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/*
* Copyright 1998-2008 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;
import java.util.ArrayList;
/**
* The TransparencyAttributes object defines all attributes affecting
* transparency of the object.
*/
class TransparencyAttributesRetained extends NodeComponentRetained {
// A list of pre-defined bits to indicate which component
// in this TransparencyAttributes object changed.
static final int MODE_CHANGED = 0x01;
static final int VALUE_CHANGED = 0x02;
static final int SRC_BLEND_FUNCTION_CHANGED = 0x04;
static final int DST_BLEND_FUNCTION_CHANGED = 0x08;
// Integer flag that contains bitset to indicate
// which field changed.
int isDirty = 0xffff;
// Transparency mode (alpha, screen_door)
int transparencyMode = TransparencyAttributes.NONE;
float transparency = 0.0f;
// Transparency blend functions
int srcBlendFunction = TransparencyAttributes.BLEND_SRC_ALPHA;
int dstBlendFunction = TransparencyAttributes.BLEND_ONE_MINUS_SRC_ALPHA;
/**
* Sets the transparency mode for this
* appearance component object.
* @param transparencyMode the transparency mode to be used, one of
* NONE, FASTEST, NICEST,
* SCREEN_DOOR, or BLENDED
*/
final void initTransparencyMode(int transparencyMode) {
this.transparencyMode = transparencyMode;
}
/**
* Sets the transparency mode for this
* appearance component object and sends a message notifying
* the interested structures of the change.
* @param transparencyMode the transparency mode to be used, one of
* FASTEST, NICEST,
* SCREEN_DOOR, or BLENDED
*/
final void setTransparencyMode(int transparencyMode) {
initTransparencyMode(transparencyMode);
sendMessage(MODE_CHANGED, new Integer(transparencyMode));
}
/**
* Gets the transparency mode for this
* appearance component object.
* @return transparencyMode the transparency mode
*/
final int getTransparencyMode() {
return transparencyMode;
}
/**
* Sets this appearance's transparency.
* @param transparency the appearance's transparency
* in the range [0.0, 1.0] with 0.0 being
* fully opaque and 1.0 being fully transparent
*/
final void initTransparency(float transparency) {
this.transparency = transparency;
}
/**
* Sets this appearance's transparency and sends a message notifying
* the interested structures of the change.
* @param transparency the appearance's transparency
* in the range [0.0, 1.0] with 0.0 being
* fully opaque and 1.0 being fully transparent
*/
final void setTransparency(float transparency) {
initTransparency(transparency);
sendMessage(VALUE_CHANGED, new Float(transparency));
}
/**
* Retrieves this appearance's transparency.
* @return the appearance's transparency
*/
final float getTransparency() {
return this.transparency;
}
/**
* Sets the source blend function used in blended transparency
* and antialiasing operations. The source function specifies the
* factor that is multiplied by the source color; this value is
* added to the product of the destination factor and the
* destination color. The default source blend function is
* BLEND_SRC_ALPHA.
*
* @param blendFunction the blend function to be used for the source
* color, one of BLEND_ZERO, BLEND_ONE,
* BLEND_SRC_ALPHA, or BLEND_ONE_MINUS_SRC_ALPHA.
*/
final void initSrcBlendFunction(int blendFunction) {
this.srcBlendFunction = blendFunction;
}
/**
* Sets the source blend function used in blended transparency
* and antialiasing operations and sends a message notifying the
* interested structures of the change. The source function specifies the
* factor that is multiplied by the source color; this value is
* added to the product of the destination factor and the
* destination color. The default source blend function is
* BLEND_SRC_ALPHA.
*
* @param blendFunction the blend function to be used for the source
* color, one of BLEND_ZERO, BLEND_ONE,
* BLEND_SRC_ALPHA, or BLEND_ONE_MINUS_SRC_ALPHA.
*/
final void setSrcBlendFunction(int blendFunction) {
initSrcBlendFunction(blendFunction);
sendMessage(SRC_BLEND_FUNCTION_CHANGED, new Integer(blendFunction));
}
/**
* Retrieves this appearance's source blend function.
* @return the appearance's source blend function
*/
final int getSrcBlendFunction() {
return srcBlendFunction;
}
/**
* Sets the destination blend function used in blended transparency
* and antialiasing operations. The destination function specifies the
* factor that is multiplied by the destination color; this value is
* added to the product of the source factor and the
* source color. The default destination blend function is
* BLEND_ONE_MINUS_SRC_ALPHA.
*
* @param blendFunction the blend function to be used for the destination
* color, one of BLEND_ZERO, BLEND_ONE,
* BLEND_SRC_ALPHA, or BLEND_ONE_MINUS_SRC_ALPHA.
*
*/
final void initDstBlendFunction(int blendFunction) {
this.dstBlendFunction = blendFunction;
}
/**
* Sets the destination blend function used in blended transparency
* and antialiasing operations and sends a message notifying the
* interested structures of the change. The destination function
* specifies the factor that is multiplied by the destination
* color; this value is added to the product of the source factor
* and the source color. The default destination blend function is
* BLEND_ONE_MINUS_SRC_ALPHA.
*
* @param blendFunction the blend function to be used for the destination
* color, one of BLEND_ZERO, BLEND_ONE,
* BLEND_SRC_ALPHA, or BLEND_ONE_MINUS_SRC_ALPHA.
*/
final void setDstBlendFunction(int blendFunction) {
initDstBlendFunction(blendFunction);
sendMessage(DST_BLEND_FUNCTION_CHANGED, new Integer(blendFunction));
}
/**
* Retrieves this appearance's destination blend function.
* @return the appearance's destination blend function
*/
final int getDstBlendFunction() {
return dstBlendFunction;
}
/**
* Creates and initializes a mirror object, point the mirror object
* to the retained object if the object is not editable
*/
@Override
synchronized void createMirrorObject() {
if (mirror == null) {
// Check the capability bits and let the mirror object
// point to itself if is not editable
if (isStatic()) {
mirror = this;
} else {
TransparencyAttributesRetained mirrorTa
= new TransparencyAttributesRetained();
mirrorTa.source = source;
mirrorTa.set(this);
mirror = mirrorTa;
}
} else {
((TransparencyAttributesRetained) mirror).set(this);
}
}
static boolean useAlpha(TransparencyAttributesRetained ta) {
if (ta != null &&
ta.transparencyMode != TransparencyAttributes.NONE &&
ta.transparencyMode != TransparencyAttributes.SCREEN_DOOR) {
return true;
}
return false;
}
void updateNative(Context ctx,
float alpha, int geometryType, int polygonMode,
boolean lineAA,
boolean pointAA) {
Pipeline.getPipeline().updateTransparencyAttributes(ctx, alpha, geometryType, polygonMode,
lineAA, pointAA, transparencyMode,
srcBlendFunction, dstBlendFunction);
}
/**
* Initializes a mirror object, point the mirror object to the retained
* object if the object is not editable
*/
@Override
synchronized void initMirrorObject() {
((TransparencyAttributesRetained)mirror).set(this);
}
/**
* Update the "component" field of the mirror object with the
* given "value"
*/
@Override
synchronized void updateMirrorObject(int component, Object value) {
TransparencyAttributesRetained mirrorTa =
(TransparencyAttributesRetained) mirror;
if ((component & MODE_CHANGED) != 0) {
mirrorTa.transparencyMode = ((Integer)value).intValue();
}
else if ((component & VALUE_CHANGED) != 0) {
mirrorTa.transparency = ((Float)value).floatValue();
}
else if ((component & SRC_BLEND_FUNCTION_CHANGED) != 0) {
mirrorTa.srcBlendFunction = ((Integer) value).intValue();
}
else if ((component & DST_BLEND_FUNCTION_CHANGED) != 0) {
mirrorTa.dstBlendFunction = ((Integer) value).intValue();
}
}
boolean equivalent(TransparencyAttributesRetained tr) {
return ((tr != null) &&
(tr.transparencyMode == transparencyMode) &&
(tr.transparency == transparency) &&
(tr.srcBlendFunction == srcBlendFunction) &&
(tr.dstBlendFunction == dstBlendFunction));
}
protected void set(TransparencyAttributesRetained transp) {
super.set(transp);
transparencyMode = transp.transparencyMode;
transparency = transp.transparency;
srcBlendFunction = transp.srcBlendFunction;
dstBlendFunction = transp.dstBlendFunction;
}
final void sendMessage(int attrMask, Object attr) {
ArrayList univList = new ArrayList();
ArrayList> gaList = Shape3DRetained.getGeomAtomsList(mirror.users, univList);
// Send to rendering attribute structure, regardless of
// whether there are users or not (alternate appearance case ..)
J3dMessage createMessage = new J3dMessage();
createMessage.threads = J3dThread.UPDATE_RENDERING_ATTRIBUTES;
createMessage.type = J3dMessage.TRANSPARENCYATTRIBUTES_CHANGED;
createMessage.universe = null;
createMessage.args[0] = this;
createMessage.args[1]= new Integer(attrMask);
createMessage.args[2] = attr;
createMessage.args[3] = new Integer(changedFrequent);
VirtualUniverse.mc.processMessage(createMessage);
// System.err.println("univList.size is " + univList.size());
for(int i=0; i gL = gaList.get(i);
GeometryAtom[] gaArr = new GeometryAtom[gL.size()];
gL.toArray(gaArr);
createMessage.args[3] = gaArr;
VirtualUniverse.mc.processMessage(createMessage);
}
}
@Override
void handleFrequencyChange(int bit) {
if (bit == TransparencyAttributes.ALLOW_MODE_WRITE ||
bit == TransparencyAttributes.ALLOW_VALUE_WRITE||
bit == TransparencyAttributes.ALLOW_BLEND_FUNCTION_WRITE) {
setFrequencyChangeMask(bit, 0x1);
}
}
}