web3d.java

空战游戏,来自java2 编程第五版源码

import java.applet.*;
import java.awt.*;

class Web3D extends Object3D
{
	static final int MAX_AXES  = 14;
	static final int Z_SPACING = 160;
	
	static final int XROT_SPEED = 8;
	static final int YROT_SPEED = 8;
	static final int ZROT_SPEED = 8;
	
	static double Object[] = new double[3*7*MAX_AXES];
	static int Lines[] = new int[2*6*MAX_AXES + (2*4*(MAX_AXES-1))];

	/*static double Object[] = {	120,	0,	0,
								60,		0,	0,
								0,		0,	0,
								-60,	0,	0,
								-120,	0,	0};
	
	static int Lines[] = {	0,1,	1,2,	2,3,	3,4};*/

	int ScrollPos;

	public Web3D(double x, double y, double z, int xr, int yr, int zr)
	{
		Name = "Web3D";

		XPos = x;
		YPos = y;
		ZPos = z;
		
		XRot = xr;
		YRot = yr;
		ZRot = zr;

		ScrollPos = 0;

		InitWeb();
		
		VertNum = Object.length / 3;
		LineNum = Lines.length / 2;
	    
		Vertices = new Vector3D[VertNum];
		Points = new Point2D[VertNum];
		
		for (int i=0; i<VertNum; i++)
		{
			Points[i]   = new Point2D();
			Vertices[i] = new Vector3D();
			
			Vertices[i].x = Object[i*3+X];
			Vertices[i].y = Object[i*3+Y];
			Vertices[i].z = Object[i*3+Z];
		}

		Visible = true;
	}
	
	public void Draw(Graphics g, Matrix3D CameraMatrix)
	{
		Matrix3D MyMatrix = new Matrix3D();
		
		MyMatrix.RotateZ(ZRot);
		MyMatrix.RotateX(XRot);
		MyMatrix.RotateY(YRot);
		MyMatrix.Scale(XScale,YScale,ZScale);
		MyMatrix.Shear(XShear,YShear);
		MyMatrix.Translate(XPos,YPos,ZPos+ScrollPos);

		MyMatrix.Merge(CameraMatrix.GetMatrix());
		
		for (int i=0; i<VertNum; i++)
		{
			MyMatrix.Transform(Vertices[i]);
			Points[i] = Point2D.Projection(Vertices[i]);			
		}
		
		for (int i=0; i<LineNum; i++)
		{
			g.setColor(new Color(32,32,210));
			g.drawLine(Points[Lines[i*2]].x,Points[Lines[i*2]].y,Points[Lines[i*2+1]].x,Points[Lines[i*2+1]].y);
		}
	}

	public boolean Handler()
	{
		ScrollPos -= 8;
		if (ScrollPos <= -Z_SPACING)
			ScrollPos += Z_SPACING;
		/*XRot += XROT_SPEED;
		if (XRot >= 360) XRot -= 360;
		YRot += YROT_SPEED;
		if (YRot >= 360) YRot -= 360;
		ZRot += ZROT_SPEED;
		if (ZRot >= 360) ZRot -= 360;*/
		return true;
	}

	private void InitWeb()
	{
		int i = 0;
		int j = 0;
		int k = 0;
		
		double z = 0;
		double y = 0;

		for (int l=0; l<MAX_AXES; l++)
		{
			Object[i++] = 300;
			Object[i++] = y-250;
			Object[i++] = z;
			
			Object[i++] = 240;
			Object[i++] = y;
			Object[i++] = z;
			
			Object[i++] = 120;
			Object[i++] = y;
			Object[i++] = z;
			
			Object[i++] = 0;
			Object[i++] = y;
			Object[i++] = z;
			
			Object[i++] = -120;
			Object[i++] = y;
			Object[i++] = z;
			
			Object[i++] = -240;
			Object[i++] = y;
			Object[i++] = z;
			
			Object[i++] = -300;
			Object[i++] = y-250;
			Object[i++] = z;

			Lines[j++] = k+0;
			Lines[j++] = k+1;
			
			Lines[j++] = k+1;
			Lines[j++] = k+2;
			
			Lines[j++] = k+2;
			Lines[j++] = k+3;
			
			Lines[j++] = k+3;
			Lines[j++] = k+4;

			Lines[j++] = k+4;
			Lines[j++] = k+5;

			Lines[j++] = k+5;
			Lines[j++] = k+6;

			k += 7;

			//y -= 0;
			z += Z_SPACING;
		}
		
		k = 0;
		
		for (int l=0; l<MAX_AXES-1; l++)
		{
			Lines[j++] = k+0;
			Lines[j++] = k+7;
			Lines[j++] = k+6;
			Lines[j++] = k+13;
			Lines[j++] = k+1;
			Lines[j++] = k+8;
			Lines[j++] = k+5;
			Lines[j++] = k+12;
			k += 7;
		}
	}
}