493 lines
18 KiB
C#
493 lines
18 KiB
C#
// Copyright (c) Xenko contributors (https://xenko.com) and Silicon Studio Corp. (https://www.siliconstudio.co.jp)
|
|
// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
|
|
//
|
|
// Copyright (c) 2010-2013 SharpDX - Alexandre Mutel
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
using System;
|
|
using System.Globalization;
|
|
using System.Runtime.InteropServices;
|
|
using System.Runtime.Serialization;
|
|
|
|
namespace math
|
|
{
|
|
/// <summary>
|
|
/// Define a RectangleF.
|
|
/// </summary>
|
|
[DataContract( Name = "RectangleF")]
|
|
[DataStyle(DataStyle.Compact)]
|
|
[StructLayout(LayoutKind.Sequential, Pack = 4)]
|
|
public struct RectangleF : IEquatable<RectangleF>
|
|
{
|
|
/// <summary>
|
|
/// An empty rectangle
|
|
/// </summary>
|
|
public static readonly RectangleF Empty;
|
|
|
|
static RectangleF()
|
|
{
|
|
Empty = new RectangleF();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="RectangleF"/> struct.
|
|
/// </summary>
|
|
/// <param name="x">The left.</param>
|
|
/// <param name="y">The top.</param>
|
|
/// <param name="width">The width.</param>
|
|
/// <param name="height">The height.</param>
|
|
public RectangleF(float x, float y, float width, float height)
|
|
{
|
|
this.X = x;
|
|
this.Y = y;
|
|
this.Width = width;
|
|
this.Height = height;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets the X position of the left edge.
|
|
/// </summary>
|
|
/// <value>The left.</value>
|
|
[DataMemberIgnore]
|
|
public float Left
|
|
{
|
|
get { return X; }
|
|
set { X = value; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets the top.
|
|
/// </summary>
|
|
/// <value>The top.</value>
|
|
[DataMemberIgnore]
|
|
public float Top
|
|
{
|
|
get { return Y; }
|
|
set { Y = value; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the right.
|
|
/// </summary>
|
|
/// <value>The right.</value>
|
|
[DataMemberIgnore]
|
|
public float Right
|
|
{
|
|
get
|
|
{
|
|
return X + Width;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the bottom.
|
|
/// </summary>
|
|
/// <value>The bottom.</value>
|
|
public float Bottom
|
|
{
|
|
get
|
|
{
|
|
return Y + Height;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets the X position.
|
|
/// </summary>
|
|
/// <value>The X position.</value>
|
|
/// <userdoc>The beginning of the rectangle along the Ox axis.</userdoc>
|
|
[DataMember( Order = 0 )]
|
|
public float X;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the Y position.
|
|
/// </summary>
|
|
/// <value>The Y position.</value>
|
|
/// <userdoc>The beginning of the rectangle along the Oy axis.</userdoc>
|
|
[DataMember( Order = 1 )]
|
|
public float Y;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the width.
|
|
/// </summary>
|
|
/// <value>The width.</value>
|
|
/// <userdoc>The width of the rectangle.</userdoc>
|
|
[DataMember( Order = 2 )]
|
|
public float Width;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the height.
|
|
/// </summary>
|
|
/// <value>The height.</value>
|
|
/// <userdoc>The height of the rectangle.</userdoc>
|
|
[DataMember( Order = 3 )]
|
|
public float Height;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the location.
|
|
/// </summary>
|
|
/// <value>
|
|
/// The location.
|
|
/// </value>
|
|
[DataMemberIgnore]
|
|
public Vec2 Location
|
|
{
|
|
get
|
|
{
|
|
return new Vec2(X, Y);
|
|
}
|
|
set
|
|
{
|
|
X = value.X;
|
|
Y = value.Y;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the Point that specifies the center of the rectangle.
|
|
/// </summary>
|
|
/// <value>
|
|
/// The center.
|
|
/// </value>
|
|
[DataMemberIgnore]
|
|
public Vec2 Center
|
|
{
|
|
get
|
|
{
|
|
return new Vec2(X + (Width / 2), Y + (Height / 2));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a value that indicates whether the rectangle is empty.
|
|
/// </summary>
|
|
/// <value>
|
|
/// <c>true</c> if [is empty]; otherwise, <c>false</c>.
|
|
/// </value>
|
|
public bool IsEmpty
|
|
{
|
|
get
|
|
{
|
|
return (Width == 0.0f) && (Height == 0.0f) && (X == 0.0f) && (Y == 0.0f);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets or sets the size of the rectangle.
|
|
/// </summary>
|
|
/// <value>The size of the rectangle.</value>
|
|
[DataMemberIgnore]
|
|
public Size2F Size
|
|
{
|
|
get
|
|
{
|
|
return new Size2F(Width, Height);
|
|
}
|
|
set
|
|
{
|
|
Width = value.Width;
|
|
Height = value.Height;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the position of the top-left corner of the rectangle.
|
|
/// </summary>
|
|
/// <value>The top-left corner of the rectangle.</value>
|
|
public Vec2 TopLeft { get { return new Vec2(X, Y); } }
|
|
|
|
/// <summary>
|
|
/// Gets the position of the top-right corner of the rectangle.
|
|
/// </summary>
|
|
/// <value>The top-right corner of the rectangle.</value>
|
|
public Vec2 TopRight { get { return new Vec2(Right, Y); } }
|
|
|
|
/// <summary>
|
|
/// Gets the position of the bottom-left corner of the rectangle.
|
|
/// </summary>
|
|
/// <value>The bottom-left corner of the rectangle.</value>
|
|
public Vec2 BottomLeft { get { return new Vec2(X, Bottom); } }
|
|
|
|
/// <summary>
|
|
/// Gets the position of the bottom-right corner of the rectangle.
|
|
/// </summary>
|
|
/// <value>The bottom-right corner of the rectangle.</value>
|
|
public Vec2 BottomRight { get { return new Vec2(Right, Bottom); } }
|
|
|
|
/// <summary>Changes the position of the rectangle.</summary>
|
|
/// <param name="amount">The values to adjust the position of the rectangle by.</param>
|
|
public void Offset(Point amount)
|
|
{
|
|
Offset(amount.X, amount.Y);
|
|
}
|
|
|
|
/// <summary>Changes the position of the rectangle.</summary>
|
|
/// <param name="amount">The values to adjust the position of the rectangle by.</param>
|
|
public void Offset(Vec2 amount)
|
|
{
|
|
Offset(amount.X, amount.Y);
|
|
}
|
|
|
|
/// <summary>Changes the position of the rectangle.</summary>
|
|
/// <param name="offsetX">Change in the x-position.</param>
|
|
/// <param name="offsetY">Change in the y-position.</param>
|
|
public void Offset(float offsetX, float offsetY)
|
|
{
|
|
X += offsetX;
|
|
Y += offsetY;
|
|
}
|
|
|
|
/// <summary>Pushes the edges of the rectangle out by the horizontal and vertical values specified.</summary>
|
|
/// <param name="horizontalAmount">Value to push the sides out by.</param>
|
|
/// <param name="verticalAmount">Value to push the top and bottom out by.</param>
|
|
public void Inflate(float horizontalAmount, float verticalAmount)
|
|
{
|
|
X -= horizontalAmount;
|
|
Y -= verticalAmount;
|
|
Width += horizontalAmount * 2;
|
|
Height += verticalAmount * 2;
|
|
}
|
|
|
|
/// <summary>Determines whether this rectangle contains a specified Point.</summary>
|
|
/// <param name="value">The Point to evaluate.</param>
|
|
/// <param name="result">[OutAttribute] true if the specified Point is contained within this rectangle; false otherwise.</param>
|
|
public void Contains(ref Vec2 value, out bool result)
|
|
{
|
|
result = (X <= value.X) && (value.X < Right) && (Y <= value.Y) && (value.Y < Bottom);
|
|
}
|
|
|
|
/// <summary>Determines whether this rectangle entirely contains a specified rectangle.</summary>
|
|
/// <param name="value">The rectangle to evaluate.</param>
|
|
public bool Contains(Rectangle value)
|
|
{
|
|
return (X <= value.X) && (value.Right <= Right) && (Y <= value.Y) && (value.Bottom <= Bottom);
|
|
}
|
|
|
|
/// <summary>Determines whether this rectangle entirely contains a specified rectangle.</summary>
|
|
/// <param name="value">The rectangle to evaluate.</param>
|
|
/// <param name="result">[OutAttribute] On exit, is true if this rectangle entirely contains the specified rectangle, or false if not.</param>
|
|
public void Contains(ref RectangleF value, out bool result)
|
|
{
|
|
result = (X <= value.X) && (value.Right <= Right) && (Y <= value.Y) && (value.Bottom <= Bottom);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks, if specified point is inside <see cref="RectangleF"/>.
|
|
/// </summary>
|
|
/// <param name="x">X point coordinate.</param>
|
|
/// <param name="y">Y point coordinate.</param>
|
|
/// <returns><c>true</c> if point is inside <see cref="RectangleF"/>, otherwise <c>false</c>.</returns>
|
|
public bool Contains(float x, float y)
|
|
{
|
|
return (x >= this.X && x <= Right && y >= this.Y && y <= Bottom);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks, if specified <see cref="Vec2"/> is inside <see cref="RectangleF"/>.
|
|
/// </summary>
|
|
/// <param name="vector2D">Coordinate <see cref="Vec2"/>.</param>
|
|
/// <returns><c>true</c> if <see cref="Vec2"/> is inside <see cref="RectangleF"/>, otherwise <c>false</c>.</returns>
|
|
public bool Contains(Vec2 vector2D)
|
|
{
|
|
return Contains(vector2D.X, vector2D.Y);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks, if specified <see cref="Int2"/> is inside <see cref="Rectangle"/>.
|
|
/// </summary>
|
|
/// <param name="int2">Coordinate <see cref="Int2"/>.</param>
|
|
/// <returns><c>true</c> if <see cref="Int2"/> is inside <see cref="Rectangle"/>, otherwise <c>false</c>.</returns>
|
|
public bool Contains(Int2 int2)
|
|
{
|
|
return Contains(int2.X, int2.Y);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks, if specified <see cref="Point"/> is inside <see cref="RectangleF"/>.
|
|
/// </summary>
|
|
/// <param name="point">Coordinate <see cref="Point"/>.</param>
|
|
/// <returns><c>true</c> if <see cref="Point"/> is inside <see cref="RectangleF"/>, otherwise <c>false</c>.</returns>
|
|
public bool Contains(Point point)
|
|
{
|
|
return Contains(point.X, point.Y);
|
|
}
|
|
|
|
/// <summary>Determines whether a specified rectangle intersects with this rectangle.</summary>
|
|
/// <param name="value">The rectangle to evaluate.</param>
|
|
public bool Intersects(RectangleF value)
|
|
{
|
|
bool result;
|
|
Intersects(ref value, out result);
|
|
return result;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether a specified rectangle intersects with this rectangle.
|
|
/// </summary>
|
|
/// <param name="value">The rectangle to evaluate</param>
|
|
/// <param name="result">[OutAttribute] true if the specified rectangle intersects with this one; false otherwise.</param>
|
|
public void Intersects(ref RectangleF value, out bool result)
|
|
{
|
|
result = (value.X < Right) && (X < value.Right) && (value.Y < Bottom) && (Y < value.Bottom);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a rectangle defining the area where one rectangle overlaps with another rectangle.
|
|
/// </summary>
|
|
/// <param name="value1">The first Rectangle to compare.</param>
|
|
/// <param name="value2">The second Rectangle to compare.</param>
|
|
/// <returns>The intersection rectangle.</returns>
|
|
public static RectangleF Intersect(RectangleF value1, RectangleF value2)
|
|
{
|
|
RectangleF result;
|
|
Intersect(ref value1, ref value2, out result);
|
|
return result;
|
|
}
|
|
|
|
/// <summary>Creates a rectangle defining the area where one rectangle overlaps with another rectangle.</summary>
|
|
/// <param name="value1">The first rectangle to compare.</param>
|
|
/// <param name="value2">The second rectangle to compare.</param>
|
|
/// <param name="result">[OutAttribute] The area where the two first parameters overlap.</param>
|
|
public static void Intersect(ref RectangleF value1, ref RectangleF value2, out RectangleF result)
|
|
{
|
|
float newLeft = (value1.X > value2.X) ? value1.X : value2.X;
|
|
float newTop = (value1.Y > value2.Y) ? value1.Y : value2.Y;
|
|
float newRight = (value1.Right < value2.Right) ? value1.Right : value2.Right;
|
|
float newBottom = (value1.Bottom < value2.Bottom) ? value1.Bottom : value2.Bottom;
|
|
if ((newRight > newLeft) && (newBottom > newTop))
|
|
{
|
|
result = new RectangleF(newLeft, newTop, newRight - newLeft, newBottom - newTop);
|
|
}
|
|
else
|
|
{
|
|
result = Empty;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a new rectangle that exactly contains two other rectangles.
|
|
/// </summary>
|
|
/// <param name="value1">The first rectangle to contain.</param>
|
|
/// <param name="value2">The second rectangle to contain.</param>
|
|
/// <returns>The union rectangle.</returns>
|
|
public static RectangleF Union(RectangleF value1, RectangleF value2)
|
|
{
|
|
RectangleF result;
|
|
Union(ref value1, ref value2, out result);
|
|
return result;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a new rectangle that exactly contains two other rectangles.
|
|
/// </summary>
|
|
/// <param name="value1">The first rectangle to contain.</param>
|
|
/// <param name="value2">The second rectangle to contain.</param>
|
|
/// <param name="result">[OutAttribute] The rectangle that must be the union of the first two rectangles.</param>
|
|
public static void Union(ref RectangleF value1, ref RectangleF value2, out RectangleF result)
|
|
{
|
|
var left = Math.Min(value1.Left, value2.Left);
|
|
var right = Math.Max(value1.Right, value2.Right);
|
|
var top = Math.Min(value1.Top, value2.Top);
|
|
var bottom = Math.Max(value1.Bottom, value2.Bottom);
|
|
result = new RectangleF(left, top, right - left, bottom - top);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether the specified <see cref="object"/> is equal to this instance.
|
|
/// </summary>
|
|
/// <param name="obj">The <see cref="object"/> to compare with this instance.</param>
|
|
/// <returns>
|
|
/// <c>true</c> if the specified <see cref="object"/> is equal to this instance; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
public override bool Equals(object obj)
|
|
{
|
|
if (ReferenceEquals(null, obj)) return false;
|
|
if (obj.GetType() != typeof(RectangleF)) return false;
|
|
return Equals((RectangleF)obj);
|
|
}
|
|
|
|
/// <inheritdoc/>
|
|
public bool Equals(RectangleF other)
|
|
{
|
|
return MathUtil.NearEqual(other.Left, Left) &&
|
|
MathUtil.NearEqual(other.Right, Right) &&
|
|
MathUtil.NearEqual(other.Top, Top) &&
|
|
MathUtil.NearEqual(other.Bottom, Bottom);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns a hash code for this instance.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.
|
|
/// </returns>
|
|
public override int GetHashCode()
|
|
{
|
|
unchecked
|
|
{
|
|
int result = X.GetHashCode();
|
|
result = (result * 397) ^ Y.GetHashCode();
|
|
result = (result * 397) ^ Width.GetHashCode();
|
|
result = (result * 397) ^ Height.GetHashCode();
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Implements the operator ==.
|
|
/// </summary>
|
|
/// <param name="left">The left.</param>
|
|
/// <param name="right">The right.</param>
|
|
/// <returns>The result of the operator.</returns>
|
|
public static bool operator ==(RectangleF left, RectangleF right)
|
|
{
|
|
return left.Equals(right);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Implements the operator !=.
|
|
/// </summary>
|
|
/// <param name="left">The left.</param>
|
|
/// <param name="right">The right.</param>
|
|
/// <returns>The result of the operator.</returns>
|
|
public static bool operator !=(RectangleF left, RectangleF right)
|
|
{
|
|
return !(left == right);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Performs an explicit conversion to <see cref="Rectangle"/> structure.
|
|
/// </summary>
|
|
/// <remarks>Performs direct float to int conversion, any fractional data is truncated.</remarks>
|
|
/// <param name="value">The source <see cref="RectangleF"/> value.</param>
|
|
/// <returns>A converted <see cref="Rectangle"/> structure.</returns>
|
|
public static explicit operator Rectangle(RectangleF value)
|
|
{
|
|
return new Rectangle((int)value.X, (int)value.Y, (int)value.Width, (int)value.Height);
|
|
}
|
|
|
|
/// <inheritdoc/>
|
|
public override string ToString()
|
|
{
|
|
return string.Format(CultureInfo.CurrentCulture, "X:{0} Y:{1} Width:{2} Height:{3}", X, Y, Width, Height);
|
|
}
|
|
}
|
|
}
|