#include <rect.h>

Public Types
using	Type = T

Public Member Functions
constexpr	TRect ()

template<class U >
constexpr	TRect (const TRect< U > &other)

constexpr TRect	operator+ (const TRect &r) const

constexpr TRect	operator- (const TRect &r) const

constexpr TRect	operator* (Type scale) const

constexpr TRect	operator* (const TRect &r) const

constexpr bool	operator== (const TRect &r) const

constexpr TRect	Scale (Type scale) const

constexpr TRect	Scale (Type scale_x, Type scale_y) const

constexpr TRect	Scale (TPoint< T > scale) const

constexpr TRect	Scale (TSize< T > scale) const

constexpr bool	Contains (const TPoint< Type > &p) const

constexpr bool	Contains (const TRect &o) const

constexpr bool	IsEmpty () const
	Returns true if either of the width or height are 0, negative, or NaN. More...

constexpr bool	IsSquare () const
	Returns true if width and height are equal and neither is NaN. More...

constexpr bool	IsMaximum () const

constexpr TPoint< Type >	GetOrigin () const
	Returns the upper left corner of the rectangle as specified when it was constructed. More...

constexpr TSize< Type >	GetSize () const
	Returns the size of the rectangle as specified when it was constructed and which may be negative in either width or height. More...

constexpr Type	GetX () const
	Returns the X coordinate of the upper left corner, equivalent to \|GetOrigin().x\|. More...

constexpr Type	GetY () const
	Returns the Y coordinate of the upper left corner, equivalent to \|GetOrigin().y\|. More...

constexpr Type	GetWidth () const
	Returns the width of the rectangle, equivalent to \|GetSize().width\|. More...

constexpr Type	GetHeight () const
	Returns the height of the rectangle, equivalent to \|GetSize().height\|. More...

constexpr auto	GetLeft () const

constexpr auto	GetTop () const

constexpr auto	GetRight () const

constexpr auto	GetBottom () const

constexpr TPoint< T >	GetLeftTop () const

constexpr TPoint< T >	GetRightTop () const

constexpr TPoint< T >	GetLeftBottom () const

constexpr TPoint< T >	GetRightBottom () const

constexpr T	Area () const
	Get the area of the rectangle, equivalent to \|GetSize().Area()\|. More...

constexpr Point	GetCenter () const
	Get the center point as a \|Point\|. More...

constexpr std::array< T, 4 >	GetLTRB () const

constexpr std::array< T, 4 >	GetXYWH () const
	Get the x, y coordinates of the origin and the width and height of the rectangle in an array. More...

constexpr TRect	GetPositive () const
	Get a version of this rectangle that has a non-negative size. More...

constexpr std::array< TPoint< T >, 4 >	GetPoints () const
	Get the points that represent the 4 corners of this rectangle. The order is: Top left, top right, bottom left, bottom right. More...

constexpr std::array< TPoint< T >, 4 >	GetTransformedPoints (const Matrix &transform) const

constexpr TRect	TransformBounds (const Matrix &transform) const
	Creates a new bounding box that contains this transformed rectangle. More...

constexpr Matrix	GetNormalizingTransform () const
	Constructs a Matrix that will map all points in the coordinate space of the rectangle into a new normalized coordinate space where the upper left corner of the rectangle maps to (0, 0) and the lower right corner of the rectangle maps to (1, 1). More...

constexpr TRect	Union (const TRect &o) const

constexpr std::optional< TRect< T > >	Intersection (const TRect &o) const

constexpr bool	IntersectsWithRect (const TRect &o) const

constexpr std::optional< TRect< T > >	Cutout (const TRect &o) const
	Returns the new boundary rectangle that would result from the rectangle being cutout by a second rectangle. More...

constexpr TRect< T >	Shift (TPoint< T > offset) const
	Returns a new rectangle translated by the given offset. More...

constexpr TRect< T >	Expand (T left, T top, T right, T bottom) const
	Returns a rectangle with expanded edges. Negative expansion results in shrinking. More...

constexpr TRect< T >	Expand (T amount) const
	Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking. More...

constexpr TRect< T >	Expand (T horizontal_amount, T vertical_amount) const
	Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking. More...

constexpr TRect< T >	Expand (TPoint< T > amount) const
	Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking. More...

constexpr TRect< T >	Expand (TSize< T > amount) const
	Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking. More...

constexpr TRect< T >	Project (TRect< T > source) const
	Returns a new rectangle that represents the projection of the source rectangle onto this rectangle. In other words, the source rectangle is redefined in terms of the corrdinate space of this rectangle. More...

Static Public Member Functions
constexpr static TRect	MakeLTRB (Type left, Type top, Type right, Type bottom)

constexpr static TRect	MakeXYWH (Type x, Type y, Type width, Type height)

constexpr static TRect	MakeOriginSize (const TPoint< Type > &origin, const TSize< Type > &size)

template<class U >
constexpr static TRect	MakeSize (const TSize< U > &size)

template<typename U >
constexpr static std::optional< TRect >	MakePointBounds (const U &value)

template<typename PointIter >
constexpr static std::optional< TRect >	MakePointBounds (const PointIter first, const PointIter last)

constexpr static TRect	MakeMaximum ()

constexpr static TRect	RoundOut (const TRect &r)

constexpr static std::optional< TRect >	Union (const TRect &a, const std::optional< TRect > b)

constexpr static std::optional< TRect >	Union (const std::optional< TRect > a, const TRect &b)

constexpr static std::optional< TRect >	Union (const std::optional< TRect > a, const std::optional< TRect > b)

constexpr static std::optional< TRect >	Intersection (const TRect &a, const std::optional< TRect > b)

constexpr static std::optional< TRect >	Intersection (const std::optional< TRect > a, const TRect &b)

constexpr static std::optional< TRect >	Intersection (const std::optional< TRect > a, const std::optional< TRect > b)

Detailed Description

template<class T>
struct impeller::TRect< T >

Definition at line 22 of file rect.h.

Member Typedef Documentation

◆ Type

template<class T >

using impeller::TRect< T >::Type = T

Definition at line 23 of file rect.h.

Constructor & Destructor Documentation

◆ TRect() [1/2]

template<class T >

constexpr impeller::TRect< T >::TRect ( )

inlineconstexpr

Definition at line 25 of file rect.h.

25 : origin({0, 0}), size({0, 0}) {}

Referenced by impeller::TRect< Scalar >::Expand(), impeller::TRect< Scalar >::MakeLTRB(), impeller::TRect< Scalar >::MakeOriginSize(), impeller::TRect< Scalar >::MakeSize(), impeller::TRect< Scalar >::MakeXYWH(), impeller::TRect< Scalar >::operator*(), impeller::TRect< Scalar >::operator+(), impeller::TRect< Scalar >::operator-(), impeller::TRect< Scalar >::Scale(), and impeller::TRect< Scalar >::Shift().

◆ TRect() [2/2]

template<class T >

template<class U >

constexpr impeller::TRect< T >::TRect ( const TRect< U > & other )

inlineexplicitconstexpr

Definition at line 80 of file rect.h.

       : origin(static_cast<T>(other.GetX()), static_cast<T>(other.GetY())),
         size(static_cast<T>(other.GetWidth()),
              static_cast<T>(other.GetHeight())) {}

Member Function Documentation

◆ Area()

template<class T >

constexpr T impeller::TRect< T >::Area ( ) const

inlineconstexpr

Get the area of the rectangle, equivalent to |GetSize().Area()|.

Definition at line 222 of file rect.h.

222 { return size.Area(); }

◆ Contains() [1/2]

template<class T >

constexpr bool impeller::TRect< T >::Contains ( const TPoint< Type > & p ) const

inlineconstexpr

Definition at line 127 of file rect.h.

                                                                      {
     return p.x >= GetLeft() && p.x < GetRight() && p.y >= GetTop() &&
            p.y < GetBottom();
   }

Referenced by impeller::RectGeometry::CoversArea(), impeller::RoundRectGeometry::CoversArea(), impeller::FillPathGeometry::CoversArea(), and impeller::testing::TEST().

◆ Contains() [2/2]

template<class T >

constexpr bool impeller::TRect< T >::Contains ( const TRect< T > & o ) const

inlineconstexpr

Definition at line 132 of file rect.h.

                                                               {
     return o.GetLeft() >= GetLeft() && o.GetTop() >= GetTop() &&
            o.GetRight() <= GetRight() && o.GetBottom() <= GetBottom();
   }

◆ Cutout()

template<class T >

constexpr std::optional<TRect<T> > impeller::TRect< T >::Cutout ( const TRect< T > & o ) const

inlineconstexpr

Returns the new boundary rectangle that would result from the rectangle being cutout by a second rectangle.

Definition at line 334 of file rect.h.

                                                                              {
     const auto& [a_left, a_top, a_right, a_bottom] = GetLTRB();  // Source rect.
     const auto& [b_left, b_top, b_right, b_bottom] = o.GetLTRB();  // Cutout.
     if (b_left <= a_left && b_right >= a_right) {
       if (b_top <= a_top && b_bottom >= a_bottom) {
         // Full cutout.
         return std::nullopt;
       }
       if (b_top <= a_top && b_bottom > a_top) {
         // Cuts off the top.
         return TRect::MakeLTRB(a_left, b_bottom, a_right, a_bottom);
       }
       if (b_bottom >= a_bottom && b_top < a_bottom) {
         // Cuts out the bottom.
         return TRect::MakeLTRB(a_left, a_top, a_right, b_top);
       }
     }
     if (b_top <= a_top && b_bottom >= a_bottom) {
       if (b_left <= a_left && b_right > a_left) {
         // Cuts out the left.
         return TRect::MakeLTRB(b_right, a_top, a_right, a_bottom);
       }
       if (b_right >= a_right && b_left < a_right) {
         // Cuts out the right.
         return TRect::MakeLTRB(a_left, a_top, b_left, a_bottom);
       }
     }
  
     return *this;
   }

Referenced by impeller::testing::TEST().

◆ Expand() [1/5]

template<class T >

constexpr TRect<T> impeller::TRect< T >::Expand ( T amount ) const

inlineconstexpr

Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking.

Definition at line 385 of file rect.h.

                                                           {
     return TRect(origin.x - amount,        //
                  origin.y - amount,        //
                  size.width + amount * 2,  //
                  size.height + amount * 2);
   }

◆ Expand() [2/5]

template<class T >

constexpr TRect<T> impeller::TRect< T >::Expand	(	T	horizontal_amount,
		T	vertical_amount
	)		const

inlineconstexpr

Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking.

Definition at line 394 of file rect.h.

                                                                    {
     return TRect(origin.x - horizontal_amount,        //
                  origin.y - vertical_amount,          //
                  size.width + horizontal_amount * 2,  //
                  size.height + vertical_amount * 2);
   }

◆ Expand() [3/5]

template<class T >

constexpr TRect<T> impeller::TRect< T >::Expand	(	T	left,
		T	top,
		T	right,
		T	bottom
	)		const

inlineconstexpr

Returns a rectangle with expanded edges. Negative expansion results in shrinking.

Definition at line 373 of file rect.h.

                                                           {
     return TRect(origin.x - left,            //
                  origin.y - top,             //
                  size.width + left + right,  //
                  size.height + top + bottom);
   }

Referenced by impeller::Canvas::ClipRRect(), impeller::RoundRectGeometry::CoversArea(), impeller::BorderMaskBlurFilterContents::GetFilterCoverage(), impeller::DirectionalGaussianBlurFilterContents::GetFilterCoverage(), impeller::BorderMaskBlurFilterContents::GetFilterSourceCoverage(), impeller::DirectionalMorphologyFilterContents::GetFilterSourceCoverage(), impeller::GaussianBlurFilterContents::GetFilterSourceCoverage(), impeller::DirectionalGaussianBlurFilterContents::GetFilterSourceCoverage(), and impeller::testing::TEST_P().

◆ Expand() [4/5]

template<class T >

constexpr TRect<T> impeller::TRect< T >::Expand ( TPoint< T > amount ) const

inlineconstexpr

Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking.

Definition at line 404 of file rect.h.

                                                                   {
     return TRect(origin.x - amount.x,        //
                  origin.y - amount.y,        //
                  size.width + amount.x * 2,  //
                  size.height + amount.y * 2);
   }

◆ Expand() [5/5]

template<class T >

constexpr TRect<T> impeller::TRect< T >::Expand ( TSize< T > amount ) const

inlineconstexpr

Returns a rectangle with expanded edges in all directions. Negative expansion results in shrinking.

Definition at line 413 of file rect.h.

                                                                  {
     return TRect(origin.x - amount.width,        //
                  origin.y - amount.height,       //
                  size.width + amount.width * 2,  //
                  size.height + amount.height * 2);
   }

◆ GetBottom()

template<class T >

constexpr auto impeller::TRect< T >::GetBottom ( ) const

inlineconstexpr

Definition at line 198 of file rect.h.

                                                  {
     if (IsMaximum()) {
       return std::numeric_limits<Type>::infinity();
     }
     return std::max(origin.y, origin.y + size.height);
   }

Referenced by impeller::Canvas::Canvas(), impeller::TRect< Scalar >::Contains(), impeller::DlDispatcher::drawDisplayList(), impeller::NinePatchConverter::DrawNinePatch(), impeller::TRect< Scalar >::GetLeftBottom(), impeller::TRect< Scalar >::GetLTRB(), impeller::TRect< Scalar >::GetRightBottom(), and impeller::TRect< Scalar >::RoundOut().

◆ GetCenter()

template<class T >

constexpr Point impeller::TRect< T >::GetCenter ( ) const

inlineconstexpr

Get the center point as a |Point|.

Definition at line 225 of file rect.h.

                                                   {
     return Point(origin.x + size.width * 0.5f, origin.y + size.height * 0.5f);
   }

Referenced by impeller::PathBuilder::AddArc(), impeller::PathBuilder::AddOval(), impeller::Canvas::DrawOval(), and impeller::Tessellator::FilledEllipse().

◆ GetHeight()

template<class T >

constexpr Type impeller::TRect< T >::GetHeight ( ) const

inlineconstexpr

Returns the height of the rectangle, equivalent to |GetSize().height|.

Definition at line 175 of file rect.h.

175 { return size.height; }

Referenced by impeller::Canvas::ClipRRect(), impeller::RoundRectGeometry::CoversArea(), impeller::DrawGlyph(), impeller::BlitCopyTextureToTextureCommandGLES::Encode(), impeller::BlitCopyTextureToTextureCommandMTL::Encode(), impeller::BlitCopyTextureToTextureCommandVK::Encode(), impeller::BlitCopyTextureToBufferCommandGLES::Encode(), impeller::BlitCopyTextureToBufferCommandMTL::Encode(), impeller::BlitCopyTextureToBufferCommandVK::Encode(), impeller::Tessellator::FilledRoundRect(), impeller::AtlasBlenderKey::Hash::operator()(), RectNear(), impeller::PassBindingsCache::SetScissor(), impeller::PassBindingsCache::SetViewport(), and impeller::testing::TEST().

◆ GetLeft()

template<class T >

constexpr auto impeller::TRect< T >::GetLeft ( ) const

inlineconstexpr

Definition at line 177 of file rect.h.

                                                {
     if (IsMaximum()) {
       return -std::numeric_limits<Type>::infinity();
     }
     return std::min(origin.x, origin.x + size.width);
   }

Referenced by impeller::Canvas::Canvas(), impeller::TRect< Scalar >::Contains(), impeller::DlDispatcher::drawDisplayList(), impeller::DrawGlyph(), impeller::NinePatchConverter::DrawNinePatch(), impeller::TRect< Scalar >::GetLeftBottom(), impeller::TRect< Scalar >::GetLeftTop(), impeller::TRect< Scalar >::GetLTRB(), and impeller::TRect< Scalar >::RoundOut().

◆ GetLeftBottom()

template<class T >

constexpr TPoint<T> impeller::TRect< T >::GetLeftBottom ( ) const

inlineconstexpr

Definition at line 213 of file rect.h.

                                                           {
     return {GetLeft(), GetBottom()};
   }

◆ GetLeftTop()

template<class T >

constexpr TPoint<T> impeller::TRect< T >::GetLeftTop ( ) const

inlineconstexpr

Definition at line 205 of file rect.h.

                                                        {
     return {GetLeft(), GetTop()};
   }

Referenced by impeller::Tessellator::FilledRoundRect().

◆ GetLTRB()

template<class T >

constexpr std::array<T, 4> impeller::TRect< T >::GetLTRB ( ) const

inlineconstexpr

Definition at line 229 of file rect.h.

                                                          {
     return {GetLeft(), GetTop(), GetRight(), GetBottom()};
   }

Referenced by impeller::TRect< Scalar >::Cutout(), impeller::TRect< Scalar >::GetPoints(), impeller::TRect< Scalar >::GetPositive(), impeller::TRect< Scalar >::Intersection(), and impeller::TRect< Scalar >::Union().

◆ GetNormalizingTransform()

template<class T >

constexpr Matrix impeller::TRect< T >::GetNormalizingTransform ( ) const

inlineconstexpr

Constructs a Matrix that will map all points in the coordinate space of the rectangle into a new normalized coordinate space where the upper left corner of the rectangle maps to (0, 0) and the lower right corner of the rectangle maps to (1, 1).

Empty and non-finite rectangles will return a zero-scaling transform that maps all points to (0, 0).

Definition at line 280 of file rect.h.

                                                                  {
     if (!IsEmpty()) {
       Scalar sx = 1.0 / size.width;
       Scalar sy = 1.0 / size.height;
       Scalar tx = origin.x * -sx;
       Scalar ty = origin.y * -sy;
  
       // Exclude NaN and infinities and either scale underflowing to zero
       if (sx != 0.0 && sy != 0.0 && 0.0 * sx * sy * tx * ty == 0.0) {
         // clang-format off
         return Matrix(  sx, 0.0f, 0.0f, 0.0f,
                       0.0f,   sy, 0.0f, 0.0f,
                       0.0f, 0.0f, 1.0f, 0.0f,
                         tx,   ty, 0.0f, 1.0f);
         // clang-format on
       }
     }
  
     // Map all coordinates to the origin.
     return Matrix::MakeScale({0.0f, 0.0f, 1.0f});
   }

Referenced by impeller::ComputeUVGeometryForRect(), and impeller::VerticesGeometry::GetPositionUVBuffer().

◆ GetOrigin()

template<class T >

constexpr TPoint<Type> impeller::TRect< T >::GetOrigin ( ) const

inlineconstexpr

Returns the upper left corner of the rectangle as specified when it was constructed.

Definition at line 154 of file rect.h.

154 { return origin; }

Referenced by impeller::PathBuilder::AddArc(), impeller::PathBuilder::AddOval(), impeller::PathBuilder::AddRect(), impeller::PathBuilder::AddRoundedRect(), impeller::AdvancedBlend(), impeller::DirectionalMorphologyFilterContents::GetFilterCoverage(), std::operator<<(), impeller::PipelineBlend(), and impeller::testing::TEST().

◆ GetPoints()

template<class T >

constexpr std::array<TPoint<T>, 4> impeller::TRect< T >::GetPoints ( ) const

inlineconstexpr

Get the points that represent the 4 corners of this rectangle. The order is: Top left, top right, bottom left, bottom right.

Definition at line 247 of file rect.h.

                                                                    {
     auto [left, top, right, bottom] = GetLTRB();
     return {TPoint(left, top), TPoint(right, top), TPoint(left, bottom),
             TPoint(right, bottom)};
   }

Referenced by impeller::ComputeUVGeometryForRect(), impeller::TRect< Scalar >::GetTransformedPoints(), impeller::ClipContents::Render(), and impeller::testing::TEST().

◆ GetPositive()

template<class T >

constexpr TRect impeller::TRect< T >::GetPositive ( ) const

inlineconstexpr

Get a version of this rectangle that has a non-negative size.

Definition at line 240 of file rect.h.

                                                     {
     auto ltrb = GetLTRB();
     return MakeLTRB(ltrb[0], ltrb[1], ltrb[2], ltrb[3]);
   }

Referenced by impeller::testing::TEST().

◆ GetRight()

template<class T >

constexpr auto impeller::TRect< T >::GetRight ( ) const

inlineconstexpr

Definition at line 191 of file rect.h.

                                                 {
     if (IsMaximum()) {
       return std::numeric_limits<Type>::infinity();
     }
     return std::max(origin.x, origin.x + size.width);
   }

Referenced by impeller::Canvas::Canvas(), impeller::TRect< Scalar >::Contains(), impeller::DlDispatcher::drawDisplayList(), impeller::NinePatchConverter::DrawNinePatch(), impeller::TRect< Scalar >::GetLTRB(), impeller::TRect< Scalar >::GetRightBottom(), impeller::TRect< Scalar >::GetRightTop(), and impeller::TRect< Scalar >::RoundOut().

◆ GetRightBottom()

template<class T >

constexpr TPoint<T> impeller::TRect< T >::GetRightBottom ( ) const

inlineconstexpr

Definition at line 217 of file rect.h.

                                                            {
     return {GetRight(), GetBottom()};
   }

Referenced by impeller::Tessellator::FilledRoundRect().

◆ GetRightTop()

template<class T >

constexpr TPoint<T> impeller::TRect< T >::GetRightTop ( ) const

inlineconstexpr

Definition at line 209 of file rect.h.

                                                         {
     return {GetRight(), GetTop()};
   }

◆ GetSize()

template<class T >

constexpr TSize<Type> impeller::TRect< T >::GetSize ( ) const

inlineconstexpr

Returns the size of the rectangle as specified when it was constructed and which may be negative in either width or height.

Definition at line 159 of file rect.h.

159 { return size; }

Referenced by impeller::PathBuilder::AddRect(), impeller::PathBuilder::AddRoundedRect(), impeller::AdvancedBlend(), impeller::CanAppendToExistingAtlas(), impeller::Canvas::DrawOval(), impeller::Tessellator::FilledEllipse(), impeller::DirectionalMorphologyFilterContents::GetFilterCoverage(), std::operator<<(), impeller::PipelineBlend(), impeller::testing::TEST(), and impeller::testing::TEST_P().

◆ GetTop()

template<class T >

constexpr auto impeller::TRect< T >::GetTop ( ) const

inlineconstexpr

Definition at line 184 of file rect.h.

                                               {
     if (IsMaximum()) {
       return -std::numeric_limits<Type>::infinity();
     }
     return std::min(origin.y, origin.y + size.height);
   }

Referenced by impeller::Canvas::Canvas(), impeller::TRect< Scalar >::Contains(), impeller::DlDispatcher::drawDisplayList(), impeller::DrawGlyph(), impeller::NinePatchConverter::DrawNinePatch(), impeller::TRect< Scalar >::GetLeftTop(), impeller::TRect< Scalar >::GetLTRB(), impeller::TRect< Scalar >::GetRightTop(), and impeller::TRect< Scalar >::RoundOut().

◆ GetTransformedPoints()

template<class T >

constexpr std::array<TPoint<T>, 4> impeller::TRect< T >::GetTransformedPoints ( const Matrix & transform ) const

inlineconstexpr

Definition at line 253 of file rect.h.

                                      {
     auto points = GetPoints();
     for (size_t i = 0; i < points.size(); i++) {
       points[i] = transform * points[i];
     }
     return points;
   }

Referenced by impeller::GaussianBlurFilterContents::CalculateUVs(), impeller::Snapshot::GetCoverageUVs(), impeller::AtlasContents::Render(), impeller::AtlasTextureContents::Render(), impeller::AtlasColorContents::Render(), impeller::testing::TEST(), and impeller::TRect< Scalar >::TransformBounds().

◆ GetWidth()

template<class T >

constexpr Type impeller::TRect< T >::GetWidth ( ) const

inlineconstexpr

Returns the width of the rectangle, equivalent to |GetSize().width|.

Definition at line 171 of file rect.h.

171 { return size.width; }

Referenced by impeller::Canvas::ClipRRect(), impeller::RoundRectGeometry::CoversArea(), impeller::DrawGlyph(), impeller::Canvas::DrawOval(), impeller::BlitCopyTextureToTextureCommandGLES::Encode(), impeller::BlitCopyTextureToTextureCommandMTL::Encode(), impeller::BlitCopyTextureToTextureCommandVK::Encode(), impeller::BlitCopyTextureToBufferCommandGLES::Encode(), impeller::BlitCopyTextureToBufferCommandMTL::Encode(), impeller::BlitCopyTextureToBufferCommandVK::Encode(), impeller::Tessellator::FilledEllipse(), impeller::Tessellator::FilledRoundRect(), impeller::AtlasBlenderKey::Hash::operator()(), RectNear(), impeller::PassBindingsCache::SetScissor(), impeller::PassBindingsCache::SetViewport(), and impeller::testing::TEST().

◆ GetX()

template<class T >

constexpr Type impeller::TRect< T >::GetX ( ) const

inlineconstexpr

Returns the X coordinate of the upper left corner, equivalent to |GetOrigin().x|.

Definition at line 163 of file rect.h.

163 { return origin.x; }

Referenced by impeller::DrawGlyph(), impeller::BlitCopyTextureToTextureCommandGLES::Encode(), impeller::BlitCopyTextureToTextureCommandMTL::Encode(), impeller::BlitCopyTextureToTextureCommandVK::Encode(), impeller::BlitCopyTextureToBufferCommandGLES::Encode(), impeller::BlitCopyTextureToBufferCommandMTL::Encode(), impeller::BlitCopyTextureToBufferCommandVK::Encode(), impeller::AtlasBlenderKey::Hash::operator()(), RectNear(), impeller::PassBindingsCache::SetScissor(), impeller::PassBindingsCache::SetViewport(), and impeller::testing::TEST().

◆ GetXYWH()

template<class T >

constexpr std::array<T, 4> impeller::TRect< T >::GetXYWH ( ) const

inlineconstexpr

Get the x, y coordinates of the origin and the width and height of the rectangle in an array.

Definition at line 235 of file rect.h.

                                                          {
     return {origin.x, origin.y, size.width, size.height};
   }

Referenced by impeller::TextContents::Render(), and impeller::testing::TEST().

◆ GetY()

template<class T >

constexpr Type impeller::TRect< T >::GetY ( ) const

inlineconstexpr

Returns the Y coordinate of the upper left corner, equivalent to |GetOrigin().y|.

Definition at line 167 of file rect.h.

167 { return origin.y; }

Referenced by impeller::DrawGlyph(), impeller::BlitCopyTextureToTextureCommandGLES::Encode(), impeller::BlitCopyTextureToTextureCommandMTL::Encode(), impeller::BlitCopyTextureToTextureCommandVK::Encode(), impeller::BlitCopyTextureToBufferCommandGLES::Encode(), impeller::BlitCopyTextureToBufferCommandMTL::Encode(), impeller::BlitCopyTextureToBufferCommandVK::Encode(), impeller::AtlasBlenderKey::Hash::operator()(), RectNear(), impeller::PassBindingsCache::SetScissor(), impeller::PassBindingsCache::SetViewport(), and impeller::testing::TEST().

◆ Intersection() [1/4]

template<class T >

constexpr static std::optional<TRect> impeller::TRect< T >::Intersection	(	const std::optional< TRect< T > >	a,
		const std::optional< TRect< T > >	b
	)

inlinestaticconstexpr

Definition at line 465 of file rect.h.

                                   {
     return a.has_value() ? Intersection(a.value(), b) : b;
   }

◆ Intersection() [2/4]

template<class T >

constexpr static std::optional<TRect> impeller::TRect< T >::Intersection	(	const std::optional< TRect< T > >	a,
		const TRect< T > &	b
	)

inlinestaticconstexpr

Definition at line 459 of file rect.h.

                       {
     return Intersection(b, a);
   }

◆ Intersection() [3/4]

template<class T >

constexpr static std::optional<TRect> impeller::TRect< T >::Intersection	(	const TRect< T > &	a,
		const std::optional< TRect< T > >	b
	)

inlinestaticconstexpr

Definition at line 453 of file rect.h.

                                   {
     return b.has_value() ? a.Intersection(b.value()) : a;
   }

◆ Intersection() [4/4]

template<class T >

constexpr std::optional<TRect<T> > impeller::TRect< T >::Intersection ( const TRect< T > & o ) const

inlineconstexpr

Definition at line 312 of file rect.h.

                             {
     auto this_ltrb = GetLTRB();
     auto other_ltrb = o.GetLTRB();
     auto intersection =
         TRect::MakeLTRB(std::max(this_ltrb[0], other_ltrb[0]),  //
                         std::max(this_ltrb[1], other_ltrb[1]),  //
                         std::min(this_ltrb[2], other_ltrb[2]),  //
                         std::min(this_ltrb[3], other_ltrb[3])   //
         );
     if (intersection.size.IsEmpty()) {
       return std::nullopt;
     }
     return intersection;
   }

Referenced by impeller::AdvancedBlend(), impeller::TRect< Scalar >::Intersection(), impeller::TRect< Scalar >::IntersectsWithRect(), impeller::PipelineBlend(), and impeller::testing::TEST().

◆ IntersectsWithRect()

template<class T >

constexpr bool impeller::TRect< T >::IntersectsWithRect ( const TRect< T > & o ) const

inlineconstexpr

Definition at line 328 of file rect.h.

                                                                         {
     return Intersection(o).has_value();
   }

Referenced by impeller::testing::TEST().

◆ IsEmpty()

template<class T >

constexpr bool impeller::TRect< T >::IsEmpty ( ) const

inlineconstexpr

Returns true if either of the width or height are 0, negative, or NaN.

Definition at line 138 of file rect.h.

138 { return size.IsEmpty(); }

Referenced by impeller::Canvas::DrawImageRect(), impeller::NinePatchConverter::DrawNinePatch(), impeller::TRect< Scalar >::GetNormalizingTransform(), and impeller::TextureContents::Render().

◆ IsMaximum()

template<class T >

constexpr bool impeller::TRect< T >::IsMaximum ( ) const

inlineconstexpr

Definition at line 143 of file rect.h.

                                                  {
     return *this == MakeMaximum();
   }

Referenced by impeller::TRect< Scalar >::GetBottom(), impeller::TRect< Scalar >::GetLeft(), impeller::TRect< Scalar >::GetRight(), and impeller::TRect< Scalar >::GetTop().

◆ IsSquare()

template<class T >

constexpr bool impeller::TRect< T >::IsSquare ( ) const

inlineconstexpr

Returns true if width and height are equal and neither is NaN.

Definition at line 141 of file rect.h.

141 { return size.IsSquare(); }

Referenced by impeller::Canvas::DrawOval(), and impeller::Tessellator::FilledEllipse().

◆ MakeLTRB()

template<class T >

constexpr static TRect impeller::TRect< T >::MakeLTRB	(	Type	left,
		Type	top,
		Type	right,
		Type	bottom
	)

inlinestaticconstexpr

Definition at line 27 of file rect.h.

                                                {
     return TRect(left, top, right - left, bottom - top);
   }

Referenced by impeller::TRect< Scalar >::Cutout(), impeller::TRect< Scalar >::GetPositive(), impeller::TRect< Scalar >::Intersection(), impeller::TRect< Scalar >::MakeMaximum(), impeller::TRect< Scalar >::MakePointBounds(), impeller::TRect< Scalar >::RoundOut(), and impeller::TRect< Scalar >::Union().

◆ MakeMaximum()

template<class T >

constexpr static TRect impeller::TRect< T >::MakeMaximum ( )

inlinestaticconstexpr

Definition at line 72 of file rect.h.

                                        {
     return TRect::MakeLTRB(-std::numeric_limits<Type>::infinity(),
                            -std::numeric_limits<Type>::infinity(),
                            std::numeric_limits<Type>::infinity(),
                            std::numeric_limits<Type>::infinity());
   }

Referenced by impeller::TRect< Scalar >::IsMaximum().

◆ MakeOriginSize()

template<class T >

constexpr static TRect impeller::TRect< T >::MakeOriginSize	(	const TPoint< Type > &	origin,
		const TSize< Type > &	size
	)

inlinestaticconstexpr

Definition at line 38 of file rect.h.

                                                                  {
     return TRect(origin, size);
   }

◆ MakePointBounds() [1/2]

template<class T >

template<typename PointIter >

constexpr static std::optional<TRect> impeller::TRect< T >::MakePointBounds	(	const PointIter	first,
		const PointIter	last
	)

inlinestaticconstexpr

Definition at line 54 of file rect.h.

                                                                               {
     if (first == last) {
       return std::nullopt;
     }
     auto left = first->x;
     auto top = first->y;
     auto right = first->x;
     auto bottom = first->y;
     for (auto it = first + 1; it < last; ++it) {
       left = std::min(left, it->x);
       top = std::min(top, it->y);
       right = std::max(right, it->x);
       bottom = std::max(bottom, it->y);
     }
     return TRect::MakeLTRB(left, top, right, bottom);
   }

◆ MakePointBounds() [2/2]

template<class T >

template<typename U >

constexpr static std::optional<TRect> impeller::TRect< T >::MakePointBounds ( const U & value )

inlinestaticconstexpr

Definition at line 49 of file rect.h.

                                                                       {
     return MakePointBounds(value.begin(), value.end());
   }

Referenced by impeller::TRect< Scalar >::MakePointBounds(), and impeller::TRect< Scalar >::TransformBounds().

◆ MakeSize()

template<class T >

template<class U >

constexpr static TRect impeller::TRect< T >::MakeSize ( const TSize< U > & size )

inlinestaticconstexpr

Definition at line 44 of file rect.h.

                                                         {
     return TRect(0.0, 0.0, size.width, size.height);
   }

◆ MakeXYWH()

template<class T >

constexpr static TRect impeller::TRect< T >::MakeXYWH	(	Type	x,
		Type	y,
		Type	width,
		Type	height
	)

inlinestaticconstexpr

Definition at line 34 of file rect.h.

                                                                            {
     return TRect(x, y, width, height);
   }

◆ operator*() [1/2]

template<class T >

constexpr TRect impeller::TRect< T >::operator* ( const TRect< T > & r ) const

inlineconstexpr

Definition at line 99 of file rect.h.

                                                                 {
     return TRect({origin.x * r.origin.x, origin.y * r.origin.y},
                  {size.width * r.size.width, size.height * r.size.height});
   }

◆ operator*() [2/2]

template<class T >

constexpr TRect impeller::TRect< T >::operator* ( Type scale ) const

inlineconstexpr

Definition at line 95 of file rect.h.

                                                             {
     return Scale(scale);
   }

◆ operator+()

template<class T >

constexpr TRect impeller::TRect< T >::operator+ ( const TRect< T > & r ) const

inlineconstexpr

Definition at line 85 of file rect.h.

                                                                 {
     return TRect({origin.x + r.origin.x, origin.y + r.origin.y},
                  {size.width + r.size.width, size.height + r.size.height});
   }

◆ operator-()

template<class T >

constexpr TRect impeller::TRect< T >::operator- ( const TRect< T > & r ) const

inlineconstexpr

Definition at line 90 of file rect.h.

                                                                 {
     return TRect({origin.x - r.origin.x, origin.y - r.origin.y},
                  {size.width - r.size.width, size.height - r.size.height});
   }

◆ operator==()

template<class T >

constexpr bool impeller::TRect< T >::operator== ( const TRect< T > & r ) const

inlineconstexpr

Definition at line 104 of file rect.h.

                                                                 {
     return origin == r.origin && size == r.size;
   }

◆ Project()

template<class T >

constexpr TRect<T> impeller::TRect< T >::Project ( TRect< T > source ) const

inlineconstexpr

Returns a new rectangle that represents the projection of the source rectangle onto this rectangle. In other words, the source rectangle is redefined in terms of the corrdinate space of this rectangle.

Definition at line 424 of file rect.h.

                                                                   {
     return source.Shift(-origin).Scale(
         TSize<T>(1.0 / static_cast<Scalar>(size.width),
                  1.0 / static_cast<Scalar>(size.height)));
   }

Referenced by impeller::TextureContents::Render().

◆ RoundOut()

template<class T >

constexpr static TRect impeller::TRect< T >::RoundOut ( const TRect< T > & r )

inlinestaticconstexpr

Definition at line 430 of file rect.h.

                                                                 {
     return TRect::MakeLTRB(floor(r.GetLeft()), floor(r.GetTop()),
                            ceil(r.GetRight()), ceil(r.GetBottom()));
   }

◆ Scale() [1/4]

template<class T >

constexpr TRect impeller::TRect< T >::Scale ( TPoint< T > scale ) const

inlineconstexpr

Definition at line 118 of file rect.h.

                                                              {
     return TRect({origin.x * scale.x, origin.y * scale.y},
                  {size.width * scale.x, size.height * scale.y});
   }

◆ Scale() [2/4]

template<class T >

constexpr TRect impeller::TRect< T >::Scale ( TSize< T > scale ) const

inlineconstexpr

Definition at line 123 of file rect.h.

                                                             {
     return Scale(TPoint<T>(scale));
   }

◆ Scale() [3/4]

template<class T >

constexpr TRect impeller::TRect< T >::Scale ( Type scale ) const

inlineconstexpr

Definition at line 108 of file rect.h.

                                                         {
     return TRect({origin.x * scale, origin.y * scale},
                  {size.width * scale, size.height * scale});
   }

Referenced by ImGui_ImplImpeller_RenderDrawData(), impeller::MakeTextFrameFromTextBlobSkia(), impeller::TRect< Scalar >::operator*(), impeller::TRect< Scalar >::Scale(), and impeller::testing::TEST().

◆ Scale() [4/4]

template<class T >

constexpr TRect impeller::TRect< T >::Scale	(	Type	scale_x,
		Type	scale_y
	)		const

inlineconstexpr

Definition at line 113 of file rect.h.

                                                                         {
     return TRect({origin.x * scale_x, origin.y * scale_y},
                  {size.width * scale_x, size.height * scale_y});
   }

◆ Shift()

template<class T >

constexpr TRect<T> impeller::TRect< T >::Shift ( TPoint< T > offset ) const

inlineconstexpr

Returns a new rectangle translated by the given offset.

Definition at line 366 of file rect.h.

                                                                  {
     return TRect(origin.x + offset.x, origin.y + offset.y, size.width,
                  size.height);
   }

Referenced by impeller::TRect< Scalar >::Project(), and impeller::testing::TEST_P().

◆ TransformBounds()

template<class T >

constexpr TRect impeller::TRect< T >::TransformBounds ( const Matrix & transform ) const

inlineconstexpr

Creates a new bounding box that contains this transformed rectangle.

Definition at line 264 of file rect.h.

                                                                                {
     auto points = GetTransformedPoints(transform);
     auto bounds = TRect::MakePointBounds(points.begin(), points.end());
     if (bounds.has_value()) {
       return bounds.value();
     }
     FML_UNREACHABLE();
   }

◆ Union() [1/4]

template<class T >

constexpr static std::optional<TRect> impeller::TRect< T >::Union	(	const std::optional< TRect< T > >	a,
		const std::optional< TRect< T > >	b
	)

inlinestaticconstexpr

Definition at line 447 of file rect.h.

                                   {
     return a.has_value() ? Union(a.value(), b) : b;
   }

◆ Union() [2/4]

template<class T >

constexpr static std::optional<TRect> impeller::TRect< T >::Union	(	const std::optional< TRect< T > >	a,
		const TRect< T > &	b
	)

inlinestaticconstexpr

Definition at line 441 of file rect.h.

                       {
     return Union(b, a);
   }

◆ Union() [3/4]

template<class T >

constexpr static std::optional<TRect> impeller::TRect< T >::Union	(	const TRect< T > &	a,
		const std::optional< TRect< T > >	b
	)

inlinestaticconstexpr

Definition at line 435 of file rect.h.

                                   {
     return b.has_value() ? a.Union(b.value()) : a;
   }

◆ Union() [4/4]

template<class T >

constexpr TRect impeller::TRect< T >::Union ( const TRect< T > & o ) const

inlineconstexpr

Definition at line 302 of file rect.h.

                                                             {
     auto this_ltrb = GetLTRB();
     auto other_ltrb = o.GetLTRB();
     return TRect::MakeLTRB(std::min(this_ltrb[0], other_ltrb[0]),  //
                            std::min(this_ltrb[1], other_ltrb[1]),  //
                            std::max(this_ltrb[2], other_ltrb[2]),  //
                            std::max(this_ltrb[3], other_ltrb[3])   //
     );
   }

Referenced by impeller::testing::TEST(), and impeller::TRect< Scalar >::Union().

The documentation for this struct was generated from the following file:

impeller/geometry/rect.h

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

template<class T> struct impeller::TRect< T >

Member Typedef Documentation

◆ Type

Constructor & Destructor Documentation

◆ TRect() [1/2]

◆ TRect() [2/2]

Member Function Documentation

◆ Area()

◆ Contains() [1/2]

◆ Contains() [2/2]

◆ Cutout()

◆ Expand() [1/5]

◆ Expand() [2/5]

◆ Expand() [3/5]

◆ Expand() [4/5]

◆ Expand() [5/5]

◆ GetBottom()

◆ GetCenter()

◆ GetHeight()

◆ GetLeft()

◆ GetLeftBottom()

◆ GetLeftTop()

◆ GetLTRB()

◆ GetNormalizingTransform()

◆ GetOrigin()

◆ GetPoints()

◆ GetPositive()

◆ GetRight()

◆ GetRightBottom()

◆ GetRightTop()

◆ GetSize()

◆ GetTop()

◆ GetTransformedPoints()

◆ GetWidth()

◆ GetX()

◆ GetXYWH()

◆ GetY()

◆ Intersection() [1/4]

◆ Intersection() [2/4]

◆ Intersection() [3/4]

◆ Intersection() [4/4]

◆ IntersectsWithRect()

◆ IsEmpty()

◆ IsMaximum()

◆ IsSquare()

◆ MakeLTRB()

◆ MakeMaximum()

◆ MakeOriginSize()

◆ MakePointBounds() [1/2]

◆ MakePointBounds() [2/2]

◆ MakeSize()

◆ MakeXYWH()

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator+()

◆ operator-()

◆ operator==()

◆ Project()

◆ RoundOut()

◆ Scale() [1/4]

◆ Scale() [2/4]

◆ Scale() [3/4]

◆ Scale() [4/4]

◆ Shift()

◆ TransformBounds()

◆ Union() [1/4]

◆ Union() [2/4]

◆ Union() [3/4]

◆ Union() [4/4]

template<class T>
struct impeller::TRect< T >