Update/merge examples back into main repo (#192)

Examples/Text/FontLoading.cs

@@ -0,0 +1,102 @@
+/*******************************************************************************************
+*
+*   raylib [text] example - Font loading
+*
+*   raylib can load fonts from multiple file formats:
+*
+*     - TTF/OTF > Sprite font atlas is generated on loading, user can configure
+*                 some of the generation parameters (size, characters to include)
+*     - BMFonts > Angel code font fileformat, sprite font image must be provided
+*                 together with the .fnt file, font generation cna not be configured
+*     - XNA Spritefont > Sprite font image, following XNA Spritefont conventions,
+*                 Characters in image must follow some spacing and order rules
+*
+*   This example has been created using raylib 2.6 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2016-2019 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+using System.Numerics;
+using static Raylib_cs.Raylib;
+
+namespace Examples.Text;
+
+public class FontLoading
+{
+    public static int Main()
+    {
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        const int screenWidth = 800;
+        const int screenHeight = 450;
+
+        InitWindow(screenWidth, screenHeight, "raylib [text] example - font loading");
+
+        // Define characters to draw
+        // NOTE: raylib supports UTF-8 encoding, following list is actually codified as UTF8 internally
+        string msg = "!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHI\nJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmn\nopqrstuvwxyz{|}~¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓ\nÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷\nøùúûüýþÿ";
+
+        // NOTE: Textures/Fonts MUST be loaded after Window initialization (OpenGL context is required)
+
+        // BMFont (AngelCode) : Font data and image atlas have been generated using external program
+        Font fontBm = LoadFont("resources/fonts/pixantiqua.fnt");
+
+        // TTF font : Font data and atlas are generated directly from TTF
+        // NOTE: We define a font base size of 32 pixels tall and up-to 250 characters
+        Font fontTtf = LoadFontEx("resources/fonts/pixantiqua.ttf", 32, null, 250);
+
+        bool useTtf = false;
+
+        SetTargetFPS(60);
+        //--------------------------------------------------------------------------------------
+
+        // Main game loop
+        while (!WindowShouldClose())
+        {
+            // Update
+            //----------------------------------------------------------------------------------
+            if (IsKeyDown(KeyboardKey.KEY_SPACE))
+            {
+                useTtf = true;
+            }
+            else
+            {
+                useTtf = false;
+            }
+            //----------------------------------------------------------------------------------
+
+            // Draw
+            //----------------------------------------------------------------------------------
+            BeginDrawing();
+            ClearBackground(Color.RAYWHITE);
+
+            DrawText("Hold SPACE to use TTF generated font", 20, 20, 20, Color.LIGHTGRAY);
+
+            if (!useTtf)
+            {
+                DrawTextEx(fontBm, msg, new Vector2(20.0f, 100.0f), fontBm.BaseSize, 2, Color.MAROON);
+                DrawText("Using BMFont (Angelcode) imported", 20, GetScreenHeight() - 30, 20, Color.GRAY);
+            }
+            else
+            {
+                DrawTextEx(fontTtf, msg, new Vector2(20.0f, 100.0f), fontTtf.BaseSize, 2, Color.LIME);
+                DrawText("Using TTF font generated", 20, GetScreenHeight() - 30, 20, Color.GRAY);
+            }
+
+            EndDrawing();
+            //----------------------------------------------------------------------------------
+        }
+
+        // De-Initialization
+        //--------------------------------------------------------------------------------------
+        UnloadFont(fontBm);
+        UnloadFont(fontTtf);
+
+        CloseWindow();
+        //--------------------------------------------------------------------------------------
+
+        return 0;
+    }
+}