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/*******************************************************************************************
*
* raylib [models] example - Models loading
*
* raylib supports multiple models file formats:
*
* - OBJ > Text file, must include vertex position-texcoords-normals information,
* if files references some .mtl materials file, it will be loaded (or try to)
* - GLTF > Modern text/binary file format, includes lot of information and it could
* also reference external files, raylib will try loading mesh and materials data
* - IQM > Binary file format including mesh vertex data but also animation data,
* raylib can load .iqm animations.
*
* This example has been created using raylib 2.6 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2014-2019 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
static Camera camera = { 0 };
static Model model = { 0 };
static Texture2D texture = { 0 };
static Vector3 position = { 0.0f, 0.0f, 0.0f };
static BoundingBox bounds = { 0 };
static bool selected = false;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Program Main Entry Point
//----------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [models] example - models loading");
// Define the camera to look into our 3d world
camera.position = (Vector3){ 50.0f, 50.0f, 50.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 10.0f, 0.0f }; // Camera looking at point
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
camera.fovy = 45.0f; // Camera field-of-view Y
camera.projection = CAMERA_PERSPECTIVE; // Camera mode type
model = LoadModel("resources/models/castle.obj"); // Load model
texture = LoadTexture("resources/models/castle_diffuse.png"); // Load model texture
model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; // Set map diffuse texture
bounds = GetMeshBoundingBox(model.meshes[0]); // Set model bounds
// NOTE: bounds are calculated from the original size of the model,
// if model is scaled on drawing, bounds must be also scaled
SetCameraMode(camera, CAMERA_FREE); // Set a free camera mode
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 60, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadTexture(texture); // Unload texture
UnloadModel(model); // Unload model
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definitions
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera);
// Load new models/textures on drag&drop
if (IsFileDropped())
{
int count = 0;
char **droppedFiles = GetDroppedFiles(&count);
if (count == 1) // Only support one file dropped
{
if (IsFileExtension(droppedFiles[0], ".obj") ||
IsFileExtension(droppedFiles[0], ".gltf") ||
IsFileExtension(droppedFiles[0], ".iqm")) // Model file formats supported
{
UnloadModel(model); // Unload previous model
model = LoadModel(droppedFiles[0]); // Load new model
model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; // Set current map diffuse texture
bounds = GetMeshBoundingBox(model.meshes[0]);
// TODO: Move camera position from target enough distance to visualize model properly
}
else if (IsFileExtension(droppedFiles[0], ".png")) // Texture file formats supported
{
// Unload current model texture and load new one
UnloadTexture(texture);
texture = LoadTexture(droppedFiles[0]);
model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture;
}
}
ClearDroppedFiles(); // Clear internal buffers
}
// 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, 10.0f); // Draw a grid
if (selected) DrawBoundingBox(bounds, GREEN); // Draw selection box
EndMode3D();
DrawText("Drag & drop model to load mesh/texture.", 10, GetScreenHeight() - 20, 10, DARKGRAY);
if (selected) DrawText("MODEL SELECTED", GetScreenWidth() - 110, 10, 10, GREEN);
DrawText("(c) Castle 3D model by Alberto Cano", screenWidth - 200, screenHeight - 20, 10, GRAY);
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
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