/**
* Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/1a5z
*/
package {
import flash.events.Event;
import flash.display.Sprite;
public class FlashTest extends Sprite {
public function FlashTest() {
stage.addEventListener(Event.ENTER_FRAME, onEnter);
}//ctor
public function onEnter(e:Event):void
{
graphics.clear();
graphics.lineStyle(1,0);
/*
calcFrust(90, 1.0, 0.1, 100.0,
200,200,-50,
0,0,1,
0,1,0,
1,0,0);
*/
var sx:Number;
var sy:Number;
sx = Math.cos(3.14 / 8);
sy = Math.sin(3.14 / 8);
calcFrust(90, 1.0, 0.1, 100.0,
200,200,-50,
0,0,1,
-sy,sx,0,
sx,sy,0);
}//onenter
public var minx:Number = 0;
public var miny:Number = 0;
public var maxx:Number = 0;
public var maxy:Number = 0;
public static function lineZedInter(
v0x:Number, v0y:Number, v0z:Number,
v1x:Number, v1y:Number, v1z:Number
):Number
{
//0,0,0 //p
//0,0,-1 //n
var dx:Number; var dy:Number; var dz:Number;
var vx:Number; var vy:Number; var vz:Number;
var ndotv:Number;
vx = v1x - v0x;
vy = v1y - v0y;
vz = v1z - v0z;
dx = 0 - v0x;
dy = 0 - v0y;
dz = 0 - v0z;
if (v0z == 0) { return -99999; }
return (v0z / -(v1z - v0z));
/*
ndotv = (vx * 0) + (vy * 0) + (vz * -1);
if (ndotv == 0) { return -99999; } //line and plane parallel, no inters
return ( (0*dx) +(0*dy) + (-1*dz)/ ndotv );
return ( ( ( nx * dx) + (ny * dy) + (nz * dz) ) / ndotv );
*/
}//linezed
/*
public static function linePlaneInter(
v0x:Number, v0y:Number, v0z:Number,
v1x:Number, v1y:Number, v1z:Number,
px:Number, py:Number, pz:Number,
nx:Number, ny:Number, nz:Number
):Number
{
var dx:Number; var dy:Number; var dz:Number;
var vx:Number; var vy:Number; var vz:Number;
var ndotv:Number;
vx = v1x - v0x;
vy = v1y - v0y;
vz = v1z - v0z;
dx = px - v0x;
dy = py - v0y;
dz = pz - v0z;
ndotv = (vx * nx) + (vy * ny) + (vz * nz);
if (ndotv == 0) { return -99999; } //line and plane parallel, no inters
return ( ( ( nx * dx) + (ny * dy) + (nz * dz) ) / ndotv );
}//linepinter
*/
public function calcFrust(
fov:Number, aspect:Number, neard:Number, fard:Number,
posx:Number, posy:Number, posz:Number,
frontx:Number, fronty:Number, frontz:Number,
upx:Number, upy:Number, upz:Number,
sidex:Number, sidey:Number, sidez:Number):void
{
var nw:Number;
var nh:Number;
var fw:Number;
var fh:Number;
var tang:Number;
var fupx:Number, fupy:Number, fupz:Number;
var fsidex:Number, fsidey:Number, fsidez:Number;
var nupx:Number, nupy:Number, nupz:Number;
var nsidex:Number, nsidey:Number, nsidez:Number;
var fcx:Number, fcy:Number, fcz:Number;
var ncx:Number, ncy:Number, ncz:Number;
fov *= 3.1415 / 180;
tang = Math.tan ( fov * 0.5 );
nh = neard * tang;
nw = nh * aspect;
fh = fard * tang;
fw = fh * aspect;
fupx = upx * fh;
fupy = upy * fh;
fupz = upz * fh;
fsidex = sidex * fw;
fsidey = sidey * fw;
fsidez = sidez * fw;
nupx = upx * nh;
nupy = upy * nh;
nupz = upz * nh;
nsidex = sidex * nw;
nsidey = sidey * nw;
nsidez = sidez * nw;
fcx = posx + frontx * fard;
fcy = posy + fronty * fard;
fcz = posz + frontz * fard;
ncx = posx + frontx * neard;
ncy = posy + fronty * neard;
ncz = posz + frontz * neard;
var ax:Number;
var ay:Number;
var az:Number;
var bx:Number;
var by:Number;
var bz:Number;
var t:Number;
var kx:Number;
var ky:Number;
var kz:Number;
minx = 999999;
miny = 999999;
maxx = -999999;
maxy = -999999;
ax = ncx + (nupx*1)+(nsidex*1);
ay = ncy + (nupy*1)+(nsidey*1);
az = ncz + (nupz*1)+(nsidez*1);
bx = fcx + (fupx*1)+(fsidex*1);
by = fcy + (fupy*1)+(fsidey*1);
bz = fcz + (fupz*1)+(fsidez*1);
t = (az / -(bz - az));
kx = ax + (bx-ax)*t;
ky = ay + (by-ay)*t;
graphics.drawCircle(kx,ky,4);
//kz = az + (bz-ay)*t;
minx = minx < kx ? minx : kx; // Math.min(minx, kx);
miny = miny < ky ? miny : ky; // Math.min(miny, ky);
maxx = maxx > kx ? maxx : kx; // Math.max(maxx, kx);
maxy = maxy > ky ? maxy : ky; // Math.max(maxx, ky);
graphics.drawCircle(ncx,ncy, 8);
graphics.drawCircle(ax,ay, 4);
graphics.drawCircle(bx,by,2);
ax = ncx + (nupx*-1)+(nsidex*1);
ay = ncy + (nupy*-1)+(nsidey*1);
az = ncz + (nupz*-1)+(nsidez*1);
bx = fcx + (fupx*-1)+(fsidex*1);
by = fcy + (fupy*-1)+(fsidey*1);
bz = fcz + (fupz*-1)+(fsidez*1);
graphics.drawCircle(bx,by,2);
t = (az / -(bz - az));
kx = ax + (bx-ax)*t;
ky = ay + (by-ay)*t;
graphics.drawCircle(kx,ky,4);
minx = minx < kx ? minx : kx;
miny = miny < ky ? miny : ky;
maxx = maxx > kx ? maxx : kx;
maxy = maxy > ky ? maxy : ky;
ax = ncx + (nupx*-1)+(nsidex*-1);
ay = ncy + (nupy*-1)+(nsidey*-1);
az = ncz + (nupz*-1)+(nsidez*-1);
bx = fcx + (fupx*-1)+(fsidex*-1);
by = fcy + (fupy*-1)+(fsidey*-1);
bz = fcz + (fupz*-1)+(fsidez*-1);
graphics.drawCircle(bx,by,2);
t = (az / -(bz - az));
kx = ax + (bx-ax)*t;
ky = ay + (by-ay)*t;
graphics.drawCircle(kx,ky,4);
minx = minx < kx ? minx : kx;
miny = miny < ky ? miny : ky;
maxx = maxx > kx ? maxx : kx;
maxy = maxy > ky ? maxy : ky;
ax = ncx + (nupx*1)+(nsidex*-1);
ay = ncy + (nupy*1)+(nsidey*-1);
az = ncz + (nupz*1)+(nsidez*-1);
bx = fcx + (fupx*1)+(fsidex*-1);
by = fcy + (fupy*1)+(fsidey*-1);
bz = fcz + (fupz*1)+(fsidez*-1);
graphics.drawCircle(bx,by,2);
t = (az / -(bz - az));
kx = ax + (bx-ax)*t;
ky = ay + (by-ay)*t;
graphics.drawCircle(kx,ky,4);
minx = minx < kx ? minx : kx;
miny = miny < ky ? miny : ky;
maxx = maxx > kx ? maxx : kx;
maxy = maxy > ky ? maxy : ky;
graphics.drawCircle(minx,miny, 16);
graphics.drawCircle(maxx, maxy, 16);
graphics.drawRect(minx,miny, maxx-minx, maxy-miny);
}//calcmouse
}//classend
}
