urho3d/Source/Urho3D/Math/Rect.cpp

// Copyright (c) 2008-2023 the Urho3D project
// License: MIT

#include "../Precompiled.h"

#include "../Math/Rect.h"

#include <cstdio>

#include "../DebugNew.h"

namespace Urho3D
{

const Rect Rect::FULL(-1.0f, -1.0f, 1.0f, 1.0f);
const Rect Rect::POSITIVE(0.0f, 0.0f, 1.0f, 1.0f);
const Rect Rect::ZERO(0.0f, 0.0f, 0.0f, 0.0f);

const IntRect IntRect::ZERO(0, 0, 0, 0);

void IntRect::Clip(const IntRect& rect)
{
    if (rect.left_ > left_)
        left_ = rect.left_;
    if (rect.right_ < right_)
        right_ = rect.right_;
    if (rect.top_ > top_)
        top_ = rect.top_;
    if (rect.bottom_ < bottom_)
        bottom_ = rect.bottom_;

    if (left_ >= right_ || top_ >= bottom_)
        *this = IntRect();
}

void IntRect::Merge(const IntRect& rect)
{
    if (Width() <= 0 || Height() <= 0)
    {
        *this = rect;
    }
    else if (rect.Width() > 0 && rect.Height() > 0)
    {
        if (rect.left_ < left_)
            left_ = rect.left_;
        if (rect.top_ < top_)
            top_ = rect.top_;
        if (rect.right_ > right_)
            right_ = rect.right_;
        if (rect.bottom_ > bottom_)
            bottom_ = rect.bottom_;
    }
}

String Rect::ToString() const
{
    char tempBuffer[CONVERSION_BUFFER_LENGTH];
    sprintf(tempBuffer, "%g %g %g %g", min_.x_, min_.y_, max_.x_, max_.y_);
    return String(tempBuffer);
}

String IntRect::ToString() const
{
    char tempBuffer[CONVERSION_BUFFER_LENGTH];
    sprintf(tempBuffer, "%d %d %d %d", left_, top_, right_, bottom_);
    return String(tempBuffer);
}

void Rect::Clip(const Rect& rect)
{
    if (rect.min_.x_ > min_.x_)
        min_.x_ = rect.min_.x_;
    if (rect.max_.x_ < max_.x_)
        max_.x_ = rect.max_.x_;
    if (rect.min_.y_ > min_.y_)
        min_.y_ = rect.min_.y_;
    if (rect.max_.y_ < max_.y_)
        max_.y_ = rect.max_.y_;

    if (min_.x_ > max_.x_ || min_.y_ > max_.y_)
    {
        min_ = Vector2(M_INFINITY, M_INFINITY);
        max_ = Vector2(-M_INFINITY, -M_INFINITY);
    }
}

}