ラインが引ければ3D-その2
ラインだけでは立体に見えにくいので、奥にいくほど暗くしてみました
namespace Line3D_2 { public class Game1 : Microsoft.Xna.Framework.Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; private Texture2D linePoint; private Rectangle lineDrawArea = new Rectangle(); private Rectangle lineSrcArea = new Rectangle(); private Vector2 lineCenter = new Vector2(0, 0); private SpriteEffects lineSpEffect = new SpriteEffects(); private float roolX = 0.0f; private float roolY = 0.0f; private ModelPoint[] modelPoint ={ new ModelPoint( new Vector3( 0.500000f, 1.000000f,-0.500000f)), new ModelPoint( new Vector3( 0.500000f, 0.500000f,-1.000000f)), new ModelPoint( new Vector3( 1.000000f, 0.500000f,-0.500000f)), new ModelPoint( new Vector3( 1.000000f, 0.500000f, 0.500000f)), new ModelPoint( new Vector3( 0.500000f, 1.000000f, 0.500000f)), new ModelPoint( new Vector3( -0.500000f, 1.000000f,-0.500000f)), new ModelPoint( new Vector3( -0.500000f, 0.500000f,-1.000000f)), new ModelPoint( new Vector3( -1.000000f, 0.500000f,-0.500000f)), new ModelPoint( new Vector3( -0.500000f, 1.000000f, 0.500000f)), new ModelPoint( new Vector3( 0.500000f,-0.500000f,-1.000000f)), new ModelPoint( new Vector3( 1.000000f,-0.500000f,-0.500000f)), new ModelPoint( new Vector3( -0.500000f,-0.500000f,-1.000000f)), new ModelPoint( new Vector3( 1.000000f,-0.500000f, 0.500000f)), new ModelPoint( new Vector3( -1.000000f, 0.500000f, 0.500000f)), new ModelPoint( new Vector3( -1.000000f,-0.500000f,-0.500000f)), new ModelPoint( new Vector3( -1.000000f,-0.500000f, 0.500000f)), new ModelPoint( new Vector3( 0.500000f, 0.500000f, 1.000000f)), new ModelPoint( new Vector3( -0.500000f, 0.500000f, 1.000000f)), new ModelPoint( new Vector3( 0.500000f,-0.500000f, 1.000000f)), new ModelPoint( new Vector3( -0.500000f,-0.500000f, 1.000000f)), new ModelPoint( new Vector3( 0.500000f,-1.000000f,-0.500000f)), new ModelPoint( new Vector3( 0.500000f,-1.000000f, 0.500000f)), new ModelPoint( new Vector3( -0.500000f,-1.000000f,-0.500000f)), new ModelPoint( new Vector3( -0.500000f,-1.000000f, 0.500000f)) }; private ModelLine[] modelLine ={ new ModelLine( 0, 1),new ModelLine( 0, 2),new ModelLine( 0, 4),new ModelLine( 0, 5), new ModelLine( 1, 2),new ModelLine( 1, 6),new ModelLine( 1, 9),new ModelLine( 2, 3), new ModelLine( 2,10),new ModelLine( 3, 4),new ModelLine( 3,12),new ModelLine( 3,16), new ModelLine( 4, 8),new ModelLine( 4,16),new ModelLine( 5, 6),new ModelLine( 5, 7), new ModelLine( 5, 8),new ModelLine( 6, 7),new ModelLine( 6,11),new ModelLine( 7,13), new ModelLine( 7,14),new ModelLine( 8,13),new ModelLine( 8,17),new ModelLine( 9,10), new ModelLine( 9,11),new ModelLine( 9,20),new ModelLine(10,12),new ModelLine(10,20), new ModelLine(11,14),new ModelLine(11,22),new ModelLine(12,18),new ModelLine(12,21), new ModelLine(13,15),new ModelLine(13,17),new ModelLine(14,15),new ModelLine(14,22), new ModelLine(15,19),new ModelLine(15,23),new ModelLine(16,17),new ModelLine(16,18), new ModelLine(17,19),new ModelLine(18,21),new ModelLine(18,19),new ModelLine(19,23), new ModelLine(20,22),new ModelLine(20,21),new ModelLine(21,23),new ModelLine(22,23) }; public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; graphics.PreferredBackBufferWidth = 240; graphics.PreferredBackBufferHeight = 320; // Frame rate is 30 fps by default for Zune. TargetElapsedTime = TimeSpan.FromSeconds(1 / 30.0); } protected override void LoadContent() { spriteBatch = new SpriteBatch(GraphicsDevice); linePoint = Content.Load<Texture2D>("Point"); lineSrcArea.X = 0; lineSrcArea.Y = 0; lineSrcArea.Width = 1; lineSrcArea.Height = 1; lineDrawArea.Height = 1; } protected override void Update(GameTime gameTime) { float cenX, cenY; Vector3 tPoint; if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); roolX += 0.02f; roolY += 0.03f; //画面中央を求める cenX = graphics.PreferredBackBufferWidth / 2; cenY = graphics.PreferredBackBufferHeight / 2; //回転させたマトリックを求める Matrix tMat = Matrix.CreateRotationX(roolX) * Matrix.CreateRotationY(roolY); foreach (ModelPoint poi in modelPoint) { //座標変換 tPoint = Vector3.Transform(poi.Point, tMat); poi.DepCol = 1.0f - (tPoint.Z + 1.2f) / 2.4f; //適当な透視変換（良い子はまねしないでね） tPoint.Z += 4; poi.Trans.X = tPoint.X * 256 / tPoint.Z + cenX; poi.Trans.Y = tPoint.Y * 256 / tPoint.Z + cenY; } base.Update(gameTime); } protected override void Draw(GameTime gameTime) { float ff; GraphicsDevice.Clear(Color.Black); spriteBatch.Begin(); foreach (ModelLine lData in modelLine) { ff = (modelPoint[lData.Point0].DepCol + modelPoint[lData.Point1].DepCol) / 2.0f; drawLine(modelPoint[lData.Point0].Trans, modelPoint[lData.Point1].Trans, new Color(ff, ff, ff)); } spriteBatch.End(); base.Draw(gameTime); } //------------------------------------------------------------------------------- //ラインを引く //------------------------------------------------------------------------------- private void drawLine(Vector2 iPoint0, Vector2 iPoint1, Color lineColor) { double r, ra; float x, y; x = iPoint1.X - iPoint0.X; y = iPoint1.Y - iPoint0.Y; r = Math.Sqrt(x * x + y * y); ra = (x > 0) ? Math.Asin(y / r) : Math.PI - Math.Asin(y / r); lineDrawArea.X = (int)iPoint0.X; lineDrawArea.Y = (int)iPoint0.Y; lineDrawArea.Width = (int)r; spriteBatch.Draw(linePoint, lineDrawArea, lineSrcArea, lineColor, (float)ra, lineCenter, lineSpEffect, 0); } } //------------------------------------------------------------------------------- // モデルのPoint構造体 public class ModelPoint { public Vector3 Point; // 座標データ public Vector2 Trans; // 透視変換後の座標 public float DepCol; // 頂点のZ値から色計算用 public ModelPoint(Vector3 iV3) { Point = iV3; Trans = new Vector2(0, 0); DepCol = 0.0f; } } //------------------------------------------------------------------------------- // モデルのLine構造体 public class ModelLine { public int Point0; public int Point1; public ModelLine(int p0, int p1) { Point0 = p0; Point1 = p1; } } }
