Enum BlendMode
- java.lang.Object
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- java.lang.Enum<BlendMode>
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- ej.microvg.BlendMode
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- All Implemented Interfaces:
Serializable,Comparable<BlendMode>
public enum BlendMode extends Enum<BlendMode>
Enum for the ways a path is blend.
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Enum Constant Summary
Enum Constants Enum Constant Description DST_INKeeps the destination pixels that cover source pixels, discards the remaining source and destination pixels.DST_OUTKeeps the destination pixels that are not covered by source pixels.DST_OVERThe source pixels are drawn behind the destination pixels.MULTIPLYMultiplies the source and destination pixels.PLUSAdds the source pixels to the destination pixels and saturates the result.SCREENAdds the source and destination pixels, then subtracts the source pixels multiplied by the destination.SRCThe source pixels replace the destination pixels.SRC_INKeeps the source pixels that cover the destination pixels, discards the remaining source and destination pixels.SRC_OVERThe source pixels are drawn over the destination pixels.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static BlendModevalueOf(String name)Returns the enum constant of this type with the specified name.static BlendMode[]values()Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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SRC
public static final BlendMode SRC
The source pixels replace the destination pixels.\(\alpha_{out} = \alpha_{src}\)
\(C_{out} = C_{src}\)
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SRC_OVER
public static final BlendMode SRC_OVER
The source pixels are drawn over the destination pixels.\(\alpha_{out} = \alpha_{src} + (1 - \alpha_{src}) * \alpha_{dst}\)
\(C_{out} = C_{src} + (1 - \alpha_{src}) * C_{dst}\)
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DST_OVER
public static final BlendMode DST_OVER
The source pixels are drawn behind the destination pixels.\(\alpha_{out} = \alpha_{dst} + (1 - \alpha_{dst}) * \alpha_{src}\)
\(C_{out} = C_{dst} + (1 - \alpha_{dst}) * C_{src}\)
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SRC_IN
public static final BlendMode SRC_IN
Keeps the source pixels that cover the destination pixels, discards the remaining source and destination pixels.\(\alpha_{out} = \alpha_{src} * \alpha_{dst}\)
\(C_{out} = C_{src} * \alpha_{dst}\)
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DST_IN
public static final BlendMode DST_IN
Keeps the destination pixels that cover source pixels, discards the remaining source and destination pixels.\(\alpha_{out} = \alpha_{src} * \alpha_{dst}\)
\(C_{out} = C_{dst} * \alpha_{src}\)
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DST_OUT
public static final BlendMode DST_OUT
Keeps the destination pixels that are not covered by source pixels. Discards destination pixels that are covered by source pixels. Discards all source pixels.\(\alpha_{out} = (1 - \alpha_{src}) * \alpha_{dst}\)
\(C_{out} = (1 - \alpha_{src}) * C_{dst}\)
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PLUS
public static final BlendMode PLUS
Adds the source pixels to the destination pixels and saturates the result.\(\alpha_{out} = max(0, min(\alpha_{src} + \alpha_{dst}, 1))\)
\(C_{out} = max(0, min(C_{src} + C_{dst}, 1))\)
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SCREEN
public static final BlendMode SCREEN
Adds the source and destination pixels, then subtracts the source pixels multiplied by the destination.\(\alpha_{out} = \alpha_{src} + \alpha_{dst} - \alpha_{src} * \alpha_{dst}\)
\(C_{out} = C_{src} + C_{dst} - C_{src} * C_{dst}\)
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MULTIPLY
public static final BlendMode MULTIPLY
Multiplies the source and destination pixels.\(\alpha_{out} = \alpha_{src} + \alpha_{dst} - \alpha_{src} * \alpha_{dst}\)
\(C_{out} = C_{src} * (1 - \alpha_{dst}) + C_{dst} * (1 - \alpha_{src}) + (C_{src} * C_{dst})\)
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Method Detail
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values
public static BlendMode[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (BlendMode c : BlendMode.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static BlendMode valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException- if this enum type has no constant with the specified nameNullPointerException- if the argument is null
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