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Black Art of Java Game Programming by Joel
Black Art of Java Game Programming by Joel Fan Sams, Macmillan Computer Publishing ISBN: 1571690433 Pub Date: 11/01/96 Previous Table of Contents Next Implementing the Polyhedron Instance The implementation (see Listing 11-12) will turn out to be simpler than you might think, but since it might contain unpleasant surprises, there are a few comments to be made. Listing 11-12 The fPolyhedronInstance import java.awt.*; /** * Class that represents an instance of a polyhedron. */ public class fPolyhedronInstance extends Object { //– the transformed vertices protected fArrayOf3dPoints transformedVertices; //– the matrix used for transformations protected fMatrix3d myTransformMatrix; //– the polyhedron protected fPolyhedron thePolyhedron; //– position in WCS protected fPoint3d myPosition; //– the angle in WCS protected fAngle3d myAngle; //– protected boolean positionIsDirty,angleIsDirty; /** * construct an instance of the supplied polyhedron. */ public fPolyhedronInstance(fPolyhedron poly){ //– the polyhedron that this instance is using thePolyhedron=poly; //– create the vertices to be used for storing transformations try{ transformedVertices=(fArrayOf3dPoints)thePolyhedron.getVertices().makeClo ne(); } catch(Exception e){e.printStackTrace();} myPosition=new fPoint3d();
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