New examples uploaded...

4 files changed, 591 insertions, 0 deletions

diff --git a/examples/src/models/models_material_pbr.c b/examples/src/models/models_material_pbr.c
new file mode 100644
index 0000000..9f57634
--- /dev/null
+++ b/examples/src/models/models_material_pbr.c
@@ -0,0 +1,195 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - PBR material
+*
+*   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) 2017 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+
+#define RLIGHTS_IMPLEMENTATION
+#include "rlights.h"
+
+#define CUBEMAP_SIZE         512        // Cubemap texture size
+#define IRRADIANCE_SIZE       32        // Irradiance texture size
+#define PREFILTERED_SIZE     256        // Prefiltered HDR environment texture size
+#define BRDF_SIZE            512        // BRDF LUT texture size
+
+// PBR material loading
+static Material LoadMaterialPBR(Color albedo, float metalness, float roughness);
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    SetConfigFlags(FLAG_MSAA_4X_HINT);  // Enable Multi Sampling Anti Aliasing 4x (if available)
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - pbr material");
+
+    // Define the camera to look into our 3d world
+    Camera camera = {{ 4.0f, 4.0f, 4.0f }, { 0.0f, 0.5f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f };
+
+    // Load model and PBR material
+    Model model = LoadModel("resources/pbr/trooper.obj");
+    model.material = LoadMaterialPBR((Color){ 255, 255, 255, 255 }, 1.0f, 1.0f);
+
+    // Define lights attributes
+    // NOTE: Shader is passed to every light on creation to define shader bindings internally
+    Light lights[MAX_LIGHTS] = { 
+        CreateLight(LIGHT_POINT, (Vector3){ LIGHT_DISTANCE, LIGHT_HEIGHT, 0.0f }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 255, 0, 0, 255 }, model.material.shader),
+        CreateLight(LIGHT_POINT, (Vector3){ 0.0f, LIGHT_HEIGHT, LIGHT_DISTANCE }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 0, 255, 0, 255 }, model.material.shader),
+        CreateLight(LIGHT_POINT, (Vector3){ -LIGHT_DISTANCE, LIGHT_HEIGHT, 0.0f }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 0, 0, 255, 255 }, model.material.shader),
+        CreateLight(LIGHT_DIRECTIONAL, (Vector3){ 0.0f, LIGHT_HEIGHT*2.0f, -LIGHT_DISTANCE }, (Vector3){ 0.0f, 0.0f, 0.0f }, (Color){ 255, 0, 255, 255 }, model.material.shader) 
+    };
+    
+    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
+        
+        // Send to material PBR shader camera view position
+        float cameraPos[3] = { camera.position.x, camera.position.y, camera.position.z };
+        SetShaderValue(model.material.shader, model.material.shader.locs[LOC_VECTOR_VIEW], cameraPos, 3);
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            Begin3dMode(camera);
+
+                DrawModel(model, Vector3Zero(), 1.0f, WHITE);
+                
+                DrawGrid(10, 1.0f);
+
+            End3dMode();
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadModel(model);         // Unload skybox model
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+
+// Load PBR material (Supports: ALBEDO, NORMAL, METALNESS, ROUGHNESS, AO, EMMISIVE, HEIGHT maps)
+// NOTE: PBR shader is loaded inside this function
+static Material LoadMaterialPBR(Color albedo, float metalness, float roughness)
+{
+    Material mat = { 0 };       // NOTE: All maps textures are set to { 0 }
+    
+    #define     PATH_PBR_VS     "resources/shaders/pbr.vs"      // Path to physically based rendering vertex shader
+    #define     PATH_PBR_FS     "resources/shaders/pbr.fs"      // Path to physically based rendering fragment shader
+   
+    mat.shader = LoadShader(PATH_PBR_VS, PATH_PBR_FS);
+    
+    // Get required locations points for PBR material
+    // NOTE: Those location names must be available and used in the shader code
+    mat.shader.locs[LOC_MAP_ALBEDO] = GetShaderLocation(mat.shader, "albedo.sampler");
+    mat.shader.locs[LOC_MAP_METALNESS] = GetShaderLocation(mat.shader, "metalness.sampler");
+    mat.shader.locs[LOC_MAP_NORMAL] = GetShaderLocation(mat.shader, "normals.sampler");
+    mat.shader.locs[LOC_MAP_ROUGHNESS] = GetShaderLocation(mat.shader, "roughness.sampler");
+    mat.shader.locs[LOC_MAP_OCCUSION] = GetShaderLocation(mat.shader, "occlusion.sampler");
+    //mat.shader.locs[LOC_MAP_EMISSION] = GetShaderLocation(mat.shader, "emission.sampler");
+    //mat.shader.locs[LOC_MAP_HEIGHT] = GetShaderLocation(mat.shader, "height.sampler");
+    mat.shader.locs[LOC_MAP_IRRADIANCE] = GetShaderLocation(mat.shader, "irradianceMap");
+    mat.shader.locs[LOC_MAP_PREFILTER] = GetShaderLocation(mat.shader, "prefilterMap");
+    mat.shader.locs[LOC_MAP_BRDF] = GetShaderLocation(mat.shader, "brdfLUT");
+
+    // Set view matrix location
+    mat.shader.locs[LOC_MATRIX_MODEL] = GetShaderLocation(mat.shader, "mMatrix");
+    mat.shader.locs[LOC_MATRIX_VIEW] = GetShaderLocation(mat.shader, "view");
+    mat.shader.locs[LOC_VECTOR_VIEW] = GetShaderLocation(mat.shader, "viewPos");
+    
+    // Set PBR standard maps
+    mat.maps[MAP_ALBEDO].texture = LoadTexture("resources/pbr/trooper_albedo.png");
+    mat.maps[MAP_NORMAL].texture = LoadTexture("resources/pbr/trooper_normals.png");
+    mat.maps[MAP_METALNESS].texture = LoadTexture("resources/pbr/trooper_metalness.png");
+    mat.maps[MAP_ROUGHNESS].texture = LoadTexture("resources/pbr/trooper_roughness.png");
+    mat.maps[MAP_OCCLUSION].texture = LoadTexture("resources/pbr/trooper_ao.png");
+    
+    // Set environment maps
+    #define     PATH_CUBEMAP_VS         "resources/shaders/cubemap.vs"          // Path to equirectangular to cubemap vertex shader
+    #define     PATH_CUBEMAP_FS         "resources/shaders/cubemap.fs"          // Path to equirectangular to cubemap fragment shader
+    #define     PATH_SKYBOX_VS          "resources/shaders/skybox.vs"           // Path to skybox vertex shader
+    #define     PATH_IRRADIANCE_FS      "resources/shaders/irradiance.fs"       // Path to irradiance (GI) calculation fragment shader
+    #define     PATH_PREFILTER_FS       "resources/shaders/prefilter.fs"        // Path to reflection prefilter calculation fragment shader
+    #define     PATH_BRDF_VS            "resources/shaders/brdf.vs"     // Path to bidirectional reflectance distribution function vertex shader 
+    #define     PATH_BRDF_FS            "resources/shaders/brdf.fs"     // Path to bidirectional reflectance distribution function fragment shader
+    
+    Shader shdrCubemap = LoadShader(PATH_CUBEMAP_VS, PATH_CUBEMAP_FS);
+    Shader shdrIrradiance = LoadShader(PATH_SKYBOX_VS, PATH_IRRADIANCE_FS);
+    Shader shdrPrefilter = LoadShader(PATH_SKYBOX_VS, PATH_PREFILTER_FS);
+    Shader shdrBRDF = LoadShader(PATH_BRDF_VS, PATH_BRDF_FS);
+    
+    // Setup required shader locations
+    SetShaderValuei(shdrCubemap, GetShaderLocation(shdrCubemap, "equirectangularMap"), (int[1]){ 0 }, 1);
+    SetShaderValuei(shdrIrradiance, GetShaderLocation(shdrIrradiance, "environmentMap"), (int[1]){ 0 }, 1);
+    SetShaderValuei(shdrPrefilter, GetShaderLocation(shdrPrefilter, "environmentMap"), (int[1]){ 0 }, 1);
+
+    Texture2D texHDR = LoadTexture("resources/pinetree.hdr");
+    Texture2D cubemap = GenTextureCubemap(shdrCubemap, texHDR, CUBEMAP_SIZE);
+    mat.maps[MAP_IRRADIANCE].texture = GenTextureIrradiance(shdrIrradiance, cubemap, IRRADIANCE_SIZE);
+    mat.maps[MAP_PREFILTER].texture = GenTexturePrefilter(shdrPrefilter, cubemap, PREFILTERED_SIZE);
+    mat.maps[MAP_BRDF].texture = GenTextureBRDF(shdrBRDF, cubemap, BRDF_SIZE);
+    UnloadTexture(cubemap);
+    UnloadTexture(texHDR);
+    
+    // Unload already used shaders (to create specific textures)
+    UnloadShader(shdrCubemap);
+    UnloadShader(shdrIrradiance);
+    UnloadShader(shdrPrefilter);
+    UnloadShader(shdrBRDF);
+    
+    // Set textures filtering for better quality
+    SetTextureFilter(mat.maps[MAP_ALBEDO].texture, FILTER_BILINEAR);
+    SetTextureFilter(mat.maps[MAP_NORMAL].texture, FILTER_BILINEAR);
+    SetTextureFilter(mat.maps[MAP_METALNESS].texture, FILTER_BILINEAR);
+    SetTextureFilter(mat.maps[MAP_ROUGHNESS].texture, FILTER_BILINEAR);
+    SetTextureFilter(mat.maps[MAP_OCCLUSION].texture, FILTER_BILINEAR);
+    
+    // Enable sample usage in shader for assigned textures
+    SetShaderValuei(mat.shader, GetShaderLocation(mat.shader, "albedo.useSampler"), (int[1]){ 1 }, 1);
+    SetShaderValuei(mat.shader, GetShaderLocation(mat.shader, "normals.useSampler"), (int[1]){ 1 }, 1);
+    SetShaderValuei(mat.shader, GetShaderLocation(mat.shader, "metalness.useSampler"), (int[1]){ 1 }, 1);
+    SetShaderValuei(mat.shader, GetShaderLocation(mat.shader, "roughness.useSampler"), (int[1]){ 1 }, 1);
+    SetShaderValuei(mat.shader, GetShaderLocation(mat.shader, "occlusion.useSampler"), (int[1]){ 1 }, 1);
+    
+    int renderModeLoc = GetShaderLocation(mat.shader, "renderMode");
+    SetShaderValuei(mat.shader, renderModeLoc, (int[1]){ 0 }, 1);
+
+    // Set up material properties color
+    mat.maps[MAP_ALBEDO].color = albedo;
+    mat.maps[MAP_NORMAL].color = (Color){ 128, 128, 255, 255 };
+    mat.maps[MAP_METALNESS].value = metalness;
+    mat.maps[MAP_ROUGHNESS].value = roughness;
+    mat.maps[MAP_OCCLUSION].value = 1.0f;
+    mat.maps[MAP_EMISSION].value = 0.5f;
+    mat.maps[MAP_HEIGHT].value = 0.5f;
+
+    return mat;
+}
\ No newline at end of file
diff --git a/examples/src/models/models_mesh_generation.c b/examples/src/models/models_mesh_generation.c
new file mode 100644
index 0000000..7222215
--- /dev/null
+++ b/examples/src/models/models_mesh_generation.c
@@ -0,0 +1,113 @@
+/*******************************************************************************************
+*
+*   raylib example - procedural mesh generation
+*
+*   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) 2017 Ramon Santamaria (Ray San)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define NUM_MODELS  7      // We generate 7 parametric 3d shapes
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - mesh generation");
+    
+    // We generate a checked image for texturing
+    Image checked = GenImageChecked(2, 2, 1, 1, RED, GREEN);
+    Texture2D texture = LoadTextureFromImage(checked);
+    UnloadImage(checked);
+    
+    Model models[NUM_MODELS];
+    
+    models[0] = LoadModelFromMesh(GenMeshPlane(2, 2, 5, 5));
+    models[1] = LoadModelFromMesh(GenMeshCube(2.0f, 1.0f, 2.0f));
+    models[2] = LoadModelFromMesh(GenMeshSphere(2, 32, 32));
+    models[3] = LoadModelFromMesh(GenMeshHemiSphere(2, 16, 16));
+    models[4] = LoadModelFromMesh(GenMeshCylinder(1, 2, 16));
+    models[5] = LoadModelFromMesh(GenMeshTorus(0.25f, 4.0f, 16, 32));
+    models[6] = LoadModelFromMesh(GenMeshKnot(1.0f, 2.0f, 16, 128));
+    
+    // Set checked texture as default diffuse component for all models material
+    for (int i = 0; i < NUM_MODELS; i++) models[i].material.maps[MAP_DIFFUSE].texture = texture;
+
+    // Define the camera to look into our 3d world
+    Camera camera = {{ 5.0f, 5.0f, 5.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f };
+
+    // Model drawing position
+    Vector3 position = { 0.0f, 0.0f, 0.0f };
+    
+    int currentModel = 0;
+    
+    SetCameraMode(camera, CAMERA_ORBITAL);  // Set a 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 internal camera and our camera
+        
+        if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
+        {
+            currentModel = (currentModel + 1)%NUM_MODELS; // Cycle between the textures
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            Begin3dMode(camera);
+
+                DrawModel(models[currentModel], position, 1.0f, WHITE);
+
+                DrawGrid(10, 1.0);
+
+            End3dMode();
+            
+            DrawRectangle(30, 400, 310, 30, Fade(SKYBLUE, 0.5f));
+            DrawRectangleLines(30, 400, 310, 30, Fade(DARKBLUE, 0.5f));
+            DrawText("MOUSE LEFT BUTTON to CYCLE PROCEDURAL MODELS", 40, 410, 10, BLUE);
+            
+            switch(currentModel)
+            {
+                case 0: DrawText("PLANE", 680, 10, 20, DARKBLUE); break;
+                case 1: DrawText("CUBE", 680, 10, 20, DARKBLUE); break;
+                case 2: DrawText("SPHERE", 680, 10, 20, DARKBLUE); break;
+                case 3: DrawText("HEMISPHERE", 640, 10, 20, DARKBLUE); break;
+                case 4: DrawText("CYLINDER", 680, 10, 20, DARKBLUE); break;
+                case 5: DrawText("TORUS", 680, 10, 20, DARKBLUE); break;
+                case 6: DrawText("KNOT", 680, 10, 20, DARKBLUE); break;
+                default: break;
+            }
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    
+    // Unload models data (GPU VRAM)
+    for (int i = 0; i < NUM_MODELS; i++) UnloadModel(models[i]);
+    
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
\ No newline at end of file
diff --git a/examples/src/models/models_skybox.c b/examples/src/models/models_skybox.c
new file mode 100644
index 0000000..46297e4
--- /dev/null
+++ b/examples/src/models/models_skybox.c
@@ -0,0 +1,85 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - Skybox 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) 2017 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - skybox loading and drawing");
+
+    // Define the camera to look into our 3d world
+    Camera camera = {{ 1.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f };
+
+    // Load skybox model   
+    Mesh cube = GenMeshCube(1.0f, 1.0f, 1.0f);
+    Model skybox = LoadModelFromMesh(cube);
+    
+    // Load skybox shader and set required locations
+    // NOTE: Some locations are automatically set at shader loading
+    skybox.material.shader = LoadShader("resources/shaders/skybox.vs", "resources/shaders/skybox.fs");
+    SetShaderValuei(skybox.material.shader, GetShaderLocation(skybox.material.shader, "environmentMap"), (int[1]){ MAP_CUBEMAP }, 1);
+
+    // Load cubemap shader and setup required shader locations
+    Shader shdrCubemap = LoadShader("resources/shaders/cubemap.vs", "resources/shaders/cubemap.fs");
+    SetShaderValuei(shdrCubemap, GetShaderLocation(shdrCubemap, "equirectangularMap"), (int[1]){ 0 }, 1);
+    
+    Texture2D texHDR = LoadTexture("resources/pinetree.hdr");
+    skybox.material.maps[MAP_CUBEMAP].texture = GenTextureCubemap(shdrCubemap, texHDR, 512);
+    
+    UnloadShader(shdrCubemap);  // Cubemap generation shader not required any more
+    
+    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);
+
+            Begin3dMode(camera);
+
+                DrawModel(skybox, Vector3Zero(), 1.0f, WHITE);
+                
+                DrawGrid(10, 1.0f);
+
+            End3dMode();
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadModel(skybox);        // Unload skybox model
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
diff --git a/examples/src/models/models_yaw_pitch_roll.c b/examples/src/models/models_yaw_pitch_roll.c
new file mode 100644
index 0000000..2bae2bf
--- /dev/null
+++ b/examples/src/models/models_yaw_pitch_roll.c
@@ -0,0 +1,198 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - Plane rotations (yaw, pitch, roll)
+*
+*   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)
+*
+*   Example based on Berni work on Raspberry Pi: 
+*   http://forum.raylib.com/index.php?p=/discussion/124/line-versus-triangle-drawing-order
+*
+*   Copyright (c) 2017 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+
+// Draw angle gauge controls
+void DrawAngleGauge(Texture2D angleGauge, int x, int y, float angle, char title[], Color color);
+
+//----------------------------------------------------------------------------------
+// Main entry point
+//----------------------------------------------------------------------------------
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - plane rotations (yaw, pitch, roll)");
+
+    Texture2D texAngleGauge = LoadTexture("resources/angle_gauge.png"); 
+    Texture2D texBackground = LoadTexture("resources/background.png");
+    Texture2D texPitch = LoadTexture("resources/pitch.png");   
+    Texture2D texPlane = LoadTexture("resources/plane.png");
+
+    RenderTexture2D framebuffer = LoadRenderTexture(192, 192);
+    
+    // Model loading
+    Model model = LoadModel("resources/plane.obj");      // Load OBJ model
+    model.material.maps[MAP_DIFFUSE].texture = LoadTexture("resources/plane_diffuse.png"); // Set map diffuse texture
+    
+    GenTextureMipmaps(&model.material.maps[MAP_DIFFUSE].texture);
+    
+    Camera camera = { 0 };
+    camera.position = (Vector3){ 0.0f, 60.0f, -120.0f };// Camera position perspective
+    camera.target = (Vector3){ 0.0f, 12.0f, 0.0f };     // Camera looking at point
+    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };          // Camera up vector (rotation towards target)
+    camera.fovy = 30.0f;                                // Camera field-of-view Y
+    
+    float pitch = 0.0f;
+    float roll = 0.0f;
+    float yaw = 0.0f;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        // Plane roll (x-axis) controls
+        if (IsKeyDown(KEY_LEFT)) roll += 1.0f;
+        else if (IsKeyDown(KEY_RIGHT)) roll -= 1.0f;
+        else
+        {
+            if (roll > 0.0f) roll -= 0.5f;
+            else if (roll < 0.0f) roll += 0.5f;
+        }
+        
+        // Plane yaw (y-axis) controls
+        if (IsKeyDown(KEY_S)) yaw += 1.0f;
+        else if (IsKeyDown(KEY_A)) yaw -= 1.0f;
+        else
+        {
+            if (yaw > 0.0f) yaw -= 0.5f;
+            else if (yaw < 0.0f) yaw += 0.5f;
+        }
+        
+        // Plane pitch (z-axis) controls
+        if (IsKeyDown(KEY_DOWN)) pitch += 0.6f;
+        else if (IsKeyDown(KEY_UP)) pitch -= 0.6f;
+        else
+        {
+            if (pitch > 0.3f) pitch -= 0.3f;
+            else if (pitch < -0.3f) pitch += 0.3f;
+        }
+        
+        // Wraps the phase of an angle to fit between -180 and +180 degrees
+        int pitchOffset = pitch;
+        while (pitchOffset > 180) pitchOffset -= 360;
+        while (pitchOffset < -180) pitchOffset += 360;
+        pitchOffset *= 10;
+
+        Matrix transform = MatrixIdentity();
+    
+        transform = MatrixMultiply(transform, MatrixRotateZ(DEG2RAD*roll));
+        transform = MatrixMultiply(transform, MatrixRotateX(DEG2RAD*pitch));
+        transform = MatrixMultiply(transform, MatrixRotateY(DEG2RAD*yaw));
+        
+        model.transform = transform;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+        
+            ClearBackground(RAYWHITE);
+        
+            // Draw framebuffer texture (Ahrs Display)
+            int centerX = framebuffer.texture.width/2;
+            int centerY = framebuffer.texture.height/2;
+            float scaleFactor = 0.5f;
+
+            BeginTextureMode(framebuffer);
+
+                BeginBlendMode(BLEND_ALPHA);
+
+                DrawTexturePro(texBackground, (Rectangle){0,0,texBackground.width, texBackground.height},
+                               (Rectangle){ centerX, centerY, texBackground.width*scaleFactor, texBackground.height*scaleFactor},
+                               (Vector2){texBackground.width/2*scaleFactor, texBackground.height/2*scaleFactor + pitchOffset*scaleFactor}, roll, WHITE);
+
+                DrawTexturePro(texPitch, (Rectangle){ 0, 0, texPitch.width, texPitch.height },
+                               (Rectangle){ centerX, centerY, texPitch.width*scaleFactor, texPitch.height*scaleFactor },
+                               (Vector2){ texPitch.width/2*scaleFactor, texPitch.height/2*scaleFactor + pitchOffset*scaleFactor }, roll, WHITE);
+            
+                DrawTexturePro(texPlane, (Rectangle){0,0,texPlane.width, texPlane.height },
+                               (Rectangle){ centerX, centerY, texPlane.width*scaleFactor, texPlane.height*scaleFactor }, 
+                               (Vector2){texPlane.width/2*scaleFactor, texPlane.height/2*scaleFactor }, 0, WHITE);
+                                
+                EndBlendMode();
+
+            EndTextureMode();
+
+            // Draw 3D model (recomended to draw 3D always before 2D)
+            Begin3dMode(camera);
+
+                DrawModel(model, (Vector3){ 0, 6.0f, 0 }, 1.0f, WHITE);   // Draw 3d model with texture
+                DrawGrid(10, 10.0f);
+
+            End3dMode();
+
+            // Draw 2D GUI stuff
+            DrawAngleGauge(texAngleGauge, 80, 80, roll, "roll", RED);
+            DrawAngleGauge(texAngleGauge, 190, 80, pitch, "pitch", GREEN);
+            DrawAngleGauge(texAngleGauge, 300, 80, yaw, "yaw", SKYBLUE);
+            
+            DrawRectangle(30, 360, 260, 70, Fade(SKYBLUE, 0.5f));
+            DrawRectangleLines(30, 360, 260, 70, Fade(DARKBLUE, 0.5f));
+            DrawText("Pitch controlled with: KEY_UP / KEY_DOWN", 40, 370, 10, DARKGRAY);
+            DrawText("Roll controlled with: KEY_LEFT / KEY_RIGHT", 40, 390, 10, DARKGRAY);
+            DrawText("Yaw controlled with: KEY_A / KEY_S", 40, 410, 10, DARKGRAY);
+
+            // Draw framebuffer texture
+            DrawTextureRec(framebuffer.texture, (Rectangle){ 0, 0, framebuffer.texture.width, -framebuffer.texture.height }, 
+                           (Vector2){ screenWidth - framebuffer.texture.width - 20, 20 }, Fade(WHITE, 0.8f));
+            
+            DrawRectangleLines(screenWidth - framebuffer.texture.width - 20, 20, framebuffer.texture.width, framebuffer.texture.height, DARKGRAY);
+        
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    
+    // Unload all loaded data
+    UnloadModel(model);
+    
+    UnloadRenderTexture(framebuffer);
+    
+    UnloadTexture(texAngleGauge); 
+    UnloadTexture(texBackground);
+    UnloadTexture(texPitch);  
+    UnloadTexture(texPlane);
+    
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+    
+    return 0;
+}
+
+// Draw angle gauge controls
+void DrawAngleGauge(Texture2D angleGauge, int x, int y, float angle, char title[], Color color)
+{
+    Rectangle srcRec = { 0, 0, angleGauge.width, angleGauge.height };
+    Rectangle dstRec = { x, y, angleGauge.width, angleGauge.height };
+    Vector2 origin = { angleGauge.width/2, angleGauge.height/2};
+    int textSize = 20;
+
+    DrawTexturePro(angleGauge, srcRec, dstRec, origin, angle, color);
+  
+    DrawText(FormatText("%5.1f�", angle), x - MeasureText(FormatText("%5.1f�", angle), textSize) / 2, y + 10, textSize, DARKGRAY); 
+    DrawText(title, x - MeasureText(title, textSize) / 2, y + 60, textSize, DARKGRAY);  
+}
\ No newline at end of file