+++ /dev/null
-///////////////////////////////////////////////////////////////////////////
-//
-// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
-// Digital Ltd. LLC
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// * Neither the name of Industrial Light & Magic nor the names of
-// its contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-///////////////////////////////////////////////////////////////////////////
-
-
-
-#ifndef INCLUDED_IMATHCOLORALGO_H
-#define INCLUDED_IMATHCOLORALGO_H
-
-
-#include "ImathColor.h"
-#include "ImathMath.h"
-#include "ImathLimits.h"
-
-namespace Imath {
-
-
-//
-// Non-templated helper routines for color conversion.
-// These routines eliminate type warnings under g++.
-//
-
-Vec3<double> hsv2rgb_d(const Vec3<double> &hsv);
-
-Color4<double> hsv2rgb_d(const Color4<double> &hsv);
-
-
-Vec3<double> rgb2hsv_d(const Vec3<double> &rgb);
-
-Color4<double> rgb2hsv_d(const Color4<double> &rgb);
-
-
-//
-// Color conversion functions and general color algorithms
-//
-// hsv2rgb(), rgb2hsv(), rgb2packed(), packed2rgb()
-// see each funtion definition for details.
-//
-
-template<class T>
-Vec3<T>
-hsv2rgb(const Vec3<T> &hsv)
-{
- if ( limits<T>::isIntegral() )
- {
- Vec3<double> v = Vec3<double>(hsv.x / double(limits<T>::max()),
- hsv.y / double(limits<T>::max()),
- hsv.z / double(limits<T>::max()));
- Vec3<double> c = hsv2rgb_d(v);
- return Vec3<T>((T) (c.x * limits<T>::max()),
- (T) (c.y * limits<T>::max()),
- (T) (c.z * limits<T>::max()));
- }
- else
- {
- Vec3<double> v = Vec3<double>(hsv.x, hsv.y, hsv.z);
- Vec3<double> c = hsv2rgb_d(v);
- return Vec3<T>((T) c.x, (T) c.y, (T) c.z);
- }
-}
-
-
-template<class T>
-Color4<T>
-hsv2rgb(const Color4<T> &hsv)
-{
- if ( limits<T>::isIntegral() )
- {
- Color4<double> v = Color4<double>(hsv.r / float(limits<T>::max()),
- hsv.g / float(limits<T>::max()),
- hsv.b / float(limits<T>::max()),
- hsv.a / float(limits<T>::max()));
- Color4<double> c = hsv2rgb_d(v);
- return Color4<T>((T) (c.r * limits<T>::max()),
- (T) (c.g * limits<T>::max()),
- (T) (c.b * limits<T>::max()),
- (T) (c.a * limits<T>::max()));
- }
- else
- {
- Color4<double> v = Color4<double>(hsv.r, hsv.g, hsv.g, hsv.a);
- Color4<double> c = hsv2rgb_d(v);
- return Color4<T>((T) c.r, (T) c.g, (T) c.b, (T) c.a);
- }
-}
-
-
-template<class T>
-Vec3<T>
-rgb2hsv(const Vec3<T> &rgb)
-{
- if ( limits<T>::isIntegral() )
- {
- Vec3<double> v = Vec3<double>(rgb.x / double(limits<T>::max()),
- rgb.y / double(limits<T>::max()),
- rgb.z / double(limits<T>::max()));
- Vec3<double> c = rgb2hsv_d(v);
- return Vec3<T>((T) (c.x * limits<T>::max()),
- (T) (c.y * limits<T>::max()),
- (T) (c.z * limits<T>::max()));
- }
- else
- {
- Vec3<double> v = Vec3<double>(rgb.x, rgb.y, rgb.z);
- Vec3<double> c = rgb2hsv_d(v);
- return Vec3<T>((T) c.x, (T) c.y, (T) c.z);
- }
-}
-
-
-template<class T>
-Color4<T>
-rgb2hsv(const Color4<T> &rgb)
-{
- if ( limits<T>::isIntegral() )
- {
- Color4<double> v = Color4<double>(rgb.r / float(limits<T>::max()),
- rgb.g / float(limits<T>::max()),
- rgb.b / float(limits<T>::max()),
- rgb.a / float(limits<T>::max()));
- Color4<double> c = rgb2hsv_d(v);
- return Color4<T>((T) (c.r * limits<T>::max()),
- (T) (c.g * limits<T>::max()),
- (T) (c.b * limits<T>::max()),
- (T) (c.a * limits<T>::max()));
- }
- else
- {
- Color4<double> v = Color4<double>(rgb.r, rgb.g, rgb.g, rgb.a);
- Color4<double> c = rgb2hsv_d(v);
- return Color4<T>((T) c.r, (T) c.g, (T) c.b, (T) c.a);
- }
-}
-
-template <class T>
-PackedColor
-rgb2packed(const Vec3<T> &c)
-{
- if ( limits<T>::isIntegral() )
- {
- float x = c.x / float(limits<T>::max());
- float y = c.y / float(limits<T>::max());
- float z = c.z / float(limits<T>::max());
- return rgb2packed( V3f(x,y,z) );
- }
- else
- {
- return ( (PackedColor) (c.x * 255) |
- (((PackedColor) (c.y * 255)) << 8) |
- (((PackedColor) (c.z * 255)) << 16) | 0xFF000000 );
- }
-}
-
-template <class T>
-PackedColor
-rgb2packed(const Color4<T> &c)
-{
- if ( limits<T>::isIntegral() )
- {
- float r = c.r / float(limits<T>::max());
- float g = c.g / float(limits<T>::max());
- float b = c.b / float(limits<T>::max());
- float a = c.a / float(limits<T>::max());
- return rgb2packed( C4f(r,g,b,a) );
- }
- else
- {
- return ( (PackedColor) (c.r * 255) |
- (((PackedColor) (c.g * 255)) << 8) |
- (((PackedColor) (c.b * 255)) << 16) |
- (((PackedColor) (c.a * 255)) << 24));
- }
-}
-
-//
-// This guy can't return the result because the template
-// parameter would not be in the function signiture. So instead,
-// its passed in as an argument.
-//
-
-template <class T>
-void
-packed2rgb(PackedColor packed, Vec3<T> &out)
-{
- if ( limits<T>::isIntegral() )
- {
- T f = limits<T>::max() / ((PackedColor)0xFF);
- out.x = (packed & 0xFF) * f;
- out.y = ((packed & 0xFF00) >> 8) * f;
- out.z = ((packed & 0xFF0000) >> 16) * f;
- }
- else
- {
- T f = T(1) / T(255);
- out.x = (packed & 0xFF) * f;
- out.y = ((packed & 0xFF00) >> 8) * f;
- out.z = ((packed & 0xFF0000) >> 16) * f;
- }
-}
-
-template <class T>
-void
-packed2rgb(PackedColor packed, Color4<T> &out)
-{
- if ( limits<T>::isIntegral() )
- {
- T f = limits<T>::max() / ((PackedColor)0xFF);
- out.r = (packed & 0xFF) * f;
- out.g = ((packed & 0xFF00) >> 8) * f;
- out.b = ((packed & 0xFF0000) >> 16) * f;
- out.a = ((packed & 0xFF000000) >> 24) * f;
- }
- else
- {
- T f = T(1) / T(255);
- out.r = (packed & 0xFF) * f;
- out.g = ((packed & 0xFF00) >> 8) * f;
- out.b = ((packed & 0xFF0000) >> 16) * f;
- out.a = ((packed & 0xFF000000) >> 24) * f;
- }
-}
-
-
-} // namespace Imath
-
-#endif
projects / opencv / blobdiff