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examples/models/models_mesh_generation.c

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+/*******************************************************************************************
+*
+*   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(2.0, 1.0, 2.0))
+    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, 4.0, 16, 32))
+    models[6] = LoadModelFromMesh(GenMeshKnot(1.0, 2.0, 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 = [[ 5.0, 5.0, 5.0 ], [ 0.0, 0.0, 0.0 ], [ 0.0, 1.0, 0.0 ], 45.0, 0 ]
+
+    # Model drawing position
+    Vector3 position = [ 0.0, 0.0, 0.0 ]
+    
+    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)
+
+            BeginMode3D(camera)
+
+                DrawModel(models[currentModel], position, 1.0, WHITE)
+
+                DrawGrid(10, 1.0)
+
+            EndMode3D()
+            
+            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
+]