new example: models_obj_viewer

examples/models/models_obj_viewer.c

@@ -0,0 +1,127 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - OBJ models viewer
+*
+*   This example has been created using raylib 2.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2014-2018 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <strings.h>        // Required for: strcpy()
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example - obj viewer");
+
+    // Define the camera to look into our 3d world
+    Camera camera = {{ 30.0f, 30.0f, 30.0f }, { 0.0f, 10.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f, 0 };
+
+    Model model = LoadModel("resources/models/turret.obj");                     // Load default model obj
+    Texture2D texture = LoadTexture("resources/models/turret_diffuse.png");     // Load default model texture
+    model.material.maps[MAP_DIFFUSE].texture = texture; // Bind texture to model
+    
+    Vector3 position = { 0.0, 0.0, 0.0 };               // Set model position
+    BoundingBox bounds = MeshBoundingBox(model.mesh);   // Set model bounds     
+    bool selected = false;                              // Selected object flag
+    
+    SetCameraMode(camera, CAMERA_FREE);                 // Set a free camera mode
+
+    char objFilename[64] = "turret.obj";
+
+    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
+        //----------------------------------------------------------------------------------
+        if (IsFileDropped())
+        {
+            int count = 0;
+            char **droppedFiles = GetDroppedFiles(&count);
+            
+            if (count == 1)
+            {
+                if (IsFileExtension(droppedFiles[0], ".obj"))
+                {
+                    UnloadMesh(&model.mesh);
+                    model.mesh = LoadMesh(droppedFiles[0]);
+                    bounds = MeshBoundingBox(model.mesh);
+                }
+                else if (IsFileExtension(droppedFiles[0], ".png"))
+                {
+                    UnloadTexture(texture);
+                    texture = LoadTexture(droppedFiles[0]);
+                    model.material.maps[MAP_DIFFUSE].texture = texture;
+                }
+
+                strcpy(objFilename, GetFileName(droppedFiles[0]));
+            }
+            
+            ClearDroppedFiles();    // Clear internal buffers
+        }
+        
+        UpdateCamera(&camera);
+        
+        // Select model on mouse click
+        if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
+        {
+            // Check collision between ray and box
+            if (CheckCollisionRayBox(GetMouseRay(GetMousePosition(), camera), bounds)) selected = !selected;
+            else selected = false;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+
+                DrawModel(model, position, 1.0f, WHITE);   // Draw 3d model with texture
+
+                DrawGrid(20.0, 10.0);        // Draw a grid
+                
+                if (selected) DrawBoundingBox(bounds, GREEN);
+                
+            EndMode3D();
+            
+            DrawText("Free camera default controls:", 10, 20, 10, DARKGRAY);
+            DrawText("- Mouse Wheel to Zoom in-out", 20, 40, 10, GRAY);
+            DrawText("- Mouse Wheel Pressed to Pan", 20, 60, 10, GRAY);
+            DrawText("- Alt + Mouse Wheel Pressed to Rotate", 20, 80, 10, GRAY);
+            DrawText("- Alt + Ctrl + Mouse Wheel Pressed for Smooth Zoom", 20, 100, 10, GRAY);
+            
+            DrawText("Drag & drop .obj/.png to load mesh/texture.", 10, GetScreenHeight() - 20, 10, DARKGRAY);
+            DrawText(FormatText("Current file: %s", objFilename), 250, GetScreenHeight() - 20, 10, GRAY);
+            if (selected) DrawText("MODEL SELECTED", GetScreenWidth() - 110, 10, 10, GREEN);
+            
+            DrawText("(c) Turret 3D model by Alberto Cano", screenWidth - 200, screenHeight - 20, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadModel(model);         // Unload model
+
+    ClearDroppedFiles();        // Clear internal buffers
+    
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

examples/models/resources/models/cube.obj

@@ -0,0 +1,98 @@
+# reference material
+mtllib myCube.mtl
+
+# object Pau_Box
+
+# vertex  (XZY)
+v  5.5  0  1.5
+v  8.5  0  1.5
+v  5.5  0  -1.5
+v  8.5  0  -1.5
+v  5.5  3  1.5
+v  8.5  3  1.5
+v  5.5  3  -1.5
+v  8.5  3  -1.5
+
+# normals  (XYZ)
+# red
+vn  0  -1  0
+#blue
+vn  0  1  0
+#top
+vn  0  0  1
+#yellow
+vn  1  0  0
+#bottom
+vn  0  0  -1
+#green
+vn  -1  0  0
+
+
+# UVs (XY)
+# yellow (1234)
+vt 0.5  0    0 
+vt 1    0    0
+vt 1    0.5  0
+vt 0.5  0.5  0
+# red (5678)
+vt 0.5  0.5  0
+vt 1    0.5  0
+vt 0.5  1    0
+vt 1    1    0
+#bottom (9101112)
+vt 0    0.5  0
+vt 1    0.5  0
+vt 1    0    0
+vt 0    0    0
+#top (13141516)
+vt 0    0.5  0
+vt 1    0.5  0
+vt 1    1    0
+vt 0    1    0
+#green (17181920)
+vt 0.5  0    0
+vt 0    0    0
+vt 0    0.5  0
+vt 0.5  0.5  0
+#blue (21222324)
+vt 0    0.5  0
+vt 0.5  0.5  0
+vt 0.5  1    0
+vt 0    1    0
+
+# merger 
+g Pau_Box
+
+# reference material
+usemtl Material_1
+
+# bottom
+f 1/9/1   3/10/1  4/11/1 
+f 4/11/1  2/12/1  1/9/1 
+
+# top
+f 5/13/2 6/14/2 8/15/2 
+f 8/15/2 7/16/2 5/13/2 
+
+# front-yellow
+f 1/17/6 2/18/6 6/19/6 
+f 6/19/6 5/20/6 1/17/6 
+
+# right-blue
+f 2/6/1 4/5/1 8/7/1 
+f 8/7/1 6/8/1 2/6/1
+
+# back-green
+f 4/2/3 3/1/3 7/4/3 
+f 7/4/3 8/3/3 4/2/3 
+
+# left-red
+f 3/22/5 1/21/5 5/24/5 
+f 5/24/5 7/23/5 3/22/5 
+
+
+
+
+
+
+