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/*
* Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package javax.media.j3d;
/**
* The RenderMethod interface is used to create various ways to render
* different geometries.
*/
class VertexArrayRenderMethod implements RenderMethod {
@Override
public boolean render(RenderMolecule rm, Canvas3D cv,
RenderAtomListInfo ra, int dirtyBits) {
GeometryArrayRetained geo = (GeometryArrayRetained)ra.geometry();
geo.setVertexFormat((rm.useAlpha && ((geo.vertexFormat &
GeometryArray.COLOR) != 0)),
rm.textureBin.attributeBin.ignoreVertexColors, cv.ctx);
if (rm.doInfinite) {
cv.updateState(dirtyBits);
while (ra != null) {
renderGeo(ra, rm, cv);
ra = ra.next;
}
return true;
}
boolean isVisible = false; // True if any of the RAs is visible.
while (ra != null) {
if (cv.ra == ra.renderAtom) {
if (cv.raIsVisible) {
cv.updateState(dirtyBits);
renderGeo(ra, rm, cv);
isVisible = true;
}
}
else {
if (!VirtualUniverse.mc.viewFrustumCulling ||
ra.renderAtom.localeVwcBounds.intersect(cv.viewFrustum)) {
cv.updateState(dirtyBits);
cv.raIsVisible = true;
renderGeo(ra, rm, cv);
isVisible = true;
}
else {
cv.raIsVisible = false;
}
cv.ra = ra.renderAtom;
}
ra = ra.next;
}
return isVisible;
}
void renderGeo(RenderAtomListInfo ra, RenderMolecule rm, Canvas3D cv) {
GeometryArrayRetained geo;
boolean useAlpha;
useAlpha = rm.useAlpha;
geo = (GeometryArrayRetained)ra.geometry();
geo.execute(cv, ra.renderAtom, rm.isNonUniformScale,
(useAlpha && ((geo.vertexFormat & GeometryArray.COLOR) != 0)) ,
rm.alpha,
cv.screen.screen,
rm.textureBin.attributeBin.ignoreVertexColors);
}
}
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