2 * Copyright (c) 2007-2010 SlimDX Group
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4 * Permission is hereby granted, free of charge, to any person obtaining a copy
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5 * of this software and associated documentation files (the "Software"), to deal
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6 * in the Software without restriction, including without limitation the rights
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7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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8 * copies of the Software, and to permit persons to whom the Software is
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9 * furnished to do so, subject to the following conditions:
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11 * The above copyright notice and this permission notice shall be included in
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12 * all copies or substantial portions of the Software.
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14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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24 #include "../math/Color4.h"
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25 #include "../math/Vector3.h"
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33 /// <summary>Defines a set of lighting properties.</summary>
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34 /// <unmanaged>D3DLIGHT9</unmanaged>
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35 [System::Runtime::InteropServices::StructLayout( System::Runtime::InteropServices::LayoutKind::Sequential )]
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36 public value class Light : System::IEquatable<Light>
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40 /// Gets or sets the type of the light source.
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42 property LightType Type;
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45 /// Gets or sets the diffuse color of the light.
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47 property Color4 Diffuse;
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50 /// Gets or sets the specular color of the light.
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52 property Color4 Specular;
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55 /// Gets or sets the ambient color of the light.
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57 property Color4 Ambient;
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60 /// Gets or sets the position of the light in world space. This member does not affect directional lights.
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62 property Vector3 Position;
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65 /// Gets or sets the direction of the light. This vector need not be normalized, but should have a non-zero length.
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67 property Vector3 Direction;
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70 /// Gets or sets the distance beyond which the light has no effect. This member does not affect directional lights.
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72 property float Range;
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75 /// Gets or sets the decrease in illumination between a spotlight's inner cone and the outer edge of the outer cone.
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77 property float Falloff;
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80 /// Gets or sets the first value in the equation that determines how the light intensity changes over distance.
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82 property float Attenuation0;
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85 /// Gets or sets the second value in the equation that determines how the light intensity changes over distance.
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87 property float Attenuation1;
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90 /// Gets or sets the third value in the equation that determines how the light intensity changes over distance.
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92 property float Attenuation2;
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95 /// Gets or sets angle, in radians, of the spotlight's inner cone.
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97 property float Theta;
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100 /// Gets or sets the angle, in radians, of the spotlight's outer cone.
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102 property float Phi;
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105 /// Tests for equality between two objects.
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107 /// <param name="left">The first value to compare.</param>
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108 /// <param name="right">The second value to compare.</param>
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109 /// <returns><c>true</c> if <paramref name="left"/> has the same value as <paramref name="right"/>; otherwise, <c>false</c>.</returns>
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110 static bool operator == ( Light left, Light right );
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113 /// Tests for inequality between two objects.
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115 /// <param name="left">The first value to compare.</param>
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116 /// <param name="right">The second value to compare.</param>
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117 /// <returns><c>true</c> if <paramref name="left"/> has a different value than <paramref name="right"/>; otherwise, <c>false</c>.</returns>
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118 static bool operator != ( Light left, Light right );
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121 /// Returns the hash code for this instance.
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123 /// <returns>A 32-bit signed integer hash code.</returns>
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124 virtual int GetHashCode() override;
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127 /// Returns a value that indicates whether the current instance is equal to a specified object.
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129 /// <param name="obj">Object to make the comparison with.</param>
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130 /// <returns><c>true</c> if the current instance is equal to the specified object; <c>false</c> otherwise.</returns>
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131 virtual bool Equals( System::Object^ obj ) override;
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134 /// Returns a value that indicates whether the current instance is equal to the specified object.
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136 /// <param name="other">Object to make the comparison with.</param>
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137 /// <returns><c>true</c> if the current instance is equal to the specified object; <c>false</c> otherwise.</returns>
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138 virtual bool Equals( Light other );
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141 /// Determines whether the specified object instances are considered equal.
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143 /// <param name="value1">The first value to compare.</param>
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144 /// <param name="value2">The second value to compare.</param>
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145 /// <returns><c>true</c> if <paramref name="value1"/> is the same instance as <paramref name="value2"/> or
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146 /// if both are <c>null</c> references or if <c>value1.Equals(value2)</c> returns <c>true</c>; otherwise, <c>false</c>.</returns>
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147 static bool Equals( Light% value1, Light% value2 );
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