mirror
/
OpenDroneMap-WebODM
kopia lustrzana https://github.com/OpenDroneMap/WebODM
1
0
Forkuj 0
Kod Zgłoszenia Projekty Wydania Wiki Aktywność
OpenDroneMap-WebODM/app/static/app/js/vendor/osgjs/osg/PrimitiveFunctor.js

388 wiersze
12 KiB
JavaScript
Czysty Wina Historia

'use strict';
var vec3 = require( 'osg/glMatrix' ).vec3;
var PrimitiveSet = require( 'osg/primitiveSet' );
var DrawElements = require( 'osg/DrawElements' );
var DrawArrays = require( 'osg/DrawArrays' );
/**
* PrimitiveFunctor emulates the TemplatePrimitiveFunctor class in OSG and can
* be used to get access to the vertices that compose the things drawn by osgjs.
* Feed it with a callback that will be called for geometry.
* The callback must be a closure and have the next structure:
*
* var myCallback = function( ) {
* return {
* operatorPoint : function ( v ) { }, // Do your point operations here
* operatorLine : function ( v1, v2 ){ }, // Do you line operations here
* operatorTriangle : function ( v1, v2, v3 ) { } // Do your triangle operations here
* }
* };
*
* Important Note: You should take into account that you are accesing the actual vertices of the primitive
* you might want to do a copy of these values in your callback to avoid to modify the primitive geometry
* @class PrimitiveFunctor
*/
var PrimitiveFunctor = function ( geom, cb, vertices ) {
this._geom = geom;
this._cb = cb;
this._vertices = vertices;
};
var functorDrawElements = PrimitiveFunctor.functorDrawElements = [];
var functorDrawArrays = PrimitiveFunctor.functorDrawArrays = [];
functorDrawElements[ PrimitiveSet.POINTS ] = ( function () {
var v = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
var end = offset + count;
for ( var i = offset; i < end; ++i ) {
var j = indexes[ i ] * 3;
v[ 0 ] = vertices[ j ];
v[ 1 ] = vertices[ j + 1 ];
v[ 2 ] = vertices[ j + 2 ];
cb.operatorPoint( v );
}
};
} )();
functorDrawElements[ PrimitiveSet.LINES ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
var end = offset + count;
for ( var i = offset; i < end - 1; i += 2 ) {
var j = indexes[ i ] * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = indexes[ i + 1 ] * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
cb.operatorLine( v1, v2 );
}
};
} )();
functorDrawElements[ PrimitiveSet.LINE_STRIP ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
var end = offset + count;
for ( var i = offset; i < end - 1; ++i ) {
var j = indexes[ i ] * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = indexes[ i + 1 ] * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
cb.operatorLine( v1, v2 );
}
};
} )();
functorDrawElements[ PrimitiveSet.LINE_LOOP ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
var last = offset + count - 1;
for ( var i = offset; i < last; ++i ) {
var j = indexes[ i ] * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = indexes[ i + 1 ] * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
cb.operatorLine( v1, v2 );
}
last = indexes[ last ] * 3;
v1[ 0 ] = vertices[ last ];
v1[ 1 ] = vertices[ last + 1 ];
v1[ 2 ] = vertices[ last + 2 ];
var first = indexes[ 0 ] * 3;
v2[ 0 ] = vertices[ first ];
v2[ 1 ] = vertices[ first + 1 ];
v2[ 2 ] = vertices[ first + 2 ];
cb.operatorLine( v1, v2 );
};
} )();
functorDrawElements[ PrimitiveSet.TRIANGLES ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
var v3 = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
var end = offset + count;
for ( var i = offset; i < end; i += 3 ) {
var j = indexes[ i ] * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = indexes[ i + 1 ] * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
j = indexes[ i + 2 ] * 3;
v3[ 0 ] = vertices[ j ];
v3[ 1 ] = vertices[ j + 1 ];
v3[ 2 ] = vertices[ j + 2 ];
cb.operatorTriangle( v1, v2, v3 );
}
};
} )();
functorDrawElements[ PrimitiveSet.TRIANGLE_STRIP ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
var v3 = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
for ( var i = 2, pos = offset; i < count; ++i, ++pos ) {
var j = indexes[ pos ] * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = indexes[ pos + 1 ] * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
j = indexes[ pos + 2 ] * 3;
v3[ 0 ] = vertices[ j ];
v3[ 1 ] = vertices[ j + 1 ];
v3[ 2 ] = vertices[ j + 2 ];
if ( i % 2 ) {
cb.operatorTriangle( v1, v3, v2 );
} else {
cb.operatorTriangle( v1, v2, v3 );
}
}
};
} )();
functorDrawElements[ PrimitiveSet.TRIANGLE_FAN ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
var v3 = vec3.create();
return function ( offset, count, indexes, cb, vertices ) {
var first = indexes[ offset ];
for ( var i = 2, pos = offset + 1; i < count; ++i, ++pos ) {
v1[ 0 ] = vertices[ first ];
v1[ 1 ] = vertices[ first + 1 ];
v1[ 2 ] = vertices[ first + 2 ];
var j = indexes[ pos ] * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
j = indexes[ pos + 1 ] * 3;
v3[ 0 ] = vertices[ j ];
v3[ 1 ] = vertices[ j + 1 ];
v3[ 2 ] = vertices[ j + 2 ];
cb.operatorTriangle( v1, v2, v3 );
}
};
} )();
functorDrawArrays[ PrimitiveSet.POINTS ] = ( function () {
var v = vec3.create();
return function ( first, count, cb, vertices ) {
for ( var i = first; i < first + count; ++i ) {
var j = i * 3;
v[ 0 ] = vertices[ j ];
v[ 1 ] = vertices[ j + 1 ];
v[ 2 ] = vertices[ j + 2 ];
cb.operatorPoint( v );
}
};
} )();
functorDrawArrays[ PrimitiveSet.LINES ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
return function ( first, count, cb, vertices ) {
for ( var i = first; i < first + count - 1; i += 2 ) {
var j = i * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = ( i + 1 ) * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
cb.operatorLine( v1, v2 );
}
};
} )();
functorDrawArrays[ PrimitiveSet.LINE_STRIP ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
return function ( first, count, cb, vertices ) {
for ( var i = first; i < first + count - 1; ++i ) {
var j = i * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = ( i + 1 ) * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
cb.operatorLine( v1, v2 );
}
};
} )();
functorDrawArrays[ PrimitiveSet.LINE_LOOP ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
return function ( first, count, cb, vertices ) {
var last = first + count - 1;
for ( var i = first; i < last; ++i ) {
var j = i * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = ( i + 1 ) * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
cb.operatorLine( v1, v2 );
}
last = last * 3;
v1[ 0 ] = vertices[ last ];
v1[ 1 ] = vertices[ last + 1 ];
v1[ 2 ] = vertices[ last + 2 ];
first = first * 3;
v2[ 0 ] = vertices[ first ];
v2[ 1 ] = vertices[ first + 1 ];
v2[ 2 ] = vertices[ first + 2 ];
cb.operatorLine( v1, v2 );
};
} )();
functorDrawArrays[ PrimitiveSet.TRIANGLES ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
var v3 = vec3.create();
return function ( first, count, cb, vertices ) {
for ( var i = first; i < first + count; i += 3 ) {
var j = i * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = ( i + 1 ) * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
j = ( i + 2 ) * 3;
v3[ 0 ] = vertices[ j ];
v3[ 1 ] = vertices[ j + 1 ];
v3[ 2 ] = vertices[ j + 2 ];
cb.operatorTriangle( v1, v2, v3 );
}
};
} )();
functorDrawArrays[ PrimitiveSet.TRIANGLE_STRIP ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
var v3 = vec3.create();
return function ( first, count, cb, vertices ) {
for ( var i = 2, pos = first; i < count; ++i, ++pos ) {
var j = pos * 3;
v1[ 0 ] = vertices[ j ];
v1[ 1 ] = vertices[ j + 1 ];
v1[ 2 ] = vertices[ j + 2 ];
j = ( pos + 1 ) * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
j = ( pos + 2 ) * 3;
v3[ 0 ] = vertices[ j ];
v3[ 1 ] = vertices[ j + 1 ];
v3[ 2 ] = vertices[ j + 2 ];
if ( i % 2 ) {
cb.operatorTriangle( v1, v3, v2 );
} else {
cb.operatorTriangle( v1, v2, v3 );
}
}
};
} )();
functorDrawArrays[ PrimitiveSet.TRIANGLE_FAN ] = ( function () {
var v1 = vec3.create();
var v2 = vec3.create();
var v3 = vec3.create();
return function ( first, count, cb, vertices ) {
for ( var i = 2, pos = first + 1; i < count; ++i, ++pos ) {
v1[ 0 ] = vertices[ first ];
v1[ 1 ] = vertices[ first + 1 ];
v1[ 2 ] = vertices[ first + 2 ];
var j = pos * 3;
v2[ 0 ] = vertices[ j ];
v2[ 1 ] = vertices[ j + 1 ];
v2[ 2 ] = vertices[ j + 2 ];
j = ( pos + 1 ) * 3;
v3[ 0 ] = vertices[ j ];
v3[ 1 ] = vertices[ j + 1 ];
v3[ 2 ] = vertices[ j + 2 ];
cb.operatorTriangle( v1, v2, v3 );
}
};
} )();
PrimitiveFunctor.prototype = {
apply: function () {
var geom = this._geom;
var primitives = geom.primitives;
if ( !primitives )
return;
var cb = this._cb();
var cbFunctor;
var vertices = this._vertices;
var nbPrimitives = primitives.length;
for ( var i = 0; i < nbPrimitives; i++ ) {
var primitive = primitives[ i ];
if ( primitive instanceof DrawElements ) {
cbFunctor = functorDrawElements[ primitive.getMode() ];
if ( cbFunctor ) {
var indexes = primitive.indices.getElements();
cbFunctor( primitive.getFirst() / indexes.BYTES_PER_ELEMENT, primitive.getCount(), indexes, cb, vertices );
}
} else if ( primitive instanceof DrawArrays ) {
cbFunctor = functorDrawArrays[ primitive.getMode() ];
if ( cbFunctor ) {
cbFunctor( primitive.getFirst(), primitive.getCount(), cb, vertices );
}
}
}
}
};
module.exports = PrimitiveFunctor;
Reference in New Issue View Git Blame Kopiuj bezpośredni odnośnik