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549 lines (465 loc) · 13.1 KB
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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 org.scijava.java3d;
import java.util.ArrayList;
import org.scijava.vecmath.Color3f;
/**
* The LightBin manages a collection of EnvironmentSet objects.
* The number of objects managed depends upon the number of Lights
* in each EnvironmentSet and the number of lights supported by
* the underlying rendering layer.
*/
class EnvironmentSet extends Object implements ObjectUpdate{
// A list of pre-defined bits to indicate which component
// of the rendermolecule changed
static final int LIGHTENABLE_CHANGED = 0x01;
static final int AMBIENT_CHANGED = 0x02;
static final int FOG_CHANGED = 0x04;
static final int MODELCLIP_CHANGED = 0x08;
/**
* The ArrayList of Lights in this EnvironmentSet
*/
ArrayList<LightRetained> lights = new ArrayList<LightRetained>();
/**
* The position of the light in the lightbin that the
* lights in this environment set corresponds to
*/
int[] ltPos = null;
/**
* The arraylist of ambient lights in this env list
*/
ArrayList<LightRetained> ambLights = new ArrayList<LightRetained>();
/**
* The LightBin that this EnvironmentSet resides
*/
LightBin lightBin = null;
/**
* The bitmask of light slots that need to be enabled for this
*/
long enableMask = 0;
/**
* The cached scene ambient component for this EnvirionmentSet
*/
Color3f sceneAmbient = new Color3f();
/**
* The RenderBin for this EnvirionmentSet
*/
RenderBin renderBin = null;
/**
* The fog for this EnvironmentSet
*/
FogRetained fog = null;
/**
* The model clip for this EnvironmentSet
*/
ModelClipRetained modelClip = null;
/**
* enable mask for the model clip planes in this environment set
*/
int enableMCMask = 0; // enable mask used in modelClip.update()
int enableMCMaskCache = 0; // enable mask computed in renderBin that
// is copied into enableMCMask in updateObject
/**
* The references to the next and previous LightBins in the
* list.
*/
EnvironmentSet next = null;
EnvironmentSet prev = null;
/**
* List of attrributeBins to be added next Frame
*/
ArrayList<AttributeBin> addAttributeBins = new ArrayList<AttributeBin>();
/**
* Canvas Dirty Mask for
*/
int canvasDirty = 0;
/**
* cached value of enable mask
*/
long enableMaskCache = 0;
/**
*
*/
boolean onUpdateList = false;
/**
* The list of AttributeBins in this EnvironmentSet
*/
AttributeBin attributeBinList = null;
EnvironmentSet(RenderAtom ra, LightRetained[] lightList, FogRetained fog,
ModelClipRetained modelClip, RenderBin rb) {
renderBin = rb;
reset(ra, lightList, fog, modelClip);
}
private void reset(RenderAtom ra, LightRetained[] lightList, FogRetained fog,
ModelClipRetained modelClip) {
int i;
LightRetained light;
prev = null;
next = null;
onUpdateList = false;
attributeBinList = null;
lights.clear();
ambLights.clear();
sceneAmbient.x = 0.0f;
sceneAmbient.y = 0.0f;
sceneAmbient.z = 0.0f;
if (lightList != null) {
for (i=0; i<lightList.length; i++) {
light = lightList[i];
if (light.nodeType == NodeRetained.AMBIENTLIGHT) {
ambLights.add(light);
sceneAmbient.x += light.color.x;
sceneAmbient.y += light.color.y;
sceneAmbient.z += light.color.z;
}
else {
lights.add(light);
}
}
if (sceneAmbient.x > 1.0f) {
sceneAmbient.x = 1.0f;
}
if (sceneAmbient.y > 1.0f) {
sceneAmbient.y = 1.0f;
}
if (sceneAmbient.z > 1.0f) {
sceneAmbient.z = 1.0f;
}
}
this.fog = fog;
this.modelClip = modelClip;
enableMCMaskCache = 0;
if (modelClip != null) {
for (i = 0; i < 6; i++) {
if (modelClip.enables[i])
enableMCMaskCache |= 1 << i;
}
enableMCMask = enableMCMaskCache;
}
// Allocate the ltPos array
ltPos = new int[lights.size()];
enableMask = 0;
// Issue 466 : add the env set to the light, fog, and model clip
// lists only after the newly constructed env set is initialized
if (lightList != null) {
for (i=0; i<lightList.length; i++) {
lightList[i].environmentSets.add(this);
}
}
if (fog != null) {
fog.environmentSets.add(this);
}
if (modelClip != null) {
modelClip.environmentSets.add(this);
}
}
/**
* This tests if the qiven lights and fog match this EnviornmentSet
*/
boolean equals(RenderAtom ra, LightRetained[] lights, FogRetained fog,
ModelClipRetained modelClip) {
int i;
// First see if the lights match.
if (lights == null && ambLights == null) {
if (this.lights.size() == 0) {
if (this.fog == fog) {
return (true);
} else {
return (false);
}
} else {
return (false);
}
}
if ((this.lights.size() + this.ambLights.size())!= lights.length) {
return (false);
}
for (i=0; i<lights.length; i++) {
if (lights[i].nodeType == LightRetained.AMBIENTLIGHT) {
if (!this.ambLights.contains(lights[i])) {
return (false);
}
}
else {
if (!this.lights.contains(lights[i])) {
return (false);
}
}
}
// Now check fog
if (this.fog != fog) {
return (false);
}
// Now check model clip
if (this.modelClip != modelClip) {
return (false);
}
return (true);
}
/**
* This tests if the qiven lights match this EnviornmentSet
*/
boolean equalLights(LightRetained[] lights) {
int i;
// First see if the lights match.
if (lights == null && ambLights == null) {
if (this.lights.size() == 0) {
return (true);
}
}
if ((this.lights.size() + this.ambLights.size())!= lights.length) {
return (false);
}
for (i=0; i<lights.length; i++) {
if (lights[i].nodeType == LightRetained.AMBIENTLIGHT) {
if (!this.ambLights.contains(lights[i])) {
return (false);
}
}
else {
if (!this.lights.contains(lights[i])) {
return (false);
}
}
}
return (true);
}
@Override
public void updateObject() {
int i;
AttributeBin a;
if (addAttributeBins.size() > 0) {
a = addAttributeBins.get(0);
if (attributeBinList == null) {
attributeBinList = a;
}
else {
a.next = attributeBinList;
attributeBinList.prev = a;
attributeBinList = a;
}
for (i = 1; i < addAttributeBins.size() ; i++) {
a = addAttributeBins.get(i);
a.next = attributeBinList;
attributeBinList.prev = a;
attributeBinList = a;
}
}
addAttributeBins.clear();
if (canvasDirty != 0) {
Canvas3D canvases[] = renderBin.view.getCanvases();
for (i = 0; i < canvases.length; i++) {
canvases[i].canvasDirty |= canvasDirty;
}
if ((canvasDirty & Canvas3D.AMBIENTLIGHT_DIRTY) != 0) {
updateSceneAmbient();
}
if ((canvasDirty & Canvas3D.LIGHTENABLES_DIRTY) != 0) {
enableMask = enableMaskCache;
}
if ((canvasDirty & Canvas3D.MODELCLIP_DIRTY) != 0) {
enableMCMask = enableMCMaskCache;
}
canvasDirty = 0;
}
onUpdateList = false;
}
/**
* Adds the given AttributeBin to this EnvironmentSet.
*/
void addAttributeBin(AttributeBin a, RenderBin rb) {
a.environmentSet = this;
addAttributeBins.add(a);
if (!onUpdateList) {
rb.objUpdateList.add(this);
onUpdateList = true;
}
}
/**
* Removes the given AttributeBin from this EnvironmentSet.
*/
void removeAttributeBin(AttributeBin a) {
int i;
a.environmentSet = null;
// If the attributeBin being remove is contained in addAttributeBins, then
// remove the attributeBin from the addList
if (addAttributeBins.contains(a)) {
addAttributeBins.remove(addAttributeBins.indexOf(a));
}
else {
if (a.prev == null) { // At the head of the list
attributeBinList = a.next;
if (a.next != null) {
a.next.prev = null;
}
} else { // In the middle or at the end.
a.prev.next = a.next;
if (a.next != null) {
a.next.prev = a.prev;
}
}
}
a.prev = null;
a.next = null;
if (a.definingRenderingAttributes != null &&
(a.definingRenderingAttributes.changedFrequent != 0))
a.definingRenderingAttributes = null;
a.onUpdateList &= ~AttributeBin.ON_CHANGED_FREQUENT_UPDATE_LIST;
if (attributeBinList == null && addAttributeBins.size() == 0) {
// Now remove this environment set from all the lights and fogs
// that use this
int sz = lights.size();
for (i=0; i < sz; i++) {
lights.get(i).environmentSets.remove(this);
}
sz = ambLights.size();
for (i = 0; i < sz; i++) {
ambLights.get(i).environmentSets.remove(this);
}
if (fog != null) {
fog.environmentSets.remove(this);
}
lightBin.removeEnvironmentSet(this);
}
}
void updateSceneAmbient()
{
int i;
sceneAmbient.x = 0.0f;
sceneAmbient.y = 0.0f;
sceneAmbient.z = 0.0f;
for (i=0; i<ambLights.size(); i++) {
LightRetained aL = ambLights.get(i);
if (aL.lightOn) {
sceneAmbient.x += aL.color.x;
sceneAmbient.y += aL.color.y;
sceneAmbient.z += aL.color.z;
}
}
if (sceneAmbient.x > 1.0f) {
sceneAmbient.x = 1.0f;
}
if (sceneAmbient.y > 1.0f) {
sceneAmbient.y = 1.0f;
}
if (sceneAmbient.z > 1.0f) {
sceneAmbient.z = 1.0f;
}
}
/**
* Renders this EnvironmentSet
*/
void render(Canvas3D cv) {
AttributeBin a;
// include this EnvironmentSet to the to-be-updated list in Canvas
cv.setStateToUpdate(Canvas3D.ENVIRONMENTSET_BIT, this);
a = attributeBinList;
while (a != null) {
a.render(cv);
a = a.next;
}
}
void updateAttributes(Canvas3D cv) {
double scale;
boolean updateSceneAmbient = false, updateLightEnables = false;
boolean updateModelClip = false, updateFog = false;
// within frame
if (cv.environmentSet != this ) {
if (cv.enableMask != enableMask) {
updateLightEnables = true;
}
if (cv.sceneAmbient.x != sceneAmbient.x ||
cv.sceneAmbient.y != sceneAmbient.y ||
cv.sceneAmbient.z != sceneAmbient.z ) {
updateSceneAmbient = true;
}
if (cv.fog != fog) {
updateFog = true;
}
if (cv.modelClip != modelClip) {
updateModelClip = true;
}
}
// Check for dirtybit.
if ((cv.canvasDirty & (Canvas3D.LIGHTENABLES_DIRTY|
Canvas3D.AMBIENTLIGHT_DIRTY|
Canvas3D.FOG_DIRTY|
Canvas3D.MODELCLIP_DIRTY|
Canvas3D.VIEW_MATRIX_DIRTY)) != 0) {
if ((cv.canvasDirty & Canvas3D.LIGHTENABLES_DIRTY) != 0) {
updateLightEnables = true;
}
if ((cv.canvasDirty & Canvas3D.AMBIENTLIGHT_DIRTY) != 0) {
updateSceneAmbient = true;
}
if ((cv.canvasDirty & Canvas3D.FOG_DIRTY) != 0) {
updateFog = true;
}
if ((cv.canvasDirty & Canvas3D.MODELCLIP_DIRTY) != 0) {
updateModelClip = true;
}
if ((cv.canvasDirty & Canvas3D.VIEW_MATRIX_DIRTY) != 0) {
updateFog = true;
updateModelClip = true;
}
}
// do states update here.
if (updateLightEnables) {
cv.setLightEnables(cv.ctx, enableMask, renderBin.maxLights);
cv.enableMask = enableMask;
}
if (updateSceneAmbient) {
cv.setSceneAmbient(cv.ctx, sceneAmbient.x,
sceneAmbient.y, sceneAmbient.z);
cv.sceneAmbient.set(sceneAmbient);
}
if (updateFog) {
if (fog != null) {
scale = lightBin.geometryBackground == null?
cv.canvasViewCache.getVworldToCoexistenceScale():
cv.canvasViewCache.getInfVworldToCoexistenceScale();
fog.update(cv.ctx, scale);
} else {
cv.disableFog(cv.ctx);
}
cv.fog = fog;
}
if (updateModelClip) {
if (modelClip != null) {
modelClip.update(cv, enableMCMask);
} else {
cv.disableModelClip(cv.ctx);
}
cv.modelClip = modelClip;
}
cv.canvasDirty &= ~(Canvas3D.LIGHTENABLES_DIRTY|
Canvas3D.AMBIENTLIGHT_DIRTY |
Canvas3D.FOG_DIRTY |
Canvas3D.MODELCLIP_DIRTY |
Canvas3D.VIEW_MATRIX_DIRTY);
cv.environmentSet = this;
}
}