Improved some examples

examples/models/models_mesh_generation.c

@@ -11,9 +11,8 @@
 
 #include "raylib.h"
 
-//------------------------------------------------------------------------------------
-// Program main entry point
-//------------------------------------------------------------------------------------
+#define NUM_MODELS  7      // We generate 7 parametric 3d shapes
+
 int main()
 {
     // Initialization
@@ -23,33 +22,35 @@ int main()
 
     InitWindow(screenWidth, screenHeight, "raylib [models] example - mesh generation");
     
-    //Model model = LoadModelFromMesh(GenMeshPlane(2, 2, 5, 5));            // Texture coordinates must be divided by resX, resZ
-    //Model model = LoadModelFromMesh(GenMeshCube(2.0f, 1.0f, 2.0f));       // OK!
-    //Model model = LoadModelFromMesh(GenMeshSphere(2, 32, 32));              // OK! (par_shapes)
-    //Model model = LoadModelFromMesh(GenMeshHemiSphere(2, 16, 16));              // OK! (par_shapes)
-    //Model model = LoadModelFromMesh(GenMeshCylinder(1, 2, 16));              // OK! (par_shapes)
-    Model model = LoadModelFromMesh(GenMeshTorus(0.25f, 4.0f, 16, 32));
-    //Model model = LoadModelFromMesh(GenMeshKnot(1.0f, 2.0f, 16, 128));
-    model.material.maps[MAP_DIFFUSE].texture = LoadTexture("resources/pixels.png");
-
-    // Debug information
-    /*
-    printf("model.mesh.vertexCount: %i\n", model.mesh.vertexCount);
-    printf("model.mesh.triangleCount: %i\n", model.mesh.triangleCount);
-    printf("model.mesh.vboId (position): %i\n", model.mesh.vboId[0]);
-    printf("model.mesh.vboId (texcoords): %i\n", model.mesh.vboId[1]);
-    printf("model.mesh.vboId (normals): %i\n", model.mesh.vboId[2]);
-    printf("model.mesh.vboId (indices): %i\n", model.mesh.vboId[6]);
-    */
+    // 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 };
     
-    SetCameraMode(camera, CAMERA_FREE);         // Set a free camera mode
+    int currentModel = 0;
+    
+    SetCameraMode(camera, CAMERA_ORBITAL);  // Set a orbital camera mode
 
-    SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
+    SetTargetFPS(60);                       // Set our game to run at 60 frames-per-second
     //--------------------------------------------------------------------------------------
 
     // Main game loop
@@ -58,6 +59,11 @@ int main()
         // Update
         //----------------------------------------------------------------------------------
         UpdateCamera(&camera);      // Update internal camera and our camera
+        
+        if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
+        {
+            currentModel = (currentModel + 1)%NUM_MODELS; // Cycle between the textures
+        }
         //----------------------------------------------------------------------------------
 
         // Draw
@@ -68,11 +74,27 @@ int main()
 
             Begin3dMode(camera);
 
-                DrawModel(model, position, 1.0f, WHITE);
+                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();
         //----------------------------------------------------------------------------------
@@ -80,7 +102,9 @@ int main()
 
     // De-Initialization
     //--------------------------------------------------------------------------------------
-    UnloadModel(model);
+    
+    // Unload models data (GPU VRAM)
+    for (int i = 0; i < NUM_MODELS; i++) UnloadModel(models[i]);
     
     CloseWindow();        // Close window and OpenGL context
     //--------------------------------------------------------------------------------------