Add textures srcrec dstrec example

examples/README.md

@@ -95,4 +95,5 @@ Examples using raylib textures functionality, including image/textures loading/g
 | ## | example                                                                    | image  | difficulty<br>level | version<br>created | last version<br>updated | original<br>developer |
 |----|----------------------------------------------------------------------------|--------|:-------------------:|:------------------:|:------------------:|:----------|
 | 47 | [textures_logo_raylib](textures/textures_logo_raylib.rb)                   | <img src="textures/textures_logo_raylib.png" alt="textures_logo_raylib" width="80"> | ⭐️☆☆☆ | 1.0 | 1.0 | [Ray](https://github.com/raysan5) |
+| 48 | [textures_srcrec_dstrec](textures/textures_srcrec_dstrec.rb)               | <img src="textures/textures_srcrec_dstrec.png" alt="textures_srcrec_dstrec" width="80"> | ⭐️⭐️⭐️☆ | 1.3 | 1.3 | [Ray](https://github.com/raysan5) |
 | 58 | [textures_background_scrolling](textures/textures_background_scrolling.rb) | <img src="textures/textures_background_scrolling.png" alt="textures_background_scrolling" width="80"> | ⭐️☆☆☆ | 2.0 | 2.5 | [Ray](https://github.com/raysan5) |

examples/textures/textures_srcrec_dstrec.rb

@@ -0,0 +1,75 @@
+# ******************************************************************************************
+#
+#   raylib [textures] example - Texture source and destination rectangles
+#
+#   Example originally created with raylib 1.3, last time updated with raylib 1.3
+#
+#   Example ported to Ruby by Wilson Silva (@wilsonsilva). Works with Raylib 4.5
+#
+#   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+#   BSD-like license that allows static linking with closed source software
+#
+#   Copyright (c) 2015-2023 Ramon Santamaria (@raysan5)
+#
+# ******************************************************************************************
+
+require 'bundler/setup'
+require 'raylib'
+
+# Initialization
+# --------------------------------------------------------------------------------------
+SCREEN_WIDTH = 800
+SCREEN_HEIGHT = 450
+
+Raylib.init_window(SCREEN_WIDTH, SCREEN_HEIGHT, 'raylib [textures] examples - texture source and destination rectangles')
+
+# NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+scarfy = Raylib.load_texture(File.join(__dir__, 'resources/scarfy.png')) # Texture loading
+
+frame_width = scarfy.width / 6
+frame_height = scarfy.height
+
+# Source rectangle (part of the texture to use for drawing)
+source_rec = Raylib::Rectangle.create(0.0, 0.0, frame_width.to_f, frame_height.to_f)
+
+# Destination rectangle (screen rectangle where drawing part of texture)
+dest_rec = Raylib::Rectangle.create(SCREEN_WIDTH / 2.0, SCREEN_HEIGHT / 2.0, frame_width * 2.0, frame_height * 2.0)
+
+# Origin of the texture (rotation/scale point), it's relative to destination rectangle size
+origin = Raylib::Vector2.create(frame_width.to_f, frame_height.to_f)
+
+rotation = 0
+
+Raylib.set_target_fps(60)
+# --------------------------------------------------------------------------------------
+
+# Main game loop
+until Raylib.window_should_close # Detect window close button or ESC key
+  # Update
+  # ----------------------------------------------------------------------------------
+  rotation += 1
+  # ----------------------------------------------------------------------------------
+
+  # Draw
+  # ----------------------------------------------------------------------------------
+  Raylib.begin_drawing
+  Raylib.clear_background(Raylib::RAYWHITE)
+
+  # NOTE: Using draw_texture_pro() we can easily rotate and scale the part of the texture we draw
+  # source_rec defines the part of the texture we use for drawing
+  # dest_rec defines the rectangle where our texture part will fit (scaling it to fit)
+  # origin defines the point of the texture used as reference for rotation and scaling
+  # rotation defines the texture rotation (using origin as rotation point)
+  Raylib.draw_texture_pro(scarfy, source_rec, dest_rec, origin, rotation.to_f, Raylib::WHITE)
+  Raylib.draw_line(dest_rec.x.to_i, 0, dest_rec.x.to_i, SCREEN_HEIGHT, Raylib::GRAY)
+  Raylib.draw_line(0, dest_rec.y.to_i, SCREEN_WIDTH, dest_rec.y.to_i, Raylib::GRAY)
+  Raylib.draw_text('(c) Scarfy sprite by Eiden Marsal', SCREEN_WIDTH - 200, SCREEN_HEIGHT - 20, 10, Raylib::GRAY)
+  Raylib.end_drawing
+  # ----------------------------------------------------------------------------------
+end
+
+# De-Initialization
+# --------------------------------------------------------------------------------------
+Raylib.unload_texture(scarfy) # Texture unloading
+Raylib.close_window # Close window and OpenGL context
+# --------------------------------------------------------------------------------------