forked from: 追尾カメラ
/**
* Copyright uwi ( http://wonderfl.net/user/uwi )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/4X5B
*/
// forked from uwi's 追尾カメラ
package {
import org.papervision3d.view.BasicView;
import flash.text.TextField;
import flash.events.Event;
import flash.events.MouseEvent;
import net.hires.debug.Stats;
import org.papervision3d.objects.primitives.*;
import org.papervision3d.objects.*;
import org.papervision3d.core.math.*;
import org.papervision3d.core.proto.*;
import org.papervision3d.materials.*;
import org.papervision3d.materials.special.*;
import org.papervision3d.objects.special.*;
import com.bit101.components.*;
import flash.geom.*;
[SWF(backgroundColor="0x000000", frameRate="60")]
import flash.accessibility.Accessibility;
public class PV3D extends BasicView {
private var _tf : TextField;
private var _pp : PaperPlane;
private var _XX : Number;
private var _YY : Number;
private var _ZZ : Number;
private var _t : Number;
private var _next : DisplayObject3D;
private var _ppup : Number3D;
private var _prevDir : Number3D = null;
private var _cameras : Array;
public function PV3D() {
super(0, 0, true, false);
graphics.beginFill(0x000000);
graphics.drawRect(0, 0, 465, 465);
graphics.endFill();
scene.addChild(new ParticleField(new ParticleMaterial(0xffff99, 0.8, 0), 3000, 2, 1300, 1300, 1300));
var wm : MaterialObject3D = new WireframeMaterial(0xffffff, 0.5);
wm.doubleSided = true;
_pp = new PaperPlane(wm);
scene.addChild(_pp);
_XX = 1 + Math.random();
_YY = 1 + Math.random();
_ZZ = 1 + Math.random();
_t = Math.random() * 100;
_next = new DisplayObject3D();
// カメラ
_cameras = [];
var tc : TrackingCamera = new TrackingCamera(_pp, new Number3D(0, 1, 0));
tc.x = 0; tc.y = 0; tc.z = 0;
_cameras.push(tc);
var rc : RidingCamera = new RidingCamera(_pp, new Number3D(0, 1, 0));
_cameras.push(rc);
var sc : OperableSphereCamera = new OperableSphereCamera(
new Number3D(0, 0, 0),
1000,
new Number3D(0, 0, 1),
new Number3D(0, 1, 0),
stage,
0.005,
0.005
);
_cameras.push(sc);
_ppup = null;
_tf = new TextField();
addChild(_tf);
_tf.textColor = 0xffffff;
_tf.width = 100;
_tf.height = 50;
// addChild(new Stats());
_modeCamera = -1;
changeMode();
startRendering();
var btn : PushButton = new PushButton(this, 365, 0, "change", function(e : MouseEvent) : void { changeMode(); });
}
private var _modeCamera : int;
private function changeMode() : void
{
_modeCamera = (_modeCamera + 1) % _cameras.length;
_camera = _cameras[_modeCamera];
_tf.text = ["TrackingCamera", "RidingCamera", "SphereCamera"][_modeCamera];
}
override protected function onRenderTick(e : Event = null) : void
{
_pp.x = 500 * Math.cos(_XX * _t);
_pp.y = 500 * Math.cos(_YY * _t);
_pp.z = 500 * Math.cos(_ZZ * _t);
_next.x = 500 * Math.cos(_XX * (_t + 0.01));
_next.y = 500 * Math.cos(_YY * (_t + 0.01));
_next.z = 500 * Math.cos(_ZZ * (_t + 0.01));
var curDir : Number3D = Number3D.sub(_next.position, _pp.position);
curDir.normalize();
if(_ppup == null){
var x : Number3D = Number3D.cross(new Number3D(0, 1, 0), curDir);
x.normalize();
_ppup = Number3D.cross(x, curDir);
}
if(_prevDir != null){
// 飛行機ヨー用
var X : Number3D = Number3D.cross(_ppup, _prevDir);
var n : Number3D = Number3D.cross(curDir, _prevDir);
// if(n.moduloSquared > 0.00000001){
if(n.moduloSquared != 0){
n.normalize();
var angle : Number = Math.acos(Number3D.dot(_prevDir, curDir));
PV3DUtils.rotate(_ppup, n, angle);
}
var airup : Number3D = _ppup.clone();
var dx : Number = Number3D.dot(curDir, X);
PV3DUtils.rotate(airup, curDir, dx * 10);
_pp.lookAt(_next, airup);
}else{
_pp.lookAt(_next, _ppup);
}
_prevDir = curDir;
TrackingCamera(_cameras[0]).track();
// 3frameほど調整しないといけない
if(ttt < 3){
RidingCamera(_cameras[1])._up = _ppup.clone();
ttt++;
}
RidingCamera(_cameras[1]).move(60, 230);
_t += 0.01;
super.onRenderTick(e);
}
private var ttt : uint = 0;
private function tr(...o : Array) : void
{
_tf.appendText(o + "\n");
_tf.scrollV = _tf.maxScrollV;
}
}
}
import org.papervision3d.objects.*;
import org.papervision3d.core.math.*;
class PV3DUtils
{
public static function rotate(x : Number3D, axis : Number3D, angle : Number) : Number3D
{
var nCos:Number = Math.cos(angle);
var nSin:Number = Math.sin(angle);
var scos:Number = 1 - nCos;
var sxy :Number = axis.x * axis.y * scos;
var syz :Number = axis.y * axis.z * scos;
var sxz :Number = axis.x * axis.z * scos;
var sz :Number = nSin * axis.z;
var sy :Number = nSin * axis.y;
var sx :Number = nSin * axis.x;
var nx : Number = (nCos + axis.x * axis.x * scos) * x.x + (-sz + sxy) * x.y + (sy + sxz) * x.z;
var ny : Number = (sz + sxy) * x.x + (nCos + axis.y * axis.y * scos) * x.y + (-sx + syz) * x.z;
var nz : Number = (-sy + sxz) * x.x + (sx + syz) * x.y + (nCos + axis.z * axis.z * scos) * x.z;
x.x = nx; x.y = ny; x.z = nz;
return x;
}
public static function rotateMulti(xs : Array, axis : Number3D, angle : Number) : void
{
var nCos:Number = Math.cos(angle);
var nSin:Number = Math.sin(angle);
var scos:Number = 1 - nCos;
var sxy :Number = axis.x * axis.y * scos;
var syz :Number = axis.y * axis.z * scos;
var sxz :Number = axis.x * axis.z * scos;
var sz :Number = nSin * axis.z;
var sy :Number = nSin * axis.y;
var sx :Number = nSin * axis.x;
for each(var x : Number3D in xs){
var nx : Number = (nCos + axis.x * axis.x * scos) * x.x + (-sz + sxy) * x.y + (sy + sxz) * x.z;
var ny : Number = (sz + sxy) * x.x + (nCos + axis.y * axis.y * scos) * x.y + (-sx + syz) * x.z;
var nz : Number = (-sy + sxz) * x.x + (sx + syz) * x.y + (nCos + axis.z * axis.z * scos) * x.z;
x.x = nx; x.y = ny; x.z = nz;
}
}
public static function setLookAt(d : DisplayObject3D, front : Number3D, up : Number3D) : void
{
var X : Number3D = Number3D.cross(front, up);
var look : Matrix3D = d.transform;
look.n11 = X.x; look.n21 = X.y; look.n31 = X.z;
look.n12 = -up.x; look.n22 = -up.y; look.n32 = -up.z;
look.n13 = front.x; look.n23 = front.y; look.n33 = front.z;
}
}
import org.papervision3d.cameras.*;
class QCamera3D extends Camera3D
{
public var _up : Number3D; // カメラの上の向きの単位ベクトル
protected var _front : Number3D;
private var _prevDir : Number3D;
public function QCamera3D(up : Number3D, front : Number3D= null)
{
super();
_up = null;
init(up, front);
}
// prevDirからcurDirへ向ける回転を_upにかけるだけ。カメラ自体に操作はしない
public function rotate(curDir : Number3D) : void
{
if(_prevDir != null){
var n : Number3D = Number3D.cross(curDir, _prevDir);
// if(n.moduloSquared > 0.00000001){
if(n.moduloSquared != 0){
n.normalize();
var angle : Number = Math.acos(Number3D.dot(_prevDir, curDir));
if(_front != null){
PV3DUtils.rotate(_front, n, angle);
}
PV3DUtils.rotate(_up, n, angle);
}
}
_prevDir = curDir.clone();
}
// カメラを_frontのほうへ向ける
public function head() : void
{
if(_front != null){
var Z : Number3D = _front.clone();
Z.normalize();
var X : Number3D = Number3D.cross(Z, _up);
X.normalize();
var Y : Number3D = Number3D.cross(Z, X);
Y.normalize();
var look : Matrix3D = this.transform;
look.n11 = X.x*this.scaleX; look.n21 = X.y*this.scaleY; look.n31 = X.z*this.scaleZ;
look.n12 = -Y.x*this.scaleX; look.n22 = -Y.y*this.scaleY; look.n32 = -Y.z*this.scaleZ;
look.n13 = Z.x*this.scaleX; look.n23 = Z.y*this.scaleY; look.n33 = Z.z*this.scaleZ;
}
}
public function init(up : Number3D = null, front : Number3D = null) : void
{
if(up != null){
_up = up.clone();
_up.normalize();
}
if(front != null){
_front = front.clone();
_front.normalize();
}else{
_front = null;
}
_prevDir = null;
}
}
// 球面上を動き、球の中心を見るカメラ
class SphereCamera extends QCamera3D
{
private var _O : Number3D; // 球の中心
private var _R : Number; // 球の半径
// O : 中心座標
// R : 半径
// front : カメラ正面の向きを表す単位ベクトル
// up : カメラ上の向きを表す単位ベクトル
public function SphereCamera(O : Number3D, R : Number, front : Number3D, up : Number3D) : void
{
super(up, front);
_O = O;
_R = R;
move();
}
public function move(x : Number = 0, y : Number = 0) : void
{
if(x != 0 || y != 0){
var X : Number3D = Number3D.cross(_up, _front);
var axis : Number3D = new Number3D(X.x * -y + _up.x * x, X.y * -y + _up.y * x, X.z * -y + _up.z * x);
var angle : Number = axis.modulo;
axis.normalize();
PV3DUtils.rotate(_front, axis, angle);
PV3DUtils.rotate(_up, axis, angle);
this.x = _front.x * -_R + _O.x;
this.y = _front.y * -_R + _O.y;
this.z = _front.z * -_R + _O.z;
head();
}
}
}
import flash.display.*;
import flash.events.*;
class OperableSphereCamera extends SphereCamera
{
private var _dx : Number;
private var _dy : Number;
private var _stage : DisplayObject;
private var _prevX : Number = -1;
private var _prevY : Number = -1;
private var _down : Boolean = false;
// O : 中心座標
// R : 半径
// front : カメラ正面の向きを表す単位ベクトル
// up : カメラ上の向きを表す単位ベクトル
// stage : マウスイベントをlistenするDisplayObject
// dx : カメラ横への移動角度単位
// dy : カメラ上への移動角度単位
public function OperableSphereCamera(O : Number3D, R : Number, front : Number3D, up : Number3D, stage : DisplayObject, dx : Number, dy : Number) : void
{
super(O, R, front, up);
_dx = dx;
_dy = dy;
_stage = stage;
addCallback();
}
public function addCallback() : void
{
_stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
_stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
_stage.addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
public function removeCallback() : void
{
_stage.removeEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
_stage.removeEventListener(MouseEvent.MOUSE_UP, onMouseUp);
_stage.removeEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function onMouseDown(e : MouseEvent) : void { _down = true; }
private function onMouseUp(e : MouseEvent) : void { _down = false; }
private function onEnterFrame(e : Event) : void
{
if(_down){
if(_prevX != -1){
this.move((_stage.mouseX - _prevX) * _dx, (_stage.mouseY - _prevY) * _dy);
}
_prevX = _stage.mouseX;
_prevY = _stage.mouseY;
}else{
_prevX = -1;
_prevY = -1;
}
}
}
// 固定視点から継続的にターゲッティングするカメラ
class TrackingCamera extends QCamera3D
{
private var _targ : DisplayObject3D;
// targ : 目標
// up : カメラ上の方向の単位ベクトル
public function TrackingCamera(targ : DisplayObject3D, up : Number3D)
{
super(up);
_targ = targ;
}
// 現在の向きから、対象の方向にカメラを向ける
public function track() : void
{
var curDir : Number3D = Number3D.sub(_targ.position, this.position);
curDir.normalize();
rotate(curDir);
this.lookAt(_targ, _up);
}
}
// ゲットライド！
class RidingCamera extends QCamera3D
{
private var _ride : DisplayObject3D;
private var _prevPos : Number3D;
// ride : 対象
// up : カメラ上の方向の単位ベクトル
// front : カメラ正面の方向の単位ベクトル
public function RidingCamera(ride : DisplayObject3D, up : Number3D, front : Number3D = null)
{
super(up, front);
_ride = ride;
_prevPos = _ride.position.clone();
}
// 対象の後ろ側にback, 上側にup進んだところにカメラを置き、対象の進行方向を見る。
public function move(up : Number = 0, back : Number = 0) : void
{
var curDir : Number3D = new Number3D(_ride.x - _prevPos.x, _ride.y - _prevPos.y, _ride.z - _prevPos.z);
if(curDir.moduloSquared < 0.0001){
return;
}
curDir.normalize();
if(_front == null){
_front = curDir.clone();
}
rotate(curDir);
var curPos : Number3D = _ride.position.clone();
var temp : Number3D;
temp = _up.clone();
temp.multiplyEq(up);
curPos.plusEq(temp);
temp = _front.clone();
temp.multiplyEq(-back);
curPos.plusEq(temp);
this.position = curPos;
head();
_prevPos.copyFrom(_ride.position);
}
}