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examples/models/models_heightmap.c

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+/*******************************************************************************************
+*
+*   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()
+[
+    # Initialization
+    #--------------------------------------------------------------------------------------
+    int screenWidth = 800
+    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 = [[ 18.0, 16.0, 18.0 ], [ 0.0, 0.0, 0.0 ], [ 0.0, 1.0, 0.0 ], 45.0, 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.material.maps[MAP_DIFFUSE].texture = texture             # Set map diffuse texture
+    Vector3 mapPosition = [ -8.0, 0.0, -8.0 ]                   # 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, 1.0, RED)
+
+                DrawGrid(20, 1.0)
+
+            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
+]