You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
153 lines
2.1 KiB
153 lines
2.1 KiB
2 years ago
|
import { TempNode } from '../core/TempNode.js';
|
||
|
|
import { NodeLib } from '../core/NodeLib.js';
|
||
|
|
|
||
|
|
class PositionNode extends TempNode {
|
||
|
|
|
||
|
|
constructor( scope ) {
|
||
|
|
|
||
|
|
super( 'v3' );
|
||
|
|
|
||
|
|
this.scope = scope || PositionNode.LOCAL;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getType( ) {
|
||
|
|
|
||
|
|
switch ( this.scope ) {
|
||
|
|
|
||
|
|
case PositionNode.PROJECTION:
|
||
|
|
|
||
|
|
return 'v4';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return this.type;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getShared( /* builder */ ) {
|
||
|
|
|
||
|
|
switch ( this.scope ) {
|
||
|
|
|
||
|
|
case PositionNode.LOCAL:
|
||
|
|
case PositionNode.WORLD:
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
generate( builder, output ) {
|
||
|
|
|
||
|
|
let result;
|
||
|
|
|
||
|
|
switch ( this.scope ) {
|
||
|
|
|
||
|
|
case PositionNode.LOCAL:
|
||
|
|
|
||
|
|
if ( builder.isShader( 'vertex' ) ) {
|
||
|
|
|
||
|
|
result = 'transformed';
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
builder.requires.position = true;
|
||
|
|
|
||
|
|
result = 'vPosition';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PositionNode.WORLD:
|
||
|
|
|
||
|
|
if ( builder.isShader( 'vertex' ) ) {
|
||
|
|
|
||
|
|
return '( modelMatrix * vec4( transformed, 1.0 ) ).xyz';
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
builder.requires.worldPosition = true;
|
||
|
|
|
||
|
|
result = 'vWPosition';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PositionNode.VIEW:
|
||
|
|
|
||
|
|
result = builder.isShader( 'vertex' ) ? '-mvPosition.xyz' : 'vViewPosition';
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PositionNode.PROJECTION:
|
||
|
|
|
||
|
|
result = builder.isShader( 'vertex' ) ? '( projectionMatrix * modelViewMatrix * vec4( position, 1.0 ) )' : 'vec4( 0.0 )';
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return builder.format( result, this.getType( builder ), output );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
copy( source ) {
|
||
|
|
|
||
|
|
super.copy( source );
|
||
|
|
|
||
|
|
this.scope = source.scope;
|
||
|
|
|
||
|
|
return this;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
toJSON( meta ) {
|
||
|
|
|
||
|
|
let data = this.getJSONNode( meta );
|
||
|
|
|
||
|
|
if ( ! data ) {
|
||
|
|
|
||
|
|
data = this.createJSONNode( meta );
|
||
|
|
|
||
|
|
data.scope = this.scope;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return data;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
PositionNode.LOCAL = 'local';
|
||
|
|
PositionNode.WORLD = 'world';
|
||
|
|
PositionNode.VIEW = 'view';
|
||
|
|
PositionNode.PROJECTION = 'projection';
|
||
|
|
|
||
|
|
PositionNode.prototype.nodeType = 'Position';
|
||
|
|
|
||
|
|
NodeLib.addKeyword( 'position', function () {
|
||
|
|
|
||
|
|
return new PositionNode();
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
NodeLib.addKeyword( 'worldPosition', function () {
|
||
|
|
|
||
|
|
return new PositionNode( PositionNode.WORLD );
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
NodeLib.addKeyword( 'viewPosition', function () {
|
||
|
|
|
||
|
|
return new PositionNode( PositionNode.VIEW );
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
export { PositionNode };
|