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/*
* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Math.h>
#include <LibGfx/Color.h>
#include <LibGfx/Size.h>
namespace Gfx {
struct ColorStop {
Color color;
float position = AK::NaN<float>;
Optional<float> transition_hint = {};
};
class GradientLine;
inline float normalized_gradient_angle_radians(float gradient_angle)
{
// Adjust angle so 0 degrees is bottom
float real_angle = 90 - gradient_angle;
return real_angle * (AK::Pi<float> / 180);
}
template<typename T>
inline float calculate_gradient_length(Size<T> gradient_size, float sin_angle, float cos_angle)
{
return AK::fabs(static_cast<float>(gradient_size.height()) * sin_angle) + AK::fabs(static_cast<float>(gradient_size.width()) * cos_angle);
}
template<typename T>
inline float calculate_gradient_length(Size<T> gradient_size, float gradient_angle)
{
float angle = normalized_gradient_angle_radians(gradient_angle);
float sin_angle, cos_angle;
AK::sincos(angle, sin_angle, cos_angle);
return calculate_gradient_length(gradient_size, sin_angle, cos_angle);
}
}
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