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added minMaxDistances to TrackballCamera and some refactorings

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This commit is contained in:
Eberhard Gräther
2011-05-29 15:27:37 +02:00
parent 6d08b4980b
commit f4a08e574c
1 changed files with 55 additions and 23 deletions
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src/extras/cameras/TrackballCamera.js
+55 -23
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@@ -1,5 +1,5 @@
/**
* @author Eberhard Gräther / http://egraether.com/
* @author Eberhard Graether / http://egraether.com/
* parameters = {
* fov: <float>,
@@ -11,6 +11,7 @@
* radius: <float>,
* screen: { width : <float>, height : <float>, offsetLeft : <float>, offsetTop : <float> },
* rotateSpeed: <float>,
* zoomSpeed: <float>,
* panSpeed: <float>,
@@ -20,6 +21,9 @@
* staticMoving: <bool>,
* dynamicDampingFactor: <float>,
* minDistance: <float>,
* maxDistance: <float>,
* keys: <Array>, // [ rotateKey, zoomKey, panKey ],
* domElement: <HTMLElement>,
@@ -39,6 +43,7 @@ THREE.TrackballCamera = function ( parameters ) {
this.screen = parameters.screen || { width : window.innerWidth, height : window.innerHeight, offsetLeft : 0, offsetTop : 0 };
this.radius = parameters.radius || ( this.screen.width + this.screen.height ) / 4;
this.rotateSpeed = parameters.rotateSpeed || 1.0;
this.zoomSpeed = parameters.zoomSpeed || 1.2;
this.panSpeed = parameters.panSpeed || 0.3;
@@ -48,7 +53,10 @@ THREE.TrackballCamera = function ( parameters ) {
this.staticMoving = parameters.staticMoving || false;
this.dynamicDampingFactor = parameters.dynamicDampingFactor || 0.2;
this.keys = parameters.keys || [ 65 /*A*/, 83 /*S*/, 68 /*D*/ ];
this.minDistance = parameters.minDistance || 0;
this.maxDistance = parameters.maxDistance || Infinity;
this.keys = parameters.keys || [ 16 /*SHIFT*/, 18 /*ALT*/, 17 /*CTRL*/ ];
this.useTarget = true;
@@ -126,14 +134,20 @@ THREE.TrackballCamera = function ( parameters ) {
var axis = (new THREE.Vector3()).cross( _rotateStart, _rotateEnd ).normalize(),
quaternion = new THREE.Quaternion();
angle *= this.rotateSpeed;
quaternion.setFromAxisAngle( axis, -angle );
quaternion.multiplyVector3( this.position );
quaternion.multiplyVector3( this.up );
if ( !this.staticMoving ) {
quaternion.multiplyVector3( _rotateEnd );
quaternion.multiplyVector3( _rotateEnd );
if ( this.staticMoving ) {
_rotateStart = _rotateEnd;
} else {
quaternion.setFromAxisAngle( axis, angle * ( this.dynamicDampingFactor - 1.0 ) );
quaternion.multiplyVector3( _rotateStart );
@@ -196,15 +210,33 @@ THREE.TrackballCamera = function ( parameters ) {
}
};
this.update = function( parentMatrixWorld, forceUpdate, camera ) {
if ( !this.staticMoving ) {
this.rotateCamera();
this.checkDistances = function() {
if ( !this.noZoom || !this.noPan ) {
if ( this.position.lengthSq() > this.maxDistance * this.maxDistance ) {
this.position.setLength( this.maxDistance );
}
var eye = this.position.clone().subSelf( this.target.position );
if ( eye.lengthSq() < this.minDistance * this.minDistance ) {
this.position.add( this.target.position, eye.setLength( this.minDistance ) );
}
}
};
this.update = function( parentMatrixWorld, forceUpdate, camera ) {
this.rotateCamera();
if ( !this.noZoom ) {
this.zoomCamera();
@@ -216,11 +248,14 @@ THREE.TrackballCamera = function ( parameters ) {
this.panCamera();
}
this.checkDistances();
this.supr.update.call( this, parentMatrixWorld, forceUpdate, camera );
};
// listeners
function keydown( event ) {
@@ -232,16 +267,19 @@ THREE.TrackballCamera = function ( parameters ) {
} else if ( event.keyCode === this.keys[ this.STATE.ROTATE ] ) {
_state = this.STATE.ROTATE;
_keyPressed = true;
} else if ( event.keyCode === this.keys[ this.STATE.ZOOM ] ) {
} else if ( event.keyCode === this.keys[ this.STATE.ZOOM ] && !this.noZoom ) {
_state = this.STATE.ZOOM;
_keyPressed = true;
} else if ( event.keyCode === this.keys[ this.STATE.PAN ] ) {
} else if ( event.keyCode === this.keys[ this.STATE.PAN ] && !this.noPan ) {
_state = this.STATE.PAN;
}
if ( _state !== this.STATE.NONE ) {
_keyPressed = true;
}
@@ -271,11 +309,11 @@ THREE.TrackballCamera = function ( parameters ) {
_rotateStart = _rotateEnd = this.getMouseProjectionOnBall( event.clientX, event.clientY );
} else if ( _state === this.STATE.ZOOM ) {
} else if ( _state === this.STATE.ZOOM && !this.noZoom ) {
_zoomStart = _zoomEnd = this.getMouseOnScreen( event.clientX, event.clientY );
} else {
} else if ( !this.noPan ) {
_panStart = _panEnd = this.getMouseOnScreen( event.clientX, event.clientY );
@@ -305,12 +343,6 @@ THREE.TrackballCamera = function ( parameters ) {
_rotateEnd = this.getMouseProjectionOnBall( event.clientX, event.clientY );
if ( this.staticMoving ) {
this.rotateCamera();
}
} else if ( _state === this.STATE.ZOOM && !this.noZoom ) {
_zoomEnd = this.getMouseOnScreen( event.clientX, event.clientY );