143 lines
5 KiB
C#
143 lines
5 KiB
C#
/*******************************************************************************************
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*
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* raylib [models] example - loading gltf
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*
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* Example complexity rating: [★☆☆☆] 1/4
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*
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* LIMITATIONS:
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* - Only supports 1 armature per file, and skips loading it if there are multiple armatures
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* - Only supports linear interpolation (default method in Blender when checked
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* "Always Sample Animations" when exporting a GLTF file)
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* - Only supports translation/rotation/scale animation channel.path,
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* weights not considered (i.e. morph targets)
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*
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* Example originally created with raylib 3.7, last time updated with raylib 4.2
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2020-2025 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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namespace Examples.Models;
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public partial class LoadingGltf : IExample
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{
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private const int screenWidth = 800;
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private const int screenHeight = 450;
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public string Name => "Models / Loading GLTF";
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public string Title => "raylib [models] example - loading gltf";
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private Camera3D camera;
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private Model model;
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private Vector3 position;
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private unsafe ModelAnimation* anims;
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private int animCount;
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private int animIndex;
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private float animCurrentFrame;
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public unsafe void Init()
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{
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// Define the camera to look into our 3d world
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camera = new();
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camera.Position = new Vector3(6.0f, 6.0f, 6.0f); // Camera position
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camera.Target = new Vector3(0.0f, 2.0f, 0.0f); // Camera looking at point
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camera.Up = new Vector3(0.0f, 1.0f, 0.0f); // Camera up vector (rotation towards target)
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camera.FovY = 45.0f; // Camera field-of-view Y
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camera.Projection = CameraProjection.Perspective; // Camera projection type
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// Load model
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model = LoadModel("resources/models/gltf/robot.glb");
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position = new(0.0f, 0.0f, 0.0f); // Set model world position
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// Load model animations
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anims = LoadModelAnimations("resources/models/gltf/robot.glb", ref animCount);
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// Animation playing variables
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animIndex = 0; // Current animation playing
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animCurrentFrame = 0.0f; // Current animation frame
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}
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public unsafe void Update()
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{
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// Update
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//----------------------------------------------------------------------------------
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UpdateCamera(ref camera, CameraMode.Orbital);
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// Select current animation
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if (IsKeyPressed(KeyboardKey.Right))
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{
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animIndex = (animIndex + 1) % animCount;
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}
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else if (IsKeyPressed(KeyboardKey.Left))
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{
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animIndex = (animIndex + animCount - 1) % animCount;
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}
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// Update model animation
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animCurrentFrame = (animCurrentFrame + 1) % anims[animIndex].KeyFrameCount;
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UpdateModelAnimation(model, anims[animIndex], (float)animCurrentFrame);
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(Color.RayWhite);
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BeginMode3D(camera);
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DrawModel(
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model,
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position,
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1f,
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Color.White
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);
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DrawGrid(10, 1.0f);
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EndMode3D();
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DrawText($"Current animation: {anims[animIndex].NameToString()}", 10, 40, 20, Color.Maroon);
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DrawText("Use the LEFT/RIGHT keys to switch animation", 10, 10, 20, Color.Gray);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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public unsafe void Unload()
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{
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UnloadModelAnimations(anims, animCount); // Unload model animations data
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UnloadModel(model); // Unload model
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}
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public static int Main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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InitWindow(screenWidth, screenHeight, "raylib [models] example - loading gltf");
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
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var game = new LoadingGltf();
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game.Init();
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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game.Update();
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}
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game.Unload();
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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}
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