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Implemented colors and some minor modifications #17

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Implemented colors and some minor modifications #17

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6f0ea95
added extra object types
Jan 28, 2016
8f48a40
Added IFC object types as node names in the threejs scene
Jan 28, 2016
9ebe4e5
Implemented colors, and some formatting modifications
May 27, 2016
0c10de0
Added url encoded object names in the threejs object's name field
May 27, 2016
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275 changes: 232 additions & 43 deletions ServerPlugin/src/org/bimserver/serializers/json/ThreeJsSerializer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@

import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.*;
Expand All @@ -17,6 +19,11 @@
import org.bimserver.models.ifc2x3tc1.IfcSlab;
import org.bimserver.models.ifc2x3tc1.IfcWall;
import org.bimserver.models.ifc2x3tc1.IfcWindow;
import org.bimserver.models.ifc2x3tc1.IfcDistributionControlElement;
import org.bimserver.models.ifc2x3tc1.IfcFurnishingElement;
import org.bimserver.models.ifc2x3tc1.IfcBuildingElementProxy;
import org.bimserver.models.ifc2x3tc1.IfcFlowTerminal;
import org.bimserver.models.ifc2x3tc1.IfcSpace;
import org.bimserver.plugins.PluginManager;
import org.bimserver.plugins.renderengine.RenderEnginePlugin;
import org.bimserver.plugins.serializers.EmfSerializer;
Expand Down Expand Up @@ -44,19 +51,37 @@ public void reset() {
protected boolean write(OutputStream outputStream, ProgressReporter progressReporter) {
if (getMode() == Mode.BODY) {
out = new PrintWriter(outputStream);
Map<String, GeometryInfo> geometryData = new HashMap<String, GeometryInfo>();
Map<String, String> objectTypes = new HashMap<String, String>();
// A map that holds the material indexes for each object.
// Each object has a MultiMaterial assigned to it. And the different
// faces of that object have different materials. These indexes are
// the material indexes in that MultiMaterial, corresponding to that
// face. The key to get those material indexes is a long which is
// holding the color information for that face in form 0xRRGGBBAA.
//
// This map is filled when the materials are written, and later is
// used when writing the geometries.
//
// The first key is the oid of the geometryData.
Map<Long, Map<Long, Integer>> objectMaterialIndexes =
new HashMap<Long, Map<Long, Integer>>();
collectObjectData(geometryData, objectTypes);
out.println("{");
out.println(" \"metadata\" : { \"formatVersion\" : 4.3, \"type\" : \"object\", \"generator\" : \"BIMserver three.js serializer\" }, ");
out.println(" \"materials\" : [");
writeMaterials(geometryData, objectMaterialIndexes);
out.println(" ],");
out.println(" \"geometries\" : [");
Map<String, GeometryInfo> geometryData = collectGeometryData();
writeGeometries(geometryData);
writeGeometries(geometryData, objectMaterialIndexes);
out.println(" ],");
out.println(" \"object\" : {");
out.println(" \"uuid\" : \"root\",");
out.println(" \"type\" : \"Scene\",");
out.println(" \"matrix\" : [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],");
out.println(" \"children\" : [");
writeObjects(geometryData);
out.println(" ]");
out.println(" \"uuid\" : \"root\",");
out.println(" \"type\" : \"Scene\",");
out.println(" \"matrix\" : [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],");
out.println(" \"children\" : [");
writeObjects(geometryData, objectTypes);
out.println(" ]");
out.println(" }");
out.println("}");
out.flush();
Expand All @@ -67,12 +92,120 @@ protected boolean write(OutputStream outputStream, ProgressReporter progressRepo
return false;
}
}

private void writeMaterials(Map<String, GeometryInfo> geometryInfos,
Map<Long, Map<Long, Integer>> objectMaterialIndexes) {
boolean first = true;
Set<Long> writtenMultiMaterials = new HashSet<Long>();
for(GeometryInfo geometryInfo : geometryInfos.values()) {
Long id = geometryInfo.getData().getOid();
if(!writtenMultiMaterials.contains(id)) {
out.print(first ? "" : ",\n");
first = false;
out.println(" {");
objectMaterialIndexes.put(
id,
new HashMap<Long, Integer>()
);
writeMultiMaterial(
geometryInfo.getData(),
objectMaterialIndexes.get(id)
);
out.print(" }");
writtenMultiMaterials.add(id);
}
}
out.println();
}

private void writeMultiMaterial(GeometryData geometryData,
Map<Long, Integer> materialIndexes) {
// Create a MultiMaterial for this geometry that includes all of the
// materials, and add it to the global list of materials
out.println(" \"uuid\" : \"" + geometryData.getOid() + "M\",");
out.println(" \"type\" : \"MultiMaterial\", ");
out.println(" \"materials\": [");

// TODO
// For now just loop through the face indexes in order to find out what
// kind of materials we have, and add them to the indexes map.
List<Integer> indexes = getIntegerList(geometryData.getIndices());
if(null != indexes && 0 < indexes.size()) {
// Add the colors as keys
for(int i = 0; i < indexes.size(); i += 3) {
long color = this.getFaceColor(geometryData, i);
materialIndexes.put(color, 0);
}
// Now loop through the keys and create the materials, and write
// them.
// The counter indicates the index of the material inside the
// materials array of the MultiMaterial
int counter = 0;
for( Map.Entry<Long, Integer> material_entry :
materialIndexes.entrySet() ) {
material_entry.setValue(counter);
// Extract the color values
long color = material_entry.getKey();
int rgb_color = (int)(color >> 8);
int alpha_color = (int)(color & 0x000000ffL);
float opacity = (float)alpha_color / 255.0f;
// Now write them
out.print(" { ");
out.print("\"type\" : \"MeshPhongMaterial\", ");
if(opacity < 1.0) {
out.print("\"transparent\" : true, ");
out.print("\"opacity\" : \"" + opacity + "\", ");
}
out.print("\"color\" : " + rgb_color + "");
out.println(++counter >= materialIndexes.size() ? " }" : " },");
}
}

// End writing materials array
out.println(" ]");
}

// Returns the average color for that face in form of 0xRRGGBBAA.
private long getFaceColor(GeometryData geometryData, int firstVertexIndex) {
long colorCode = 0x00000000L;
byte[] b = geometryData.getMaterials();
// If there is a problem getting the materials for this geometry,
// just return white color as default.
if(null == b) {
return 0xFFFFFFFFL;
}
List<Float> colors = getFloatList(b);
b = geometryData.getIndices();
if(null == b) {
return 0xFFFFFFFFL;
}
List<Integer> indexes = getIntegerList(b);
if( null != colors && indexes != null &&
0 < colors.size() && 0 < indexes.size()) {
for(int c = 0; c < 4; c++) {
// Now using these indexes, get the average color of the
// face. The reason for getting the average is in case the
// vertices have different color values, although this is
// unlikely.
float color_value = (
colors.get( indexes.get(firstVertexIndex) * 4 + c ) +
colors.get( indexes.get(firstVertexIndex+1) * 4 + c ) +
colors.get( indexes.get(firstVertexIndex+2) * 4 + c )
) / 3.0f;
// Convert this color value to 0-255 integer, and add it to the
// long int.
colorCode += (int)(color_value*255.0f) * Math.pow(16,(3-c)*2);
}
}
return colorCode;
}

private void writeGeometry(GeometryData geometryData) {
out.println(" \"uuid\" : \"" + geometryData.getOid() + "\", ");
out.println(" \"type\" : \"Geometry\", ");
out.println(" \"data\" : {");
out.print(" \"vertices\": [ ");
private void writeGeometry(GeometryData geometryData,
Map<Long, Integer> materialIndexes) {
out.println(" \"uuid\" : \"" + geometryData.getOid() + "\", ");
out.println(" \"type\" : \"Geometry\", ");
out.println(" \"data\" : {");
out.print( " \"vertices\" : [ ");

List<Float> vertices = getFloatList(geometryData.getVertices());
if (vertices != null && vertices.size() > 0) {
Expand All @@ -83,8 +216,8 @@ private void writeGeometry(GeometryData geometryData) {
}
}

out.println("], ");
out.print(" \"normals\": [");
out.println(" ],");
out.print(" \"normals\" : [ ");

List<Float> normals = getFloatList(geometryData.getNormals());
if (normals != null && normals.size() > 0) {
Expand All @@ -95,31 +228,51 @@ private void writeGeometry(GeometryData geometryData) {
}
}

out.println("],");
out.println(" \"uvs\": [ ],");
out.print(" \"faces\": [ ");
out.println(" ],");
out.print( " \"faces\" : [ ");

List<Integer> indices = getIntegerList(geometryData.getIndices());

if (indices != null && indices.size() > 0) {
for (int i = 0; i < indices.size(); i += 3) {
out.print(i == 0 ? "" : ",");
out.print(" 32, ");
// 2 = faces have materials assigned to them. Refer to three.js
// JSON format documentation.
out.print(" 2, ");
// Write a face using the indexes of 3 vertices
out.print((indices.get(i)) + "," + (indices.get(i + 1)) + "," + (indices.get(i + 2)) + ",");
out.print((indices.get(i)) + "," + (indices.get(i + 1)) + "," + (indices.get(i + 2)));
// Now write the material index for this object.
long color_code = this.getFaceColor(geometryData, i);
try {
out.print( materialIndexes.get(color_code) );
} catch (IndexOutOfBoundsException e) {
LOGGER.error("Material information may be corrupted");
out.print( 0 );
}
}
}

out.println("]}");
out.println(" ]");
out.println(" }");
}

@SuppressWarnings("unchecked")
private Map<String, GeometryInfo> collectGeometryData() {
Map<String, GeometryInfo> geometryData = new HashMap<String, GeometryInfo>();
private boolean collectObjectData(
Map<String, GeometryInfo> geometryData,
Map<String, String> objectTypes_
) {
Class<IdEObject>[] eClasses = new Class[] {
IfcWall.class, IfcWindow.class, IfcDoor.class, IfcSlab.class, IfcColumn.class,
IfcDistributionControlElement.class, IfcFurnishingElement.class,
IfcBuildingElementProxy.class, IfcFlowTerminal.class, IfcSpace.class,
org.bimserver.models.ifc4.IfcWall.class,org.bimserver.models.ifc4.IfcWindow.class,
org.bimserver.models.ifc4.IfcDoor.class, org.bimserver.models.ifc4.IfcSlab.class,
org.bimserver.models.ifc4.IfcColumn.class
org.bimserver.models.ifc4.IfcColumn.class,
org.bimserver.models.ifc4.IfcDistributionControlElement.class,
org.bimserver.models.ifc4.IfcFurnishingElement.class,
org.bimserver.models.ifc4.IfcBuildingElementProxy.class,
org.bimserver.models.ifc4.IfcFlowTerminal.class,
org.bimserver.models.ifc4.IfcSpace.class
};
for (Class<? extends IdEObject> eClass : eClasses) {
for (IdEObject object : model.getAllWithSubTypes(eClass)) {
Expand All @@ -128,45 +281,81 @@ private Map<String, GeometryInfo> collectGeometryData() {
if (geometryInfo != null) {
geometryData.put(ifcRoot.getGlobalId(), geometryInfo);
}
//String objectType = eClass.getSimpleName() + ":" + ifcRoot.getName();
String objectName = "";
try {
objectName = URLEncoder.encode(
ifcRoot.getName(),
java.nio.charset.StandardCharsets.UTF_8.toString()
);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String objectType = eClass.getSimpleName();
// TODO
// rename the types with something that explains better, since
// now it holds Type:name
objectTypes_.put(
ifcRoot.getGlobalId(),
objectType + ":" + objectName);
}
}
return geometryData;
return true;
}


private void writeGeometries(Map<String, GeometryInfo> geometryInfos) {
private void writeGeometries(Map<String, GeometryInfo> geometryInfos,
Map<Long, Map<Long, Integer>> objectMaterialIndexes) {
boolean first = true;
Set<Long> writtenGeometries = new HashSet<Long>();
for(GeometryInfo geometryInfo: geometryInfos.values()){
if(!writtenGeometries.contains(geometryInfo.getData().getOid())){
out.println(first ? " {" : " ,{");
for(GeometryInfo geometryInfo : geometryInfos.values()) {
Long objectId = geometryInfo.getData().getOid();
if(!writtenGeometries.contains(objectId)) {
out.print(first ? "" : ",\n");
out.println(" {");
first = false;
writeGeometry(geometryInfo.getData());
out.print(" }");
writtenGeometries.add(geometryInfo.getData().getOid());
}
}
writeGeometry(
geometryInfo.getData(),
objectMaterialIndexes.get(objectId)
);
out.print(" }");
writtenGeometries.add(objectId);
}
}
out.println();
}

private void writeObjects(Map<String, GeometryInfo> geometryInfos) {
private void writeObjects(
Map<String, GeometryInfo> geometryInfos,
Map<String, String> objectTypes
) {
boolean first = true;
for (Map.Entry<String, GeometryInfo> geometryEntry: geometryInfos.entrySet()) {
String guid = geometryEntry.getKey();
GeometryInfo geometryInfo = geometryEntry.getValue();
out.println(first ? " {" : " , {");
writeObject(guid, geometryInfo);
out.print(" }");
String objectType = objectTypes.get(geometryEntry.getKey());
out.print(first ? "" : ",\n");
out.println(" {");
writeObject(guid, geometryInfo, objectType);
out.print(" }");
first = false;
}
out.println();
}

private void writeObject(String guid, GeometryInfo geometryInfo) {
out.println(" \"uuid\" : \"" + guid + "\", ");
out.println(" \"type\" : \"Mesh\", ");
out.println(" \"geometry\" : \"" + geometryInfo.getData().getOid() + "\", ");
out.print( " \"matrix\" : [");
private void writeObject(
String guid,
GeometryInfo geometryInfo,
String type
) {
long oid = geometryInfo.getData().getOid();
out.println(" \"uuid\" : \"" + guid + "\", ");
out.println(" \"name\" : \"" + type + "\", ");
out.println(" \"type\" : \"Mesh\", ");
out.println(" \"material\" : \"" + oid + "M\", ");
out.println(" \"geometry\" : \"" + oid + "\", ");
out.print( " \"matrix\" : [");
boolean first = true;
for(float i: getFloatList(geometryInfo.getTransformation())){
out.print(first ? "" : ",");
Expand Down