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#include "clipping3d.h"
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#include "math.h"
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Clipping3d::Clipping3d(int iScreenWidth, int iScreenHeight, float iZNear, float iZFar)
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{
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zNear=iZNear;
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zFar=iZFar;
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screenWidth=iScreenWidth;
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screenHeight=iScreenHeight;
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calcPlane(screenWidth,screenHeight);
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numberOfPolygons=16;
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tMapareDataList = new ObjectArray<TMapareData>(numberOfPolygons);
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for ( int i=0; i<numberOfPolygons ; i++)
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{
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tMapareDataList->setObject(new TMapareData(),i);
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}
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}
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Clipping3d::~Clipping3d()
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{
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if (tMapareDataList != null)
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{
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delete tMapareDataList;
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}
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}
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//*********************************************************************
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//return the cliped polygons
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//*********************************************************************
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bool Clipping3d::getClippedData(TPolytri *tPolytri, int step)
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{
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bool event=false;
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TMapareData *tMapareData=tMapareDataList->getObject(step);
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if ( tMapareData->getexsists() == 1 )
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{
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float z1=1/tMapareData->getcz(0);
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float z2=1/tMapareData->getcz(1);
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float z3=1/tMapareData->getcz(2);
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tPolytri->x1=((tMapareData->getcx(0)*screenWidth)*((z1)))+(screenWidth/2);
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tPolytri->x2=((tMapareData->getcx(1)*screenWidth)*((z2)))+(screenWidth/2);
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tPolytri->x3=((tMapareData->getcx(2)*screenWidth)*((z3)))+(screenWidth/2);
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tPolytri->y1=((tMapareData->getcy(0)*screenHeight)*((z1)))+(screenHeight/2);
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tPolytri->y2=((tMapareData->getcy(1)*screenHeight)*((z2)))+(screenHeight/2);
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tPolytri->y3=((tMapareData->getcy(2)*screenHeight)*((z3)))+(screenHeight/2);
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int sant=removePolygon2d(tPolytri);
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if ( sant == 3 )
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{
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tPolytri->z1=tMapareData->getcz(0);
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tPolytri->z2=tMapareData->getcz(1);
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tPolytri->z3=tMapareData->getcz(2);
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tPolytri->u1=tMapareData->getu(0)*256;
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tPolytri->u2=tMapareData->getu(1)*256;
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tPolytri->u3=tMapareData->getu(2)*256;
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tPolytri->v1=tMapareData->getv(0)*256;
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tPolytri->v2=tMapareData->getv(1)*256;
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tPolytri->v3=tMapareData->getv(2)*256;
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event=true;
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}
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}
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return event;
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}
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//*********************************************************************
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//clip against 6 planes
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//*********************************************************************
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void Clipping3d::clipPolygonAgainst6Planes(Object3d *object3d, int step)
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{
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int pos1=step*3+0;
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int pos2=step*3+1;
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int pos3=step*3+2;
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int position1=object3d->getpoints(pos1);
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int position2=object3d->getpoints(pos2);
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int position3=object3d->getpoints(pos3);
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for ( int ex=0; ex<numberOfPolygons ; ex++ )
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{
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TMapareData *tMapareData=tMapareDataList->getObject(ex);
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tMapareData->setexsists(0);
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}
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TMapareData *tMapareData=tMapareDataList->getObject(0);
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tMapareData->setexsists(1);
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tMapareData->setcx(object3d->getx(position1),0);
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tMapareData->setcy(object3d->gety(position1),0);
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tMapareData->setcz(object3d->getz(position1),0);
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tMapareData->setcx(object3d->getx(position2),1);
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tMapareData->setcy(object3d->gety(position2),1);
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tMapareData->setcz(object3d->getz(position2),1);
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tMapareData->setcx(object3d->getx(position3),2);
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tMapareData->setcy(object3d->gety(position3),2);
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tMapareData->setcz(object3d->getz(position3),2);
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tMapareData->setu(object3d->getvu(pos1),0);
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tMapareData->setv(object3d->getvv(pos1),0);
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tMapareData->setg(object3d->getgouraud(pos1),0);
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tMapareData->setu(object3d->getvu(pos2),1);
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tMapareData->setv(object3d->getvv(pos2),1);
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tMapareData->setg(object3d->getgouraud(pos2),1);
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tMapareData->setu(object3d->getvu(pos3),2);
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tMapareData->setv(object3d->getvv(pos3),2);
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tMapareData->setg(object3d->getgouraud(pos3),2);
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// clip against front z
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clipZ(tMapareDataList, zNear, 0, 0);
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tMapareData->setcliped(0);
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tMapareData=tMapareDataList->getObject(1);
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tMapareData->setcliped(0);
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//clip against back z
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for ( int ipc=0 ; ipc<numberOfPolygons ; ipc++ )
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{
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tMapareData=tMapareDataList->getObject(ipc);
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if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
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{
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clipZ(tMapareDataList, zFar, ipc, 1);
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}
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}
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clearSetCliped(tMapareDataList);
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// clip against xleft
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float s=xpangs;
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float c=xpangc;
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planex=s;
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planey=0;
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planez=c;
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planedist=0;
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for ( int pc=0 ; pc<numberOfPolygons ; pc++ )
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{
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tMapareData=tMapareDataList->getObject(pc);
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if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
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{
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clipXY(tMapareDataList, screenWidth, pc);
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}
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}
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// clip against xright
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clearSetCliped(tMapareDataList);
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planex=-s;
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for ( int pc2=0 ; pc2<numberOfPolygons ; pc2++ )
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{
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tMapareData=tMapareDataList->getObject(pc2);
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if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
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{
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clipXY(tMapareDataList, screenWidth, pc2);
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}
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}
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// clip against ytop
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clearSetCliped(tMapareDataList);
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s=ypangs;
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c=ypangc;
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planex=0;
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planey=s;
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planez=c;
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planedist=0;
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for ( int pc3=0 ; pc3<numberOfPolygons ; pc3++ )
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{
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tMapareData=tMapareDataList->getObject(pc3);
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if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
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{
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clipXY(tMapareDataList, screenWidth, pc3);
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}
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}
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// clip against ybottom
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clearSetCliped(tMapareDataList);
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planey=-s;
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for ( int pc4=0 ; pc4<numberOfPolygons ; pc4++ )
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{
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tMapareData=tMapareDataList->getObject(pc4);
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if ( tMapareData->getexsists() == 1 && tMapareData->getcliped() == 0)
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{
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clipXY(tMapareDataList, screenWidth, pc4);
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}
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}
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// removepolygon(tmapare_);
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}
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//*********************************************************************
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//reset all clip polygons
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//*********************************************************************
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void Clipping3d::clearSetCliped(ObjectArray<TMapareData> *tMapareDataList)
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{
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for ( int ex=0; ex<numberOfPolygons ; ex++ )
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{
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TMapareData *tMapareData=tMapareDataList->getObject(ex);
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tMapareData->setcliped(0);
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}
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}
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//*********************************************************************
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//calc x,y clip planes
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//*********************************************************************
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void Clipping3d::calcPlane(int screenWidth, int screenHeight)
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{
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float xsize=(float)screenWidth;
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float ysize=(float)screenHeight;
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float xpang=(float)atan(2.0f/2.0f*((xsize))/(((xsize-2)*0.5f)-1.0f));
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float ypang=(float)atan(2.0f/2.0f*((ysize))/(((ysize-1)*0.5f)-1.0f));
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xpangs=(float)sin(xpang);
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xpangc=(float)cos(xpang);
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ypangs=(float)sin(ypang);
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ypangc=(float)cos(ypang);
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}
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//*********************************************************************
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//remove polygons that is not visibly
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//*********************************************************************
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int Clipping3d::removePolygon2d(TPolytri *tPolytri)
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{
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if (tPolytri->x1 >= (screenWidth-1) )
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{
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tPolytri->x1=(float)(screenWidth-1);
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}
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if (tPolytri->x2 >= (screenWidth-1) )
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{
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tPolytri->x2=(float)(screenWidth-1);
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}
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if (tPolytri->x3 >= (screenWidth-1) )
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{
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| 281 |
tPolytri->x3=(float)(screenWidth-1);
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}
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| 283 |
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| 284 |
if (tPolytri->y1 >= (screenHeight-1) )
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{
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tPolytri->y1=(float)(screenHeight-1);
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}
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| 288 |
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if (tPolytri->y2 >= (screenHeight-1) )
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{
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tPolytri->y2=(float)(screenHeight-1);
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}
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if (tPolytri->y3 >= (screenHeight-1) )
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{
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tPolytri->y3=(float)(screenHeight-1);
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}
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| 299 |
if (tPolytri->x1 < 1 )
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{
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tPolytri->x1=1;
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}
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if (tPolytri->x2 < 1 )
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{
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tPolytri->x2=1;
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}
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| 308 |
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| 309 |
if (tPolytri->x3 < 1 )
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{
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tPolytri->x3=1;
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}
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| 314 |
if (tPolytri->y1 < 1 )
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| 315 |
{
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| 316 |
tPolytri->y1=1;
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}
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| 318 |
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| 319 |
if (tPolytri->y2 < 1 )
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| 320 |
{
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| 321 |
tPolytri->y2=1;
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| 322 |
}
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| 324 |
if (tPolytri->y3 < 1 )
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{
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| 326 |
tPolytri->y3=1;
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}
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| 328 |
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int sant=0;
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| 330 |
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if ( tPolytri->x1 >= 1 && tPolytri->x1 < screenWidth && tPolytri->y1 >= 1 && tPolytri->y1 < screenHeight )
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| 332 |
{
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sant++;
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}
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| 335 |
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if ( tPolytri->x2 >= 1 && tPolytri->x2 < screenWidth && tPolytri->y2 >= 1 && tPolytri->y2 < screenHeight )
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| 337 |
{
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| 338 |
sant++;
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}
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if ( tPolytri->x3 >= 1 && tPolytri->x3 < screenWidth && tPolytri->y3 >= 1 && tPolytri->y3 < screenHeight )
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| 342 |
{
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| 343 |
sant++;
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| 344 |
}
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| 345 |
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| 346 |
return sant;
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| 347 |
}
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| 348 |
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| 349 |
void Clipping3d::removePolygon(ObjectArray<TMapareData> *tMapareDataList )
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| 350 |
{
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| 351 |
for ( int ex=0; ex<numberOfPolygons ; ex++ )
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| 352 |
{
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| 353 |
TMapareData *tMapareData=((TMapareData*)tMapareDataList->getObject(ex));
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| 354 |
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| 355 |
if ( tMapareData->getexsists() == 1 )
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| 356 |
{
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| 357 |
if (removePolygonXY(tMapareData) != 0)
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| 358 |
{
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| 359 |
tMapareData->setexsists(0);
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| 360 |
}
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| 361 |
}
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| 362 |
}
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| 363 |
}
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| 364 |
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| 365 |
int Clipping3d::removePolygon(TMapareData *tMapareData)
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| 366 |
{
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| 367 |
int ex=0;
|
| 368 |
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| 369 |
for ( int cp=0; cp<3; cp++ )
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| 370 |
{
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| 371 |
tMapareData->curdot[cp]=(tMapareData->getcx(cp)*planex)+(tMapareData->getcy(cp)*planey)+(tMapareData->getcz(cp)*planez);
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| 372 |
}
|
| 373 |
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| 374 |
for ( int cp2=0; cp2<3 ;cp2++ )
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| 375 |
{
|
| 376 |
if ( tMapareData->curdot[cp2]+0.1f < planedist )
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| 377 |
{
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| 378 |
ex++;
|
| 379 |
}
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| 380 |
}
|
| 381 |
|
| 382 |
return ex;
|
| 383 |
}
|
| 384 |
|
| 385 |
int Clipping3d::removePolygonXY(TMapareData *tMapareData)
|
| 386 |
{
|
| 387 |
int ex=0;
|
| 388 |
|
| 389 |
float s=xpangs;
|
| 390 |
float c=xpangc;
|
| 391 |
|
| 392 |
planex=s;
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| 393 |
planey=0;
|
| 394 |
planez=c;
|
| 395 |
planedist=0;
|
| 396 |
|
| 397 |
ex+=removePolygon(tMapareData);
|
| 398 |
|
| 399 |
planex=-s;
|
| 400 |
|
| 401 |
ex+=removePolygon(tMapareData);
|
| 402 |
|
| 403 |
s=ypangs;
|
| 404 |
c=ypangc;
|
| 405 |
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| 406 |
planex=0;
|
| 407 |
planey=s;
|
| 408 |
planez=c;
|
| 409 |
planedist=0;
|
| 410 |
|
| 411 |
ex+=removePolygon(tMapareData);
|
| 412 |
planey=-s;
|
| 413 |
|
| 414 |
ex+=removePolygon(tMapareData);
|
| 415 |
|
| 416 |
return ex;
|
| 417 |
}
|
| 418 |
|
| 419 |
//*********************************************************************
|
| 420 |
//clip against x,y
|
| 421 |
//*********************************************************************
|
| 422 |
|
| 423 |
void Clipping3d::clipXY(ObjectArray<TMapareData> *tMapareDataList , int screenwidth, int pc)
|
| 424 |
{
|
| 425 |
TMapareData *tMapareData=tMapareDataList->getObject(pc);
|
| 426 |
|
| 427 |
for ( int cp=0; cp<3; cp++ )
|
| 428 |
{
|
| 429 |
tMapareData->curdot[cp]=(tMapareData->getcx(cp)*planex)+(tMapareData->getcy(cp)*planey)+(tMapareData->getcz(cp)*planez);
|
| 430 |
}
|
| 431 |
|
| 432 |
float x=0;
|
| 433 |
int ap=0;
|
| 434 |
int position[4]={0,0,0,0};
|
| 435 |
int r=1;
|
| 436 |
|
| 437 |
for ( int pp=0; pp<3 ; pp++ )
|
| 438 |
{
|
| 439 |
if ( tMapareData->curdot[pp] >= planedist )
|
| 440 |
{
|
| 441 |
position[0]=pp;
|
| 442 |
ap++;
|
| 443 |
}
|
| 444 |
else
|
| 445 |
{
|
| 446 |
position[r]=pp;
|
| 447 |
r++;
|
| 448 |
}
|
| 449 |
}
|
| 450 |
|
| 451 |
if ( ap == 1 )
|
| 452 |
{
|
| 453 |
int n=0;
|
| 454 |
int k=1;
|
| 455 |
|
| 456 |
float f=((tMapareData->curdot[position[k]])/(tMapareData->curdot[position[n]]-tMapareData->curdot[position[k]]));
|
| 457 |
interpolateClipXY(tMapareData, f , k, n, position,x);
|
| 458 |
|
| 459 |
n=0;
|
| 460 |
k=2;
|
| 461 |
|
| 462 |
f=((tMapareData->curdot[position[k]])/(tMapareData->curdot[position[n]]-tMapareData->curdot[position[k]]));
|
| 463 |
interpolateClipXY(tMapareData, f , k, n, position,x);
|
| 464 |
}
|
| 465 |
|
| 466 |
ap=0;
|
| 467 |
r=1;
|
| 468 |
|
| 469 |
for ( int pp2=0; pp2<3 ; pp2++ )
|
| 470 |
{
|
| 471 |
if ( tMapareData->curdot[pp2] < planedist )
|
| 472 |
{
|
| 473 |
position[0]=pp2;
|
| 474 |
ap++;
|
| 475 |
}
|
| 476 |
else
|
| 477 |
{
|
| 478 |
position[r]=pp2;
|
| 479 |
r++;
|
| 480 |
}
|
| 481 |
}
|
| 482 |
|
| 483 |
if ( ap == 1 )
|
| 484 |
{
|
| 485 |
int pc2=newPolygonClipXY(tMapareDataList,pc);
|
| 486 |
TMapareData *tMapareData2=((TMapareData*)tMapareDataList->getObject(pc2));
|
| 487 |
|
| 488 |
int n=1;
|
| 489 |
int k=0;
|
| 490 |
|
| 491 |
float f=((tMapareData->curdot[position[k]])/(tMapareData->curdot[position[n]]-tMapareData->curdot[position[k]]));
|
| 492 |
interpolateClipXY(tMapareData, f , k, n, position,x);
|
| 493 |
|
| 494 |
n=2;
|
| 495 |
k=0;
|
| 496 |
|
| 497 |
f=((tMapareData2->curdot[position[k]]-planedist)/(tMapareData2->curdot[position[n]]-tMapareData2->curdot[position[k]]));
|
| 498 |
interpolateClipXY(tMapareData2, f , k, n, position,x);
|
| 499 |
|
| 500 |
copyPolygonPointClipXY(tMapareData2, tMapareData, position[1], position[0]);
|
| 501 |
}
|
| 502 |
}
|
| 503 |
|
| 504 |
//*********************************************************************
|
| 505 |
// interpolate x,y,z,u,v,g value against the x,y clip plane
|
| 506 |
//*********************************************************************
|
| 507 |
|
| 508 |
void Clipping3d::interpolateClipXY(TMapareData *tMapareData, float f , int k, int n, int *position, float x)
|
| 509 |
{
|
| 510 |
if ( f < 0 )
|
| 511 |
{
|
| 512 |
f*=-1;
|
| 513 |
}
|
| 514 |
|
| 515 |
float z=tMapareData->getcz(position[n]);
|
| 516 |
float z2=tMapareData->getcz(position[k]);
|
| 517 |
|
| 518 |
float xs=tMapareData->getcx(position[n])-tMapareData->getcx(position[k]);
|
| 519 |
float ys=tMapareData->getcy(position[n])-tMapareData->getcy(position[k]);
|
| 520 |
float zs=z-z2;
|
| 521 |
float us=tMapareData->getu(position[n])-tMapareData->getu(position[k]);
|
| 522 |
float vs=tMapareData->getv(position[n])-tMapareData->getv(position[k]);
|
| 523 |
float gs=tMapareData->getg(position[n])-tMapareData->getg(position[k]);
|
| 524 |
|
| 525 |
tMapareData->setcx(tMapareData->getcx(position[k])+(f*(xs)),position[k]);
|
| 526 |
tMapareData->setcy(tMapareData->getcy(position[k])+(f*(ys)),position[k]);
|
| 527 |
z2+=(f*(zs));
|
| 528 |
tMapareData->setcz(z2,position[k]);
|
| 529 |
tMapareData->setu(tMapareData->getu(position[k])+((f)*(us)),position[k]);
|
| 530 |
tMapareData->setv(tMapareData->getv(position[k])+((f)*(vs)),position[k]);
|
| 531 |
tMapareData->setg(tMapareData->getg(position[k])+((f)*(gs)),position[k]);
|
| 532 |
}
|
| 533 |
|
| 534 |
//*********************************************************************
|
| 535 |
//create a new polygon
|
| 536 |
//*********************************************************************
|
| 537 |
|
| 538 |
int Clipping3d::newPolygonClipXY(ObjectArray<TMapareData> *tMapareDataList, int e )
|
| 539 |
{
|
| 540 |
int t=0;
|
| 541 |
int end=0;
|
| 542 |
int tempt;
|
| 543 |
|
| 544 |
while ( t < numberOfPolygons && end == 0)
|
| 545 |
{
|
| 546 |
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
| 547 |
|
| 548 |
if ( tMapareData->getexsists() == 0 )
|
| 549 |
{
|
| 550 |
tMapareData->setexsists(1);
|
| 551 |
tMapareData->setcliped(1);
|
| 552 |
end=1;
|
| 553 |
tempt=t;
|
| 554 |
}
|
| 555 |
|
| 556 |
t++;
|
| 557 |
}
|
| 558 |
|
| 559 |
t=tempt;
|
| 560 |
|
| 561 |
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
| 562 |
TMapareData *tMapareData2=tMapareDataList->getObject(e);
|
| 563 |
|
| 564 |
for ( int i=0 ; i<3 ; i++ )
|
| 565 |
{
|
| 566 |
tMapareData->setcx(tMapareData2->getcx(i),i);
|
| 567 |
tMapareData->setcy(tMapareData2->getcy(i),i);
|
| 568 |
tMapareData->setcz(tMapareData2->getcz(i),i);
|
| 569 |
tMapareData->setu(tMapareData2->getu(i),i);
|
| 570 |
tMapareData->setv(tMapareData2->getv(i),i);
|
| 571 |
tMapareData->setg(tMapareData2->getg(i),i);
|
| 572 |
tMapareData->curdot[i]=tMapareData2->curdot[i];
|
| 573 |
}
|
| 574 |
|
| 575 |
return t;
|
| 576 |
}
|
| 577 |
|
| 578 |
//*********************************************************************
|
| 579 |
//copy clipxy polygon
|
| 580 |
//*********************************************************************
|
| 581 |
|
| 582 |
void Clipping3d::copyPolygonPointClipXY(TMapareData *tMapareData, TMapareData *tMapareData2, int i, int i2)
|
| 583 |
{
|
| 584 |
tMapareData->setcx(tMapareData2->getcx(i2),i);
|
| 585 |
tMapareData->setcy(tMapareData2->getcy(i2),i);
|
| 586 |
tMapareData->setcz(tMapareData2->getcz(i2),i);
|
| 587 |
tMapareData->setu(tMapareData2->getu(i2),i);
|
| 588 |
tMapareData->setv(tMapareData2->getv(i2),i);
|
| 589 |
tMapareData->setg(tMapareData2->getg(i2),i);
|
| 590 |
tMapareData->curdot[i]=tMapareData2->curdot[i2];
|
| 591 |
}
|
| 592 |
|
| 593 |
//*********************************************************************
|
| 594 |
//clip against z
|
| 595 |
//*********************************************************************
|
| 596 |
|
| 597 |
void Clipping3d::clipZ(ObjectArray<TMapareData> *tMapareDataList, float zNearOrFar, int pc , int choise)
|
| 598 |
{
|
| 599 |
int ap=0;
|
| 600 |
int position[4]={0,0,0,0};
|
| 601 |
int r=1;
|
| 602 |
TMapareData *tMapareData=tMapareDataList->getObject(pc);
|
| 603 |
|
| 604 |
if ( choise == 0 )
|
| 605 |
{
|
| 606 |
for ( int pp=0; pp<3 ; pp++ )
|
| 607 |
{
|
| 608 |
if (tMapareData->getcz(pp) >= zNearOrFar)
|
| 609 |
{
|
| 610 |
position[0]=pp;
|
| 611 |
ap++;
|
| 612 |
}
|
| 613 |
else
|
| 614 |
{
|
| 615 |
position[r]=pp;
|
| 616 |
r++;
|
| 617 |
}
|
| 618 |
}
|
| 619 |
}
|
| 620 |
else
|
| 621 |
{
|
| 622 |
for ( int pp=0; pp<3 ; pp++ )
|
| 623 |
{
|
| 624 |
|
| 625 |
if ( zNearOrFar >= tMapareData->getcz(pp) )
|
| 626 |
{
|
| 627 |
position[0]=pp;
|
| 628 |
ap++;
|
| 629 |
}
|
| 630 |
else
|
| 631 |
{
|
| 632 |
position[r]=pp;
|
| 633 |
r++;
|
| 634 |
}
|
| 635 |
}
|
| 636 |
}
|
| 637 |
|
| 638 |
if ( ap == 1 )
|
| 639 |
{
|
| 640 |
int n;
|
| 641 |
int k;
|
| 642 |
|
| 643 |
n=0;
|
| 644 |
k=1;
|
| 645 |
|
| 646 |
float z=tMapareData->getcz(position[k]);
|
| 647 |
float z2=tMapareData->getcz(position[n]);
|
| 648 |
|
| 649 |
z2=z2-z;
|
| 650 |
float tempzc=zNearOrFar;
|
| 651 |
tempzc-=z;
|
| 652 |
tempzc/=z2;
|
| 653 |
|
| 654 |
calcClipZ(tMapareDataList, zNearOrFar, pc , k, n, position, tempzc);
|
| 655 |
|
| 656 |
n=0;
|
| 657 |
k=2;
|
| 658 |
|
| 659 |
z=tMapareData->getcz(position[k]);
|
| 660 |
z2=tMapareData->getcz(position[n]);
|
| 661 |
|
| 662 |
z2=z2-z;
|
| 663 |
tempzc=zNearOrFar;
|
| 664 |
tempzc-=z;
|
| 665 |
tempzc/=z2;
|
| 666 |
|
| 667 |
calcClipZ(tMapareDataList, zNearOrFar, pc , k, n, position, tempzc);
|
| 668 |
}
|
| 669 |
|
| 670 |
|
| 671 |
ap=0;
|
| 672 |
r=1;
|
| 673 |
|
| 674 |
if ( choise == 0 )
|
| 675 |
{
|
| 676 |
for ( int pp2=0; pp2<3 ; pp2++ )
|
| 677 |
{
|
| 678 |
if ( tMapareData->getcz(pp2) < zNearOrFar )
|
| 679 |
{
|
| 680 |
position[0]=pp2;
|
| 681 |
ap++;
|
| 682 |
}
|
| 683 |
else
|
| 684 |
{
|
| 685 |
position[r]=pp2;
|
| 686 |
r++;
|
| 687 |
}
|
| 688 |
}
|
| 689 |
}
|
| 690 |
else
|
| 691 |
{
|
| 692 |
for ( int pp2=0; pp2<3 ; pp2++ )
|
| 693 |
{
|
| 694 |
if ( zNearOrFar < tMapareData->getcz(pp2) )
|
| 695 |
{
|
| 696 |
position[0]=pp2;
|
| 697 |
ap++;
|
| 698 |
}
|
| 699 |
else
|
| 700 |
{
|
| 701 |
position[r]=pp2;
|
| 702 |
r++;
|
| 703 |
}
|
| 704 |
}
|
| 705 |
}
|
| 706 |
|
| 707 |
if ( ap == 1 )
|
| 708 |
{
|
| 709 |
int pc2=newPolygonClipZ(tMapareDataList,pc);
|
| 710 |
TMapareData *tMapareData2=tMapareDataList->getObject(pc2);
|
| 711 |
|
| 712 |
int n;
|
| 713 |
int k;
|
| 714 |
|
| 715 |
n=1;
|
| 716 |
k=0;
|
| 717 |
|
| 718 |
float z=tMapareData->getcz(position[k]);
|
| 719 |
float z2=tMapareData->getcz(position[n]);
|
| 720 |
|
| 721 |
z2=z2-z;
|
| 722 |
float tempzc=zNearOrFar;
|
| 723 |
tempzc-=z;
|
| 724 |
tempzc/=z2;
|
| 725 |
|
| 726 |
calcClipZ(tMapareDataList, zNearOrFar, pc , k, n, position, tempzc);
|
| 727 |
|
| 728 |
n=2;
|
| 729 |
k=0;
|
| 730 |
|
| 731 |
z=tMapareData2->getcz(position[k]);
|
| 732 |
z2=tMapareData2->getcz(position[n]);
|
| 733 |
|
| 734 |
z2=z2-z;
|
| 735 |
tempzc=zNearOrFar;
|
| 736 |
tempzc-=z;
|
| 737 |
tempzc/=z2;
|
| 738 |
|
| 739 |
calcClipZ(tMapareDataList, zNearOrFar, pc2 , k, n, position, tempzc);
|
| 740 |
|
| 741 |
copyPolygonPointClipZ(tMapareData2, tMapareData, position[1], position[0]);
|
| 742 |
}
|
| 743 |
}
|
| 744 |
|
| 745 |
//*********************************************************************
|
| 746 |
//calc interpolation z
|
| 747 |
//*********************************************************************
|
| 748 |
|
| 749 |
void Clipping3d::calcClipZ(ObjectArray<TMapareData> *tMapareDataList, float zNearOrFar, int pc , int k, int n, int *position, float tempzc)
|
| 750 |
{
|
| 751 |
TMapareData *tMapareData=tMapareDataList->getObject(pc);
|
| 752 |
|
| 753 |
tMapareData->setcx(interpolateClipZ(tMapareData->getcx(position[k]),tMapareData->getcx(position[n]),tempzc),position[k]);
|
| 754 |
tMapareData->setcy(interpolateClipZ(tMapareData->getcy(position[k]),tMapareData->getcy(position[n]),tempzc),position[k]);
|
| 755 |
tMapareData->setcz(zNearOrFar,position[k]);
|
| 756 |
tMapareData->setu(interpolateClipZ(tMapareData->getu(position[k]),tMapareData->getu(position[n]),tempzc),position[k]);
|
| 757 |
tMapareData->setv(interpolateClipZ(tMapareData->getv(position[k]),tMapareData->getv(position[n]),tempzc),position[k]);
|
| 758 |
tMapareData->setg(interpolateClipZ(tMapareData->getg(position[k]),tMapareData->getg(position[n]),tempzc),position[k]);
|
| 759 |
}
|
| 760 |
|
| 761 |
//*********************************************************************
|
| 762 |
//clip against z
|
| 763 |
//*********************************************************************
|
| 764 |
|
| 765 |
int Clipping3d::newPolygonClipZ(ObjectArray<TMapareData> *tMapareDataList, int e )
|
| 766 |
{
|
| 767 |
int t=0;
|
| 768 |
int end=0;
|
| 769 |
int tempt;
|
| 770 |
|
| 771 |
while ( t < numberOfPolygons && end == 0)
|
| 772 |
{
|
| 773 |
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
| 774 |
|
| 775 |
if ( tMapareData->getexsists() == 0 )
|
| 776 |
{
|
| 777 |
tMapareData->setexsists(1);
|
| 778 |
tMapareData->setcliped(1);
|
| 779 |
end=1;
|
| 780 |
tempt=t;
|
| 781 |
}
|
| 782 |
|
| 783 |
t++;
|
| 784 |
}
|
| 785 |
|
| 786 |
t=tempt;
|
| 787 |
|
| 788 |
TMapareData *tMapareData=tMapareDataList->getObject(t);
|
| 789 |
TMapareData *tMapareData2=tMapareDataList->getObject(e);
|
| 790 |
|
| 791 |
for ( int i=0 ; i<3 ; i++ )
|
| 792 |
{
|
| 793 |
tMapareData->setcx(tMapareData2->getcx(i),i);
|
| 794 |
tMapareData->setcy(tMapareData2->getcy(i),i);
|
| 795 |
tMapareData->setcz(tMapareData2->getcz(i),i);
|
| 796 |
tMapareData->setu(tMapareData2->getu(i),i);
|
| 797 |
tMapareData->setv(tMapareData2->getv(i),i);
|
| 798 |
tMapareData->setg(tMapareData2->getg(i),i);
|
| 799 |
tMapareData->curdot[i]=tMapareData2->curdot[i];
|
| 800 |
}
|
| 801 |
|
| 802 |
return t;
|
| 803 |
}
|
| 804 |
|
| 805 |
//*********************************************************************
|
| 806 |
//interpolate z
|
| 807 |
//*********************************************************************
|
| 808 |
|
| 809 |
float Clipping3d::interpolateClipZ(float temp, float temp2, float d7f)
|
| 810 |
{
|
| 811 |
temp2=(temp2-temp)*d7f;
|
| 812 |
temp2+=temp;
|
| 813 |
return temp2;
|
| 814 |
}
|
| 815 |
|
| 816 |
//*********************************************************************
|
| 817 |
//copy z polygonpoint
|
| 818 |
//*********************************************************************
|
| 819 |
|
| 820 |
void Clipping3d::copyPolygonPointClipZ(TMapareData *tMapareData, TMapareData *tMapareData2, int i, int i2)
|
| 821 |
{
|
| 822 |
tMapareData->setcx(tMapareData2->getcx(i2),i);
|
| 823 |
tMapareData->setcy(tMapareData2->getcy(i2),i);
|
| 824 |
tMapareData->setcz(tMapareData2->getcz(i2),i);
|
| 825 |
tMapareData->setu(tMapareData2->getu(i2),i);
|
| 826 |
tMapareData->setv(tMapareData2->getv(i2),i);
|
| 827 |
tMapareData->setg(tMapareData2->getg(i2),i);
|
| 828 |
tMapareData->curdot[i]=tMapareData2->curdot[i2];
|
| 829 |
} |
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