git subrepo clone (merge) https://github.com/HarbourMasters/otrgui.git OTRGui

subrepo:
  subdir:   "OTRGui"
  merged:   "a6066a251"
upstream:
  origin:   "https://github.com/HarbourMasters/otrgui.git"
  branch:   "master"
  commit:   "a6066a251"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

OTRGui/libs/raylib/examples/models/models_heightmap.c

@@ -0,0 +1,82 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - Heightmap loading and drawing
+*
+*   This example has been created using raylib 1.8 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - heightmap loading and drawing");
+
+    // Define our custom camera to look into our 3d world
+    Camera camera = { { 18.0f, 18.0f, 18.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f, 0 };
+
+    Image image = LoadImage("resources/heightmap.png");             // Load heightmap image (RAM)
+    Texture2D texture = LoadTextureFromImage(image);                // Convert image to texture (VRAM)
+
+    Mesh mesh = GenMeshHeightmap(image, (Vector3){ 16, 8, 16 });    // Generate heightmap mesh (RAM and VRAM)
+    Model model = LoadModelFromMesh(mesh);                          // Load model from generated mesh
+
+    model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture;         // Set map diffuse texture
+    Vector3 mapPosition = { -8.0f, 0.0f, -8.0f };                   // Define model position
+
+    UnloadImage(image);                     // Unload heightmap image from RAM, already uploaded to VRAM
+
+    SetCameraMode(camera, CAMERA_ORBITAL);  // Set an orbital camera mode
+
+    SetTargetFPS(60);                       // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())            // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateCamera(&camera);              // Update camera
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+
+                DrawModel(model, mapPosition, 1.0f, RED);
+
+                DrawGrid(20, 1.0f);
+
+            EndMode3D();
+
+            DrawTexture(texture, screenWidth - texture.width - 20, 20, WHITE);
+            DrawRectangleLines(screenWidth - texture.width - 20, 20, texture.width, texture.height, GREEN);
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);     // Unload texture
+    UnloadModel(model);         // Unload model
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}