**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
/* === M A C R O S ========================================================= */
+#define use_colorspace_gamma() App::use_colorspace_gamma
+#define colorspace_gamma() (2.2f)
+#define gamma_in(x) ((x>=0) ? pow((float)x,1.0f/colorspace_gamma()) : -pow((float)-x,1.0f/colorspace_gamma()))
+#define gamma_out(x) ((x>=0) ? pow((float)x, colorspace_gamma()) : -pow((float)-x, colorspace_gamma()))
+
#ifdef WIN32
#include <float.h>
#ifndef isnan
private:
value_type a_, r_, g_, b_;
- static String hex_;
public:
+ const String get_string(void)const;
+
Color &
operator+=(const Color &rhs)
{
}
public:
- Color() /*:r_(0), g_(0), b_(0), a_(0)*/ { }
+ // ETL/trunk/ETL/_gaussian.h does:
+ // SR1=SR2=SR3=typename T::value_type();
+ // and expects that to give it initialized colors
+ // Otherwise the 'gaussian' blur type is random.
+ Color() :a_(0), r_(0), g_(0), b_(0) { }
Color(const value_type &f) :a_(f),r_(f), g_(f), b_(f) { }
Color(int f) :a_(f),r_(f), g_(f), b_(f) { }
static const String real2hex(ColorReal c);
//! Returns the color as a 6 character hex sting
- const String& get_hex()const { return hex_ = real2hex(r_)+real2hex(g_)+real2hex(b_); }
+ const String get_hex()const { return String(real2hex(r_)+real2hex(g_)+real2hex(b_)); }
//! Sets the color's R, G, and B from a 3 or 6 character hex string
void set_hex(String& hex);
//! \writeme
enum BlendMethod
{
- BLEND_COMPOSITE=0, //!< Color A is composited onto B (Taking into about A's alpha)
- BLEND_STRAIGHT=1, //!< Straight linear interpolation from A->B (Alpha ignored)
- BLEND_BRIGHTEN=2, //!< If composite is brighter than B, use composite. B otherwise.
- BLEND_DARKEN=3, //!< If composite is brighter than B, use composite. B otherwise.
- BLEND_ADD=4, //!< Simple A+B.
- BLEND_SUBTRACT=5, //!< Simple A-B.
- BLEND_MULTIPLY=6, //!< Simple A*B.
- BLEND_DIVIDE=7, //!< Simple B/A
- BLEND_COLOR=8, //!< Preserves the U and V channels of color A
- BLEND_HUE=9, //!< Preserves the angle of the UV vector of color A
- BLEND_SATURATION=10,//!< Preserves the magnitude of the UV Vector of color A
- BLEND_LUMINANCE=11, //!< Preserves the Y channel of color A
- BLEND_BEHIND=12, //!< Similar to BLEND_COMPOSITE, except that B is composited onto A.
- BLEND_ONTO=13, //!< Similar to BLEND_COMPOSITE, except that B's alpha is maintained
- BLEND_SCREEN=16, //!< \writeme
- BLEND_OVERLAY=20, //!< \writeme
- BLEND_DIFFERENCE=18, //!< \writeme
+ BLEND_COMPOSITE=0, //!< Color A is composited onto B (Taking A's alpha into account)
+ BLEND_STRAIGHT=1, //!< Straight linear interpolation from A->B (Alpha ignored)
+ BLEND_ONTO=13, //!< Similar to BLEND_COMPOSITE, except that B's alpha is maintained
+ BLEND_STRAIGHT_ONTO=21, //!< \deprecated \writeme
+ BLEND_BEHIND=12, //!< Similar to BLEND_COMPOSITE, except that B is composited onto A.
+ BLEND_SCREEN=16, //!< \writeme
+ BLEND_OVERLAY=20, //!< \writeme
BLEND_HARD_LIGHT=17, //!< \writeme
-
- //! Deprecated
- BLEND_ALPHA_BRIGHTEN=14, //!< If A is less opaque than B, use A
- BLEND_ALPHA_DARKEN=15, //!< If A is more opaque than B, use B
- BLEND_ALPHA_OVER=19,//!< multiply alphas and then straight blends that using the amount
- BLEND_STRAIGHT_ONTO=21,//!< \writeme
-
- BLEND_END=22 //!< \internal
+ BLEND_MULTIPLY=6, //!< Simple A*B.
+ BLEND_DIVIDE=7, //!< Simple B/A
+ BLEND_ADD=4, //!< Simple A+B.
+ BLEND_SUBTRACT=5, //!< Simple A-B.
+ BLEND_DIFFERENCE=18, //!< Simple |A-B|.
+ BLEND_BRIGHTEN=2, //!< If composite is brighter than B, use composite. B otherwise.
+ BLEND_DARKEN=3, //!< If composite is darker than B, use composite. B otherwise.
+ BLEND_COLOR=8, //!< Preserves the U and V channels of color A
+ BLEND_HUE=9, //!< Preserves the angle of the UV vector of color A
+ BLEND_SATURATION=10, //!< Preserves the magnitude of the UV Vector of color A
+ BLEND_LUMINANCE=11, //!< Preserves the Y channel of color A
+
+ BLEND_ALPHA_BRIGHTEN=14, //!< \deprecated If A is less opaque than B, use A
+ BLEND_ALPHA_DARKEN=15, //!< \deprecated If A is more opaque than B, use B
+ BLEND_ALPHA_OVER=19, //!< \deprecated multiply alphas and then straight blends using the amount
+
+ BLEND_END=22 //!< \internal
};
/* Other */
|| x==BLEND_HARD_LIGHT
;
}
+
+ //! a blending method is considered 'straight' if transparent pixels in the upper layer can affect the result of the blend
+ static bool is_straight(BlendMethod x)
+ {
+ return x==BLEND_STRAIGHT
+ || x==BLEND_STRAIGHT_ONTO
+ || x==BLEND_ALPHA_BRIGHTEN
+ ;
+ }
/*protected:
value_type& operator[](const int i)
** 3 Endian (BGR/RGB)
** 4 Alpha Location (Start/End)
** 5 ZDepth Location (Start/End)
-** 6 Alpha/ZDepth Arangement (ZA,AZ)
+** 6 Alpha/ZDepth Arrangement (ZA,AZ)
** 7 Alpha Range (Inverted,Normal)
** 8 Z Range (Inverted,Normal)
*/
PF_BGR=(1<<3), //!< If set, reverse the order of the RGB channels
PF_A_START=(1<<4), //!< If set, alpha channel is before the color data. If clear, it is after.
PF_Z_START=(1<<5), //!< If set, ZDepth channel is before the color data. If clear, it is after.
- PF_ZA=(1<<6), //!< If set, the ZDepth channel will be infront of the alpha channel. If clear, they are reversed.
+ PF_ZA=(1<<6), //!< If set, the ZDepth channel will be in front of the alpha channel. If clear, they are reversed.
PF_A_INV=(1<<7), //!< If set, the alpha channel is stored as 1.0-a
PF_Z_INV=(1<<8), //!< If set, the ZDepth channel is stored as 1.0-z
- PF_RAW_COLOR=(1<<9)+(1<<1) //!< If set, the data represents a raw Color datastructure, and all other bits are ignored.
+ PF_RAW_COLOR=(1<<9)+(1<<1) //!< If set, the data represents a raw Color data structure, and all other bits are ignored.
};
inline PixelFormat operator|(PixelFormat lhs, PixelFormat rhs)
projects / synfig.git / blobdiff