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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 CompressedGeometryRenderMethod implements RenderMethod {
/**
* The actual rendering code for this RenderMethod.
*/
@Override
public boolean render(RenderMolecule rm, Canvas3D cv,
RenderAtomListInfo ra, int dirtyBits) {
if (rm.doInfinite) {
cv.updateState(dirtyBits);
while (ra != null) {
renderCompressedGeo(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);
renderCompressedGeo(ra, rm, cv);
isVisible = true;
}
}
else {
if (!VirtualUniverse.mc.viewFrustumCulling ||
ra.renderAtom.localeVwcBounds.intersect(cv.viewFrustum)) {
cv.updateState(dirtyBits);
cv.raIsVisible = true;
renderCompressedGeo(ra, rm, cv);
isVisible = true;
}
else {
cv.raIsVisible = false;
}
cv.ra = ra.renderAtom;
}
ra = ra.next;
}
return isVisible;
}
void renderCompressedGeo(RenderAtomListInfo ra, RenderMolecule rm, Canvas3D cv) {
boolean useAlpha ;
CompressedGeometryRetained cgr ;
useAlpha = rm.useAlpha ;
cgr = (CompressedGeometryRetained)ra.renderAtom.geometryAtom.geometryArray[ra.index];
/* force_decompression if lighting is disabled and
* ignoreVertexColors is TRUE, since there is no way for openGL
* to ignore vertexColors in this case, force decompression
*/
if (rm.textureBin.attributeBin.ignoreVertexColors && rm.enableLighting == false && cgr.mirrorGeometry == null) {
cgr.mirrorGeometry = cgr.getGeometry(true, cv) ;
}
else if (cgr.mirrorGeometry == null) {
// cgr.getGeometry() will decompress in software and return a
// GeometryRetained if hardware decompression isn't available,
// otherwise it just returns cgr.
cgr.mirrorGeometry = cgr.getGeometry(false, cv) ;
if (cgr.mirrorGeometry == null)
// decompressor error
return ;
}
cgr.mirrorGeometry.execute(cv, ra.renderAtom, rm.isNonUniformScale,
(useAlpha && ra.geometry().noAlpha), rm.alpha,
cv.screen.screen,
rm.textureBin.attributeBin.ignoreVertexColors);
}
}
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