[694] | 1 |
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| 2 | Namespace ActiveBasic
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| 3 | Namespace OpenGL
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| 4 |
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| 5 | '色情報を扱うためのインターフェース
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| 6 | Class GLColor
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| 7 | Public /* property */
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| 8 | Abstract Function A() As Single
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| 9 | Abstract Function B() As Single
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| 10 | Abstract Function G() As Single
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| 11 | Abstract Function R() As Single
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| 12 | Abstract Function GetPtr() As *Single
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| 13 |
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| 14 | Public /* method */
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| 15 | Function Equals(c As GLColor) As Boolean
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| 16 | If (This.R = c.R) and (This.G = c.G) and (This.B = c.B) and (This.A = c.A) Then
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| 17 | Return True
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| 18 | Else
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| 19 | Return False
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| 20 | End If
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| 21 | End Function
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| 22 | Function GetBrightness() As Single
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| 23 | Return Detail.RGBToBrightness(This.R,This.G,This.B)
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| 24 | End Function
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| 25 | Function GetHue() As Single
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| 26 | Return Detail.RGBToHue(This.R,This.G,This.B)
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| 27 | End Function
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| 28 | Function GetSaturation() As Single
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| 29 | Return Detail.RGBToSaturation(This.R,This.G,This.B)
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| 30 | End Function
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| 31 |
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| 32 | Public /* operator */
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| 33 | Function Operator == (c As GLColor) As Boolean
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| 34 | Return Equals(c)
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| 35 | End Function
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| 36 | Function Operator <> (c As GLColor) As Boolean
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| 37 | Return Not Equals(c)
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| 38 | End Function
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| 39 | End Class
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| 40 |
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| 41 | Class Color3
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| 42 | Inherits GLColor
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| 43 | Public /* constractor */
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| 44 | Sub Color3()
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| 45 | color[0]=0.0
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| 46 | color[1]=0.0
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| 47 | color[2]=0.0
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| 48 | color[3]=1.0
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| 49 | End Sub
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| 50 | Sub Color3(red As Single, green As Single, blue As Single)
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| 51 | color[0]=red
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| 52 | color[1]=green
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| 53 | color[2]=blue
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| 54 | color[3]=1.0
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| 55 | End Sub
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| 56 | Sub Color3(c As System.Drawing.Color)
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| 57 | color[0]=c.R
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| 58 | color[1]=c.G
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| 59 | color[2]=c.B
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| 60 | color[3]=1.0
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| 61 | End Sub
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| 62 | Sub Color3(c As Color4)
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| 63 | color[0]=c.R
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| 64 | color[1]=c.G
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| 65 | color[2]=c.B
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| 66 | color[3]=1.0
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| 67 | End Sub
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| 68 |
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| 69 | Public /* property */
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| 70 | Override Function A() As Single
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| 71 | Return color[3]
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| 72 | End Function
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| 73 | Sub B(blue As Single)
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| 74 | color[2]=blue
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| 75 | End Sub
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| 76 | Override Function B() As Single
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| 77 | Return color[2]
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| 78 | End Function
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| 79 | Sub G(green As Single)
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| 80 | color[1]=green
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| 81 | End Sub
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| 82 | Function G() As Single
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| 83 | Return color[1]
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| 84 | End Function
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| 85 | Sub R(red As Single)
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| 86 | color[0]=red
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| 87 | End Sub
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| 88 | Override Function R() As Single
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| 89 | Return color[0]
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| 90 | End Function
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| 91 |
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| 92 | Public /* operator */
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| 93 | Function Operator () As Color4
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| 94 | Return New Color4(This,1.0)
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| 95 | End Function
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| 96 |
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| 97 | Public /* method */
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| 98 | Override Function GetPtr() As *Single
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| 99 | Return color
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| 100 | End Function
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| 101 |
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| 102 | Public /* static method */
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| 103 | Static Function FromCOLORREF(c As COLORREF) As GLColor
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| 104 | Dim r As Byte, g As Byte, b As Byte
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| 105 | r = c As Byte
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| 106 | g = (c>>8) As Byte
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| 107 | b = (c>>16) As Byte
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| 108 | Return New Color3(r/255.0,g/255.0,b/255.0)
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| 109 | End Function
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| 110 | Static Function FromHSB(hue As Single, saturation As Single, brightness As Single) As Color3
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| 111 | Return Detail.HSBToColor3(hue,saturation,brightness)
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| 112 | End Function
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| 113 | Static Function FromHLS(hue As Single, lightness As Single, saturation As Single) As Color3
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| 114 | Return Detail.HLSToColor3(hue, lightness, saturation)
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| 115 | End Function
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| 116 |
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| 117 | Protected
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| 118 | color[3] As Single
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| 119 | End Class
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| 120 |
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| 121 | Class Color4
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| 122 | Inherits GLColor
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| 123 |
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| 124 | Public /* constractor */
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| 125 | Sub Color4()
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| 126 | color[0]=0.0
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| 127 | color[1]=0.0
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| 128 | color[2]=0.0
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| 129 | color[3]=1.0
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| 130 | End Sub
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| 131 | Sub Color4(red As Single, green As Single, blue As Single, alpha As Single)
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| 132 | color[0]=red
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| 133 | color[1]=green
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| 134 | color[2]=blue
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| 135 | color[3]=alpha
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| 136 | End Sub
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| 137 | Sub Color4(c As System.Drawing.Color)
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| 138 | color[0]=c.R
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| 139 | color[1]=c.G
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| 140 | color[2]=c.B
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| 141 | color[3]=c.A
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| 142 | End Sub
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| 143 | Sub Color4(c As Color3, alpha As Single)
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| 144 | color[0]=c.R
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| 145 | color[1]=c.G
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| 146 | color[2]=c.B
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| 147 | color[3]=alpha
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| 148 | End Sub
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| 149 |
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| 150 | Public /* property */
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| 151 | Sub A(alpha As Single)
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| 152 | color[3]=alpha
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| 153 | End Sub
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| 154 | Override Function A() As Single
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| 155 | Return color[3]
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| 156 | End Function
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| 157 | Sub B(blue As Single)
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| 158 | color[2]=blue
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| 159 | End Sub
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| 160 | Override Function B() As Single
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| 161 | Return color[2]
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| 162 | End Function
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| 163 | Sub G(green As Single)
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| 164 | color[1]=green
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| 165 | End Sub
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| 166 | Function G() As Single
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| 167 | Return color[1]
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| 168 | End Function
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| 169 | Sub R(red As Single)
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| 170 | color[0]=red
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| 171 | End Sub
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| 172 | Override Function R() As Single
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| 173 | Return color[0]
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| 174 | End Function
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| 175 |
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| 176 | Function Operator () As Color3
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| 177 | Return New Color3(This)
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| 178 | End Function
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| 179 |
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| 180 | Public /* method */
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| 181 | Override Function GetPtr() As *Single
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| 182 | Return color
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| 183 | End Function
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| 184 |
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| 185 | Public /* static method */
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| 186 | Static Function FromCOLORREF(c As COLORREF) As Color4
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| 187 | Dim r As Byte, g As Byte, b As Byte
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| 188 | r = c As Byte
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| 189 | g = (c>>8) As Byte
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| 190 | b = (c>>16) As Byte
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| 191 | Return New Color4(r/255.0,g/255.0,b/255.0,1.0)
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| 192 | End Function
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| 193 | Static Function FromHSB(hue As Single, saturation As Single, brightness As Single) As Color4
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| 194 | Return Detail.HSBToColor3(hue,saturation,brightness)
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| 195 | End Function
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| 196 | Static Function FromHLS(hue As Single, lightness As Single, saturation As Single) As Color4
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| 197 | Return Detail.HLSToColor3(hue, lightness, saturation)
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| 198 | End Function
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| 199 |
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| 200 | Protected
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| 201 | color[3] As Single
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| 202 | End Class
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| 203 |
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| 204 | Namespace Detail
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| 205 | Function HSBToColor3(hue As Single, saturation As Single, brightness As Single) As Color3
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| 206 | 'cramping
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| 207 | If hue >= 360.0 Then hue = 0.0
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| 208 | If hue < 0.0 Then hue = 0.0
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| 209 | If saturation > 1.0 Then saturation = 1.0
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| 210 | If saturation < 0.0 Then saturation = 0.0
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| 211 | If brightness > 1.0 Then brightness = 1.0
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| 212 | If brightness < 0.0 Then brightness = 0.0
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| 213 |
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| 214 | 'grayscale
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| 215 | If saturation = 0.0 Then
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| 216 | Return New Color3(brightness,brightness,brightness)
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| 217 | End If
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| 218 |
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| 219 | Dim i = Int(hue/60.0) As Long
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| 220 | Dim f = hue/60.0 - i As Single
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| 221 | Dim v = brightness As Single
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| 222 | Dim m = brightness * (1.0 - saturation) As Single
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| 223 | Dim n = brightness * (1.0 - saturation*f) As Single
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| 224 | Dim k = brightness * (1.0 - saturation*(1.0 - f)) As Single
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| 225 |
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| 226 | Dim r As Single, g As Single, b As Single
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| 227 |
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| 228 | Select Case i
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| 229 | Case 0
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| 230 | r = v
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| 231 | g = k
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| 232 | b = m
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| 233 | Case 1
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| 234 | r = n
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| 235 | g = v
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| 236 | b = m
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| 237 | Case 2
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| 238 | r = m
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| 239 | g = v
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| 240 | b = k
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| 241 | Case 3
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| 242 | r = m
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| 243 | g = n
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| 244 | b = v
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| 245 | Case 4
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| 246 | r = k
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| 247 | g = m
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| 248 | b = v
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| 249 | Case 5
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| 250 | r = v
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| 251 | g = m
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| 252 | b = n
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| 253 | End Select
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| 254 | Return New Color3(r,g,b)
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| 255 | End Function
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| 256 |
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| 257 | Function HLSToColor3(hue As Single, lightness As Single, saturation As Single) As Color3
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| 258 | 'cramping
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| 259 | If hue >= 360.0 Then hue = 0.0
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| 260 | If hue < 0.0 Then hue = 0.0
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| 261 | If lightness > 1.0 Then lightness = 1.0
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| 262 | If lightness < 0.0 Then lightness = 0.0
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| 263 | If saturation > 1.0 Then saturation = 1.0
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| 264 | If saturation < 0.0 Then saturation = 0.0
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| 265 |
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| 266 | 'max - min
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| 267 | Dim max As Single
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| 268 | Dim min As Single
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| 269 | If lightness =< 0.5 Then
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| 270 | min = lightness * (1.0 - saturation)
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| 271 | max = 2*lightness - min
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| 272 | Else
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| 273 | max = lightness * (1.0 - saturation) + saturation
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| 274 | min = 2*lightness - max
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| 275 | End If
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| 276 |
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| 277 | 'grayscale
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| 278 | If saturation = 0.0 Then
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| 279 | Return New Color3(lightness,lightness,lightness)
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| 280 | End If
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| 281 |
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| 282 | Dim r As Single, g As Single, b As Single
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| 283 |
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| 284 | 'red
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| 285 | Dim h = hue + 120.0 As Single
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| 286 | If h > 360.0 Then h -= 360.0
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| 287 | If h < 60.0 Then
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| 288 | r = min + (max - min)*h/60.0
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| 289 | ElseIf (h => 60.0) and (h < 180.0) Then
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| 290 | r = max
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| 291 | ElseIf (h => 180.0) and (h < 240.0) Then
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| 292 | r = min + (max - min)*(240.0-h)/60.0
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| 293 | ElseIf h => 240.0 Then
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| 294 | r = min
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| 295 | End If
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| 296 |
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| 297 | 'green
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| 298 | h = hue
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| 299 | If h < 60.0 Then
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| 300 | g = min + (max - min)*h/60.0
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| 301 | ElseIf (h => 60.0) and (h < 180.0) Then
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| 302 | g = max
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| 303 | ElseIf (h => 180.0) and (h < 240.0) Then
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| 304 | g = min + (max - min)*(240.0-h)/60.0
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| 305 | ElseIf h => 240.0 Then
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| 306 | g = min
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| 307 | End If
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| 308 |
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| 309 |
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| 310 | 'blue
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| 311 | h = hue - 120.0 As Single
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| 312 | If h < 0.0 Then h += 360.0
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| 313 |
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| 314 | If h < 60.0 Then
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| 315 | b = min + (max - min)*h/60.0
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| 316 | ElseIf (h => 60.0) and (h < 180.0) Then
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| 317 | b = max
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| 318 | ElseIf (h => 180.0) and (h < 240.0) Then
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| 319 | b = min + (max - min)*(240.0-h)/60.0
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| 320 | ElseIf h => 240.0 Then
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| 321 | b = min
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| 322 | End If
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| 323 |
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| 324 | Return New Color3(r,g,b)
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| 325 | End Function
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| 326 |
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| 327 | Function RGBToHue(red As Single, green As Single, blue As Single) As Single
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| 328 | Dim max As Single, min As Single, d As Single
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| 329 | max = System.Math.Max(System.Math.Max(red, green), blue)
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| 330 | min = System.Math.Min(System.Math.Min(red, green), blue)
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| 331 | d = max - min
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| 332 | If green = max Then
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| 333 | Return ((blue - red) / d * 60.0 + 120.0) As Single
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| 334 | ElseIf blue = max Then
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| 335 | Return ((red - green) / d * 60 + 240) As Single
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| 336 | ElseIf green < blue Then
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| 337 | Return ((green - blue) / d * 60 + 360) As Single
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| 338 | Else
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| 339 | Return ((green - blue) / d * 60) As Single
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| 340 | EndIf
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| 341 | End Function
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| 342 |
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| 343 | Function RGBToSaturation(red As Single, green As Single, blue As Single) As Single
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| 344 | Dim max = System.Math.Max(System.Math.Max(red, green), blue) As Single
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| 345 | Dim min = System.Math.Min(System.Math.Min(red, green), blue) As Single
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| 346 | Return (max - min) / max
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| 347 | End Function
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| 348 |
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| 349 | Function RGBToBrightness(red As Single, green As Single, blue As Single) As Single
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| 350 | Dim max = System.Math.Max(System.Math.Max(red, green), blue)
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| 351 | Return max
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| 352 | End Function
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| 353 | End Namespace
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| 354 | End Namespace
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| 355 | End Namespace
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