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added TextureExtensions

This commit is contained in:
Ellpeck 2020-05-25 22:01:41 +02:00
parent 915506d8d1
commit dce6499a0c
2 changed files with 105 additions and 2 deletions

View file

@ -0,0 +1,98 @@
using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
namespace MLEM.Extensions {
/// <summary>
/// A set of extensions for dealing with <see cref="Texture2D"/>
/// </summary>
public static class TextureExtensions {
/// <summary>
/// Returns a new instance of <see cref="TextureData"/> which allows easily managing a texture's data with texture coordinates rather than indices.
/// </summary>
/// <param name="texture">The texture whose data to get</param>
/// <returns>The texture's data</returns>
public static TextureData GetTextureData(this Texture2D texture) {
return new TextureData(texture);
}
/// <summary>
/// A struct that represents the data of a texture, accessed through <see cref="TextureExtensions.GetTextureData"/>.
/// </summary>
public struct TextureData {
private readonly Texture2D texture;
private readonly Color[] data;
/// <summary>
/// Returns the color at the given x,y position of the texture, where 0,0 represents the bottom left.
/// </summary>
/// <param name="x">The x coordinate of the texture location</param>
/// <param name="y">The y coordinate of the texture location</param>
public Color this[int x, int y] {
get => this.data[this.ToIndex(x, y)];
set => this.data[this.ToIndex(x, y)] = value;
}
/// <inheritdoc cref="this[int,int]"/>
public Color this[Point point] {
get => this[point.X, point.Y];
set => this[point.X, point.Y] = value;
}
/// <summary>
/// Creates a new texture data instance for the given texture.
/// Note that this can more easily be invoked using <see cref="TextureExtensions.GetTextureData"/>.
/// </summary>
/// <param name="texture">The texture whose data to get</param>
public TextureData(Texture2D texture) {
this.texture = texture;
this.data = new Color[texture.Width * texture.Height];
this.texture.GetData(this.data);
}
/// <summary>
/// Stores this texture data back into the underlying texture
/// </summary>
public void Store() {
this.texture.SetData(this.data);
}
/// <summary>
/// Converts the given x,y texture coordinate to the corresponding index in the <see cref="Texture2D.GetData{T}(T[])"/> array.
/// </summary>
/// <param name="x">The x coordinate</param>
/// <param name="y">The y coordinate</param>
/// <returns>The corresponding texture array index</returns>
/// <exception cref="ArgumentException">If the given coordinate is out of bounds</exception>
public int ToIndex(int x, int y) {
if (!this.IsInBounds(x, y))
throw new ArgumentException();
return y * this.texture.Width + x;
}
/// <summary>
/// Converts the given index from the <see cref="Texture2D.GetData{T}(T[])"/> array into the corresponding x,y texture coordinate.
/// </summary>
/// <param name="index">The texture array index</param>
/// <returns>The corresponding texture coordinate</returns>
/// <exception cref="ArgumentException">If the given index is out of bounds</exception>
public Point FromIndex(int index) {
if (index < 0 || index >= this.data.Length)
throw new ArgumentException();
return new Point(index % this.texture.Width, index / this.texture.Width);
}
/// <summary>
/// Checks if the given x,y texture coordinates is within the bounds of the underlying texture.
/// </summary>
/// <param name="x">The x coordinate</param>
/// <param name="y">The y coordinate</param>
/// <returns>Whether the given coordinate is within bounds of the underlying texture</returns>
public bool IsInBounds(int x, int y) {
return x >= 0 && y >= 0 && x < this.texture.Width && y < this.texture.Height;
}
}
}
}

View file

@ -62,6 +62,11 @@ namespace Sandbox {
};
var tex = this.rawContent.Load<Texture2D>("Textures/Test");
var data = tex.GetTextureData();
data[1, 9] = Color.Pink;
data[data.FromIndex(data.ToIndex(25, 9))] = Color.Yellow;
data.Store();
//var font = new GenericSpriteFont(LoadContent<SpriteFont>("Fonts/TestFont"));
var font = new GenericBitmapFont(LoadContent<BitmapFont>("Fonts/Regular"));
this.UiSystem.Style = new UntexturedStyle(this.SpriteBatch) {
@ -126,14 +131,14 @@ namespace Sandbox {
this.tokenized = formatter.Tokenize(font, strg);
this.tokenized.Split(font, 400, 5);
this.OnDraw += (g, time) => {
/*this.OnDraw += (g, time) => {
this.SpriteBatch.Begin(samplerState: SamplerState.PointClamp);
this.SpriteBatch.FillRectangle(new RectangleF(400, 20, 400, 1000), Color.Green);
font.DrawString(this.SpriteBatch, this.tokenized.DisplayString, new Vector2(400, 20), Color.White * 0.25F, 0, Vector2.Zero, 5, SpriteEffects.None, 0);
this.tokenized.Draw(time, this.SpriteBatch, new Vector2(400, 20), font, Color.White, 5, 0);
this.SpriteBatch.DrawGrid(new Vector2(30, 30), new Vector2(40, 60), new Point(10, 5), Color.Yellow, 3);
this.SpriteBatch.End();
};
};*/
this.OnUpdate += (g, time) => {
if (this.InputHandler.IsPressed(Keys.W)) {
this.tokenized = formatter.Tokenize(font, strg);