cscの作法 その371

概要

cscの作法、調べてみた。
opentkのgamewindow使ってみた。
assimp使ってみた。

写真

サンプルコード

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Reflection;
using Assimp;
using Assimp.Configs;
using OpenTK;
using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL;

namespace App
{
	public class SimpleOpenGLSample: GameWindow {
		private Scene m_model;
		private float m_angle;
		private int m_displayList;
		public SimpleOpenGLSample(): base() {
			Title = "test";
			String fileName = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "sphere.obj");
			AssimpContext importer = new AssimpContext();
			m_model = importer.ImportFile(fileName, PostProcessPreset.TargetRealTimeMaximumQuality);
		}
		protected override void OnUpdateFrame(FrameEventArgs e) {
			base.OnUpdateFrame(e);
			m_angle += 25f * (float) e.Time;
			if (m_angle > 360)
			{
				m_angle = 0.0f;
			}
			if (Keyboard[OpenTK.Input.Key.Escape])
			{
				this.Exit();
			}
		}
		protected override void OnRenderFrame(FrameEventArgs e) {
			base.OnRenderFrame(e);
			GL.ClearColor(Color.CornflowerBlue);
			GL.Clear(ClearBufferMask.ColorBufferBit);
				for (int i = 0; i < m_model.RootNode.ChildCount; i++)
				{
					Render(m_model, m_model.RootNode.Children[i]);
				}
			SwapBuffers();
		}
		private void Render(Scene scene, Node node) {
			if (node.HasMeshes)
			{
				foreach (int index in node.MeshIndices)
				{
					Mesh mesh = scene.Meshes[index];
					foreach (Face face in mesh.Faces)
					{
						BeginMode faceMode;
						switch (face.IndexCount)
						{
						case 1:
							faceMode = BeginMode.Points;
						break;
						case 2:
							faceMode = BeginMode.Lines;
						break;
						case 3:
							faceMode = BeginMode.Triangles;
						break;
						default:
							faceMode = BeginMode.Polygon;
						break;
						}
						GL.Begin(faceMode);
						for (int i = 0; i < face.IndexCount; i++)
						{
							int indice = face.Indices[i];
							GL.Color3(Color.White);
							Vector3 pos = FromVector(mesh.Vertices[indice]);
							GL.Vertex3(pos);
						}
						GL.End();
					}
				}
			}
		}
		private Vector3 FromVector(Vector3D vec) {
			Vector3 v;
			v.X = vec.X;
			v.Y = vec.Y;
			v.Z = vec.Z;
			return v;
		}
	}
	class Program {
		static void Main(string[] args) {
			SimpleOpenGLSample sample = new SimpleOpenGLSample();
			sample.Run();
		}
	}
}

コンパイル手順

>set PATH=C:\Windows\Microsoft.NET\Framework\v4.0.30319;%PATH%


>csc ass3.cs /reference:OpenTK.dll /reference:AssimpNet.dll

以上。