <h2>Lookup Table Settings and Features</h2>
23    <p>This page describes lookup table settings and features.</p>
24    <img class="manual_image" src="assets/lookuptable.png" alt="Lookup tables"/>
25    <ol class="manual_image">
26      <li>
27        <p><a href="#lookuptable_set">Lookup table set</a></p>
28        <p class="manual_image">Select the lookup table to be used from the pull-down menu.</p>
29      </li>
30      <li>
31        <p><a href="#element">Comp.</a></p>
32        <p class="manual_image">Represents the lighting component the lookup table is being created for.</p>
33      </li>
34      <li>
35        <p><a href="#lookuptableset">Lookup tables</a></p>
36        <p class="manual_image">Select a lookup table registered in the lookup table set and assign it to a component.</p>
37      </li>
38      <li>
39        <p><a href="#input_corner">Input angle</a></p>
40        <p class="manual_image">Represents input values for the lookup table. <br /> Because the input value is used for the value between vectors, it used as the input angle.</p>
41      </li>
42      <li>
43        <p>Scale</p>
44        <p class="manual_image">Sets the scale value to multiply the input angle by. <br /> The effect on the angle can be used to do things like make images brighter depending on the setting.</p>
45      </li>
46    </ol>
47    <a name="lookuptable_set" id="lookuptable_set"></a>
48    <h3>Lookup table set</h3>
49    <p>Select the lookup table to be used from the pull-down menu.</p>
50    <img class="manual_image" src="assets/lookup_tableset.png" alt="Lookup tables"/>
51    <p>Select <B>Don't use</B> if you are not using a lookup table set.</p>
52    <a name="element" id="element"></a>
53    <h3>Comp.</h3>
54    <p>CreativeStudio can create the following lookup tables.</p>
55    <table>
56      <thead>
57        <tr>
58          <th>Comp.</th>
59          <th>Name</th>
60          <th>Description</th>
61        </tr>
62      </thead>
63      <tbody>
64        <tr>
65          <th>Reflection (R)</th>
66          <td>ReflectanceR</td>
67          <td>Represents the reflectivity of R in RGB. <br /> This replaces light intensity with a color.</td>
68        </tr>
69        <tr>
70          <th>Reflection (G)</th>
71          <td>ReflectanceG</td>
72          <td>Represents the reflectivity of G in RGB. <br /> This replaces light intensity with a color.</td>
73        </tr>
74        <tr>
75          <th>Reflection (B)</th>
76          <td>ReflectanceB</td>
77          <td>Represents the reflectivity of B in RGB. <br/> This replaces light intensity with a color.</td>
78        </tr>
79        <tr>
80          <th>Distribution 0</th>
81          <td>Distribution0</td>
82          <td>Sets the light intensity distribution of a material by affecting its Specular 0. <br /> If both Distribution 0 and Distribution 1 are set, the two curves are added.</td>
83        </tr>
84        <tr>
85          <th>Distribution 1</th>
86          <td>Distribution1</td>
87          <td>Sets the light intensity distribution of a material by affecting its Specular 1. <br /> If both Distribution 0 and Distribution 1 are set, the two curves are added.</td>
88        </tr>
89        <tr>
90          <th>Fresnel</th>
91          <td>Fresnelreflection</td>
92          <td>Use this setting to control transparency. <br /> This replaces light intensity with transparency.</td>
93        </tr>
94      </tbody>
95    </table>
96    <a name="lookuptableset" id="lookuptableset"></a>
97    <h3>Lookup tables</h3>
98    <p>Lookup tables registered in the lookup table set are displayed in a pull-down menu. Select a lookup table and assign it to a component.</p>
99    <p class="hint">Settings in the lookup table will be applied to the component.</p>
100    <img class="manual_image" src="assets/lookupset.png" alt="Set a lookup table for each component"/>
101    <p>Select <B>Don't use</B> if you are not using a lookup table.</p>
102    <p class="warning">Lookup tables can be edited using CurveEditor.</p>
103    <a name="input_corner" id="input_corner"></a>
104    <h3>Input angle</h3>
105    <p>The input values used in lookup tables are called input angles because angles are used. </p>
106    <p>The following input angles are available under CreativeStudio.</p>
107    <p>For details on the types of input angle, click </a>here<a href="../../../../../../user_guide/material/lookup_tables/index.html#input_angle">.</p>
108    <table>
109      <thead>
110        <tr>
111          <th>Input angle</th>
112          <th>Description of Components</th>
113        </tr>
114      </thead>
115      <tbody>
116        <tr>
117          <th>NH</th>
118          <td>The angle formed by N (the normal vector) and H (the half vector).</td>
119        </tr>
120        <tr>
121          <th>VH</th>
122          <td>The angle formed by V (the view vector) and H (the half vector).</td>
123        </tr>
124        <tr>
125          <th>NV</th>
126          <td>The angle formed by N (the normal vector) and V (the view vector).</td>
127        </tr>
128        <tr>
129          <th>LN</th>
130          <td>The angle formed by L (the light vector) and N (the normal vector).</td>
131        </tr>
132        <tr>
133          <th>SP</th>
134          <td>The angle formed by the light vector and spotlight.</td>
135        </tr>
136        <tr>
137          <th>CP</th>
138          <td>The angle formed by the projection of the half vector onto the tangent plane and the tangent vector.</td>
139        </tr>
140      </tbody>
141    </table>
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