1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
package com.jme3.scene.plugins.blender.modifiers;
import com.jme3.bounding.BoundingBox;
import com.jme3.bounding.BoundingSphere;
import com.jme3.bounding.BoundingVolume;
import com.jme3.math.Vector3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.Mesh;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.scene.plugins.blender.BlenderContext;
import com.jme3.scene.plugins.blender.BlenderContext.LoadedFeatureDataType;
import com.jme3.scene.plugins.blender.exceptions.BlenderFileException;
import com.jme3.scene.plugins.blender.file.DynamicArray;
import com.jme3.scene.plugins.blender.file.FileBlockHeader;
import com.jme3.scene.plugins.blender.file.Pointer;
import com.jme3.scene.plugins.blender.file.Structure;
import com.jme3.scene.plugins.blender.objects.ObjectHelper;
import com.jme3.scene.shape.Curve;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This modifier allows to array modifier to the object.
*
* @author Marcin Roguski (Kaelthas)
*/
/*package*/ class ArrayModifier extends Modifier {
private static final Logger LOGGER = Logger.getLogger(ArrayModifier.class.getName());
/** Parameters of the modifier. */
private Map<String, Object> modifierData = new HashMap<String, Object>();
/**
* This constructor reads array data from the modifier structure. The
* stored data is a map of parameters for array modifier. No additional data
* is loaded.
*
* @param objectStructure
* the structure of the object
* @param modifierStructure
* the structure of the modifier
* @param blenderContext
* the blender context
* @throws BlenderFileException
* this exception is thrown when the blender file is somehow
* corrupted
*/
@SuppressWarnings("unchecked")
public ArrayModifier(Structure modifierStructure, BlenderContext blenderContext) throws BlenderFileException {
if(this.validate(modifierStructure, blenderContext)) {
Number fittype = (Number) modifierStructure.getFieldValue("fit_type");
modifierData.put("fittype", fittype);
switch (fittype.intValue()) {
case 0:// FIXED COUNT
modifierData.put("count", modifierStructure.getFieldValue("count"));
break;
case 1:// FIXED LENGTH
modifierData.put("length", modifierStructure.getFieldValue("length"));
break;
case 2:// FITCURVE
Pointer pCurveOb = (Pointer) modifierStructure.getFieldValue("curve_ob");
float length = 0;
if (pCurveOb.isNotNull()) {
Structure curveStructure = pCurveOb.fetchData(blenderContext.getInputStream()).get(0);
ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
Node curveObject = (Node) objectHelper.toObject(curveStructure, blenderContext);
Set<Number> referencesToCurveLengths = new HashSet<Number>(curveObject.getChildren().size());
for (Spatial spatial : curveObject.getChildren()) {
if (spatial instanceof Geometry) {
Mesh mesh = ((Geometry) spatial).getMesh();
if (mesh instanceof Curve) {
length += ((Curve) mesh).getLength();
} else {
//if bevel object has several parts then each mesh will have the same reference
//to length value (and we should use only one)
Number curveLength = spatial.getUserData("curveLength");
if (curveLength != null && !referencesToCurveLengths.contains(curveLength)) {
length += curveLength.floatValue();
referencesToCurveLengths.add(curveLength);
}
}
}
}
}
modifierData.put("length", Float.valueOf(length));
modifierData.put("fittype", Integer.valueOf(1));// treat it like FIXED LENGTH
break;
default:
assert false : "Unknown array modifier fit type: " + fittype;
}
// offset parameters
int offsettype = ((Number) modifierStructure.getFieldValue("offset_type")).intValue();
if ((offsettype & 0x01) != 0) {// Constant offset
DynamicArray<Number> offsetArray = (DynamicArray<Number>) modifierStructure.getFieldValue("offset");
float[] offset = new float[]{offsetArray.get(0).floatValue(), offsetArray.get(1).floatValue(), offsetArray.get(2).floatValue()};
modifierData.put("offset", offset);
}
if ((offsettype & 0x02) != 0) {// Relative offset
DynamicArray<Number> scaleArray = (DynamicArray<Number>) modifierStructure.getFieldValue("scale");
float[] scale = new float[]{scaleArray.get(0).floatValue(), scaleArray.get(1).floatValue(), scaleArray.get(2).floatValue()};
modifierData.put("scale", scale);
}
if ((offsettype & 0x04) != 0) {// Object offset
Pointer pOffsetObject = (Pointer) modifierStructure.getFieldValue("offset_ob");
if (pOffsetObject.isNotNull()) {
modifierData.put("offsetob", pOffsetObject);
}
}
// start cap and end cap
Pointer pStartCap = (Pointer) modifierStructure.getFieldValue("start_cap");
if (pStartCap.isNotNull()) {
modifierData.put("startcap", pStartCap);
}
Pointer pEndCap = (Pointer) modifierStructure.getFieldValue("end_cap");
if (pEndCap.isNotNull()) {
modifierData.put("endcap", pEndCap);
}
}
}
@Override
public Node apply(Node node, BlenderContext blenderContext) {
if(invalid) {
LOGGER.log(Level.WARNING, "Array modifier is invalid! Cannot be applied to: {0}", node.getName());
return node;
}
int fittype = ((Number) modifierData.get("fittype")).intValue();
float[] offset = (float[]) modifierData.get("offset");
if (offset == null) {// the node will be repeated several times in the same place
offset = new float[]{0.0f, 0.0f, 0.0f};
}
float[] scale = (float[]) modifierData.get("scale");
if (scale == null) {// the node will be repeated several times in the same place
scale = new float[]{0.0f, 0.0f, 0.0f};
} else {
// getting bounding box
node.updateModelBound();
BoundingVolume boundingVolume = node.getWorldBound();
if (boundingVolume instanceof BoundingBox) {
scale[0] *= ((BoundingBox) boundingVolume).getXExtent() * 2.0f;
scale[1] *= ((BoundingBox) boundingVolume).getYExtent() * 2.0f;
scale[2] *= ((BoundingBox) boundingVolume).getZExtent() * 2.0f;
} else if (boundingVolume instanceof BoundingSphere) {
float radius = ((BoundingSphere) boundingVolume).getRadius();
scale[0] *= radius * 2.0f;
scale[1] *= radius * 2.0f;
scale[2] *= radius * 2.0f;
} else {
throw new IllegalStateException("Unknown bounding volume type: " + boundingVolume.getClass().getName());
}
}
// adding object's offset
float[] objectOffset = new float[]{0.0f, 0.0f, 0.0f};
Pointer pOffsetObject = (Pointer) modifierData.get("offsetob");
if (pOffsetObject != null) {
FileBlockHeader offsetObjectBlock = blenderContext.getFileBlock(pOffsetObject.getOldMemoryAddress());
ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
try {// we take the structure in case the object was not yet loaded
Structure offsetStructure = offsetObjectBlock.getStructure(blenderContext);
Vector3f translation = objectHelper.getTransformation(offsetStructure, blenderContext).getTranslation();
objectOffset[0] = translation.x;
objectOffset[1] = translation.y;
objectOffset[2] = translation.z;
} catch (BlenderFileException e) {
LOGGER.log(Level.WARNING, "Problems in blender file structure! Object offset cannot be applied! The problem: {0}", e.getMessage());
}
}
// getting start and end caps
Node[] caps = new Node[]{null, null};
Pointer[] pCaps = new Pointer[]{(Pointer) modifierData.get("startcap"), (Pointer) modifierData.get("endcap")};
for (int i = 0; i < pCaps.length; ++i) {
if (pCaps[i] != null) {
caps[i] = (Node) blenderContext.getLoadedFeature(pCaps[i].getOldMemoryAddress(), LoadedFeatureDataType.LOADED_FEATURE);
if (caps[i] != null) {
caps[i] = (Node) caps[i].clone();
} else {
FileBlockHeader capBlock = blenderContext.getFileBlock(pOffsetObject.getOldMemoryAddress());
try {// we take the structure in case the object was not yet loaded
Structure capStructure = capBlock.getStructure(blenderContext);
ObjectHelper objectHelper = blenderContext.getHelper(ObjectHelper.class);
caps[i] = (Node) objectHelper.toObject(capStructure, blenderContext);
if (caps[i] == null) {
LOGGER.log(Level.WARNING, "Cap object ''{0}'' couldn''t be loaded!", capStructure.getName());
}
} catch (BlenderFileException e) {
LOGGER.log(Level.WARNING, "Problems in blender file structure! Cap object cannot be applied! The problem: {0}", e.getMessage());
}
}
}
}
Vector3f translationVector = new Vector3f(offset[0] + scale[0] + objectOffset[0], offset[1] + scale[1] + objectOffset[1], offset[2] + scale[2] + objectOffset[2]);
// getting/calculating repeats amount
int count = 0;
if (fittype == 0) {// Fixed count
count = ((Number) modifierData.get("count")).intValue() - 1;
} else if (fittype == 1) {// Fixed length
float length = ((Number) modifierData.get("length")).floatValue();
if (translationVector.length() > 0.0f) {
count = (int) (length / translationVector.length()) - 1;
}
} else if (fittype == 2) {// Fit curve
throw new IllegalStateException("Fit curve should be transformed to Fixed Length array type!");
} else {
throw new IllegalStateException("Unknown fit type: " + fittype);
}
// adding translated nodes and caps
if (count > 0) {
Node[] arrayNodes = new Node[count];
Vector3f newTranslation = new Vector3f();
for (int i = 0; i < count; ++i) {
newTranslation.addLocal(translationVector);
Node nodeClone = (Node) node.clone();
nodeClone.setLocalTranslation(newTranslation);
arrayNodes[i] = nodeClone;
}
for (Node nodeClone : arrayNodes) {
node.attachChild(nodeClone);
}
if (caps[0] != null) {
caps[0].getLocalTranslation().set(node.getLocalTranslation()).subtractLocal(translationVector);
node.attachChild(caps[0]);
}
if (caps[1] != null) {
caps[1].getLocalTranslation().set(newTranslation).addLocal(translationVector);
node.attachChild(caps[1]);
}
}
return node;
}
@Override
public String getType() {
return ARRAY_MODIFIER_DATA;
}
}
|
