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loading and instantiating all geometries (with some errors)
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@skrat
skrat committed Jun 22, 2009
1 parent b38df69 commit f6b2bed
Showing 1 changed file with 80 additions and 23 deletions.
103 changes: 80 additions & 23 deletions src/org/sunflow/core/parser/DAEParser.java
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Expand Up @@ -24,12 +24,14 @@
import org.sunflow.image.Color;
import org.sunflow.util.FloatArray;
import org.sunflow.util.IntArray;
import org.sunflow.util.FastHashMap;

public class DAEParser implements SceneParser {

private SunflowAPIInterface api;
private Document dae;
private XPath xpath;
private FastHashMap<String, Integer> geometriesCache;

private String actualSceneId;

Expand Down Expand Up @@ -313,6 +315,8 @@ private void setCamera() {
Element cameraInstance = (Element) xpath.evaluate(getSceneQuery(actualSceneId)+"//instance_camera", dae, XPathConstants.NODE);
String cameraId = cameraInstance.getAttribute("url").substring(1);

UI.printInfo(Module.SCENE, "Got camera: %s ...", cameraId);

Float xfov, yfov, fov;
try {
xfov = Float.parseFloat(xpath.evaluate(getCameraQuery(cameraId)+"/optics/technique_common/perspective/xfov", dae));
Expand Down Expand Up @@ -357,51 +361,104 @@ private void setCamera() {
api.parameter("camera", cameraId);
api.options(SunflowAPI.DEFAULT_OPTIONS);

} catch(XPathExpressionException e) { }
} catch(XPathExpressionException e) {
UI.printError(Module.SCENE, "Error getting camera: is there any?");
}
}

private void loadGeometries() {
try {
NodeList geometries = (NodeList) xpath.evaluate(getSceneQuery(actualSceneId)+"/node/instance_geometry", dae, XPathConstants.NODESET);
for (int i=0; i < geometries.getLength(); i++) {
Element geometryInstance = (Element) geometries.item(i);
String geometryId = geometryInstance.getAttribute("url").substring(1);
loadGeometry(geometryId);
api.parameter("diffuse", null, parseColor("0.5 0.8 0.1").getRGB());
api.shader("std", "diffuse");

geometriesCache = new FastHashMap<String, Integer>();
NodeList nodes = (NodeList) xpath.evaluate(getSceneQuery(actualSceneId)+"/node", dae, XPathConstants.NODESET);
for (int i=0; i < nodes.getLength(); i++) {
Element node = (Element) nodes.item(i);
NodeList geometries = node.getElementsByTagName("instance_geometry");
for (int j=0; j < geometries.getLength(); j++) {
Element geometryInstance = (Element) geometries.item(j);
String geometryId = geometryInstance.getAttribute("url").substring(1);

if ( !geometriesCache.containsKey(geometryId) ) {
loadGeometry(geometryId);
geometriesCache.put(geometryId,0);
}
Integer ii = geometriesCache.get(geometryId);

transform(geometryInstance);
api.instance(geometryId + "." + ii.toString() + ".instance", geometryId);
geometriesCache.put(geometryId,ii+1);
}
}
} catch(XPathExpressionException e) { }
}

private void loadGeometry(String geometryId) {
try {
// load vertices
Integer offset = ((NodeList) xpath.evaluate(getGeometryQuery(geometryId)+"/mesh/triangles/input", dae, XPathConstants.NODESET)).getLength();

String verticesId = xpath.evaluate(getGeometryQuery(geometryId)+"/mesh/triangles/input[@semantic='VERTEX']/@source", dae).substring(1);
String sourceId = xpath.evaluate(getGeometryQuery(geometryId)+String.format("/mesh/vertices[@id='%s']/input[@semantic='POSITION']/@source", verticesId), dae).substring(1);
String verticesData = xpath.evaluate(getGeometryQuery(geometryId)+String.format("/mesh/source[@id='%s']/float_array/text()", sourceId), dae);
String trianglesData = xpath.evaluate(getGeometryQuery(geometryId)+"/mesh/triangles/p/text()", dae);
String normalsId = xpath.evaluate(getGeometryQuery(geometryId)+"/mesh/triangles/input[@semantic='NORMAL']/@source", dae);
String uvsId = xpath.evaluate(getGeometryQuery(geometryId)+"/mesh/triangles/input[@semantic='TEXCOORD']/@source", dae);

String verticesSourceId = xpath.evaluate(getGeometryQuery(geometryId)+String.format("/mesh/vertices[@id='%s']/input[@semantic='POSITION']/@source", verticesId), dae).substring(1);
String verticesData = xpath.evaluate(getGeometryQuery(geometryId)+String.format("/mesh/source[@id='%s']/float_array/text()", verticesSourceId), dae);

UI.printInfo(Module.API, "Reading mesh: %s ...", geometryId);
// load vertices
String[] verticesStrings = verticesData.trim().split("\\s+");
float[] points = new float[verticesStrings.length];
for (int i = 0; i < verticesStrings.length; i++) {
points[i] = Float.parseFloat(verticesStrings[i]);
}

// load normals
float[] normals = null;
if (normalsId != "") {
String normalsData = xpath.evaluate(getGeometryQuery(geometryId)+String.format("/mesh/source[@id='%s']/float_array/text()", normalsId.substring(1)), dae);
if (normalsData != "") {
String[] normalsStrings = normalsData.trim().split("\\s+");
normals = new float[normalsStrings.length];
for (int i=0; i<normals.length; i++) {
normals[i] = Float.parseFloat(normalsStrings[i]);
}
}
}

// load UVs
float[] texcoords = null;
if (uvsId != "") {
String uvsData = xpath.evaluate(getGeometryQuery(geometryId)+String.format("/mesh/source[@id='%s']/float_array/text()", uvsId.substring(1)), dae);
if (uvsData != "") {
String[] uvsStrings = uvsData.trim().split("\\s+");
texcoords = new float[uvsStrings.length];
for (int i=0; i<texcoords.length; i++) {
texcoords[i] = Float.parseFloat(uvsStrings[i]);
}
}
}

String trianglesData = xpath.evaluate(getGeometryQuery(geometryId)+"/mesh/triangles/p/text()", dae);
UI.printInfo(Module.GEOM, "Reading mesh: %s ...", geometryId);

String[] trianglesStrings = trianglesData.trim().split("\\s+");
int[] triangles = new int[trianglesStrings.length];
for (int i = 0; i < trianglesStrings.length; i++) {
triangles[i] = Integer.parseInt(trianglesStrings[i]);
int[] triangles = new int[trianglesStrings.length/offset];
for (int i = 0; i < triangles.length; i++) {
triangles[i] = Integer.parseInt(trianglesStrings[i*offset]);
}

api.parameter("diffuse", null, parseColor("1 1 1").getRGB());
api.shader("std", "diffuse");
api.parameter("triangles", triangles);
api.parameter("points", "point", "vertex", points);
api.geometry(geometryId, "triangle_mesh");
api.parameter("shaders", new String[]{"std"});

api.parameter("triangles", triangles);
api.parameter("points", "point", "vertex", points);
api.parameter("normals", "none");
api.geometry(geometryId, "triangle_mesh");
} catch(Exception e) {
e.printStackTrace();
UI.printError(Module.GEOM, "Error reading mesh: %s ...", geometryId);
}
}

api.parameter("shaders", new String[]{"std"});
api.instance(geometryId + ".instance", geometryId);
} catch(Exception e) { }
private void transform(Element geometryInstance) {
}

private String getSceneId() throws XPathExpressionException {
Expand Down

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