allow GetTokenUnderPos to work with rotation, origin and effects

Demos/TextFormattingDemo.cs

@@ -75,6 +75,10 @@ namespace Demos {
             var size = this.tokenizedText.GetArea(Vector2.Zero, this.Scale).Size;
             var pos = new Vector2(this.GraphicsDevice.Viewport.Width / 2, (this.GraphicsDevice.Viewport.Height - size.Y) / 2);
 
+            var rotation = this.transform ? 0.25F : 0;
+            var origin = this.transform ? new Vector2(size.X / this.Scale, 0) : Vector2.Zero;
+            var effects = this.transform ? SpriteEffects.FlipHorizontally : SpriteEffects.None;
+
             // draw bounds, which can be toggled with B in this demo
             if (this.drawBounds) {
                 var blank = this.SpriteBatch.GetBlankTexture();
@@ -86,13 +90,14 @@ namespace Demos {
             }
 
             // draw the text itself (start and end indices are optional)
-            this.tokenizedText.Draw(time, this.SpriteBatch, pos, this.font, Color.White, this.Scale, 0,
+            this.tokenizedText.Draw(time, this.SpriteBatch, pos, this.font, Color.White, this.Scale, 0, rotation, origin, effects, this.startIndex, this.endIndex);
-                this.transform ? 0.25F : 0,
-                this.transform ? new Vector2(size.X / this.Scale, 128) : Vector2.Zero,
-                this.transform ? SpriteEffects.FlipHorizontally : SpriteEffects.None,
-                this.startIndex, this.endIndex);
 
             this.SpriteBatch.End();
+
+            // an example of how to interact with the text
+            var hovered = this.tokenizedText.GetTokenUnderPos(pos, this.InputHandler.ViewportMousePosition.ToVector2(), this.Scale, this.font, rotation, origin, effects);
+            if (hovered != null)
+                Console.WriteLine($"Hovering \"{hovered.Substring}\"");
         }
 
         public override void Update(GameTime time) {

MLEM/Formatting/Token.cs

@@ -149,6 +149,11 @@ namespace MLEM.Formatting {
             font.DrawCharacter(batch, codePoint, character, finalPos, color, rotation, scale, effects, depth);
         }
 
+        /// <inheritdoc cref="GetArea(Microsoft.Xna.Framework.Vector2,Microsoft.Xna.Framework.Vector2)"/>
+        public IEnumerable<RectangleF> GetArea(Vector2 stringPos, float scale) {
+            return this.GetArea(stringPos, new Vector2(scale));
+        }
+
         /// <summary>
         /// Gets a list of rectangles that encompass this token's area.
         /// This can be used to invoke events when the mouse is hovered over the token, for example.
@@ -156,7 +161,7 @@ namespace MLEM.Formatting {
         /// <param name="stringPos">The position that the string is drawn at</param>
         /// <param name="scale">The scale that the string is drawn at</param>
         /// <returns>A set of rectangles that this token contains</returns>
-        public IEnumerable<RectangleF> GetArea(Vector2 stringPos, float scale) {
+        public IEnumerable<RectangleF> GetArea(Vector2 stringPos, Vector2 scale) {
             return this.Area.Select(a => new RectangleF(stringPos + a.Location * scale, a.Size * scale));
         }
 

MLEM/Formatting/TokenizedString.cs

@@ -162,17 +162,30 @@ namespace MLEM.Formatting {
                 code.Update(time);
         }
 
+        /// <inheritdoc cref="GetTokenUnderPos(Microsoft.Xna.Framework.Vector2,Microsoft.Xna.Framework.Vector2,Microsoft.Xna.Framework.Vector2,MLEM.Font.GenericFont,float,Microsoft.Xna.Framework.Vector2,Microsoft.Xna.Framework.Graphics.SpriteEffects)"/>
+        public Token GetTokenUnderPos(Vector2 stringPos, Vector2 target, float scale, GenericFont font = null, float rotation = 0, Vector2 origin = default, SpriteEffects effects = SpriteEffects.None) {
+            return this.GetTokenUnderPos(stringPos, target, new Vector2(scale), font, rotation, origin, effects);
+        }
+
         /// <summary>
         /// Returns the token under the given position.
         /// This can be used for hovering effects when the mouse is over a token, etc.
         /// </summary>
-        /// <param name="stringPos">The position that the string is drawn at</param>
+        /// <param name="stringPos">The position that the string is drawn at.</param>
-        /// <param name="target">The position to use for checking the token</param>
+        /// <param name="target">The position to use for checking the token.</param>
-        /// <param name="scale">The scale that the string is drawn at</param>
+        /// <param name="scale">The scale that the string is drawn at.</param>
-        /// <returns>The token under the target position</returns>
+        /// <param name="font">The font that the string is being drawn with. If this is <see langword="null"/>, all following parameters are ignored.</param>
-        public Token GetTokenUnderPos(Vector2 stringPos, Vector2 target, float scale) {
+        /// <param name="rotation">The rotation that the string is being drawn with. If <paramref name="font"/> is <see langword="null"/>, this this is ignored.</param>
+        /// <param name="origin">The origin that the string is being drawn with. If <paramref name="font"/> is <see langword="null"/>, this this is ignored.</param>
+        /// <param name="effects">The sprite effects that the string is being drawn with. If <paramref name="font"/> is <see langword="null"/>, this is ignored.</param>
+        /// <returns>The token under the target position</returns>^
+        public Token GetTokenUnderPos(Vector2 stringPos, Vector2 target, Vector2 scale, GenericFont font = null, float rotation = 0, Vector2 origin = default, SpriteEffects effects = SpriteEffects.None) {
+            if (font != null) {
+                var transform = font.CalculateStringTransform(stringPos, rotation, origin, scale, effects, this.area.Size);
+                target = Vector2.Transform(target, Matrix.Invert(transform));
+            }
             foreach (var token in this.Tokens) {
-                foreach (var rect in token.GetArea(stringPos, scale)) {
+                foreach (var rect in font != null ? token.GetArea(Vector2.Zero, 1) : token.GetArea(stringPos, scale)) {
                     if (rect.Contains(target))
                         return token;
                 }