@Override
public void startWalk(final Ray3 walkRay) {
// store ray
_walkRay.set(walkRay);
// simplify access to direction
final ReadOnlyVector3 direction = _walkRay.getDirection();
// Move start point to grid space
final Vector3 start = _walkRay.getOrigin().subtract(_gridOrigin, null);
_gridLocation[0] = (int) MathUtils.floor(start.getX() / _gridSpacing.getX());
_gridLocation[1] = (int) MathUtils.floor(start.getY() / _gridSpacing.getY());
final double invDirX = 1.0 / direction.getX();
final double invDirY = 1.0 / direction.getY();
// Check which direction on the X world axis we are moving.
if (direction.getX() > BresenhamZUpGridTracer.TOLERANCE) {
_distToNextXIntersection =
((_gridLocation[0] + 1) * _gridSpacing.getX() - start.getX()) * invDirX;
_distBetweenXIntersections = _gridSpacing.getX() * invDirX;
_stepXDirection = 1;
} else if (direction.getX() < -BresenhamZUpGridTracer.TOLERANCE) {
_distToNextXIntersection =
(start.getX() - _gridLocation[0] * _gridSpacing.getX()) * -direction.getX();
_distBetweenXIntersections = -_gridSpacing.getX() * invDirX;
_stepXDirection = -1;
} else {
_distToNextXIntersection = Double.MAX_VALUE;
_distBetweenXIntersections = Double.MAX_VALUE;
_stepXDirection = 0;
}
// Check which direction on the Y world axis we are moving.
if (direction.getY() > BresenhamZUpGridTracer.TOLERANCE) {
_distToNextYIntersection =
((_gridLocation[1] + 1) * _gridSpacing.getY() - start.getY()) * invDirY;
_distBetweenYIntersections = _gridSpacing.getY() * invDirY;
_stepYDirection = 1;
} else if (direction.getY() < -BresenhamZUpGridTracer.TOLERANCE) {
_distToNextYIntersection =
(start.getY() - _gridLocation[1] * _gridSpacing.getY()) * -direction.getY();
_distBetweenYIntersections = -_gridSpacing.getY() * invDirY;
_stepYDirection = -1;
} else {
_distToNextYIntersection = Double.MAX_VALUE;
_distBetweenYIntersections = Double.MAX_VALUE;
_stepYDirection = 0;
}
// Reset some variables
_rayLocation.set(start);
_totalTravel = 0.0;
_stepDirection = Direction.None;
}
@Override
public void applyFilter(final InteractManager manager) {
final SpatialState state = manager.getSpatialState();
final ReadOnlyVector3 scale = state.getTransform().getScale();
final double x = MathUtils.clamp(scale.getX(), _minScale.getX(), _maxScale.getX());
final double y = MathUtils.clamp(scale.getY(), _minScale.getY(), _maxScale.getY());
final double z = MathUtils.clamp(scale.getZ(), _minScale.getZ(), _maxScale.getZ());
state.getTransform().setScale(x, y, z);
}
public void set(final double radius, final double start, final double end) {
final FloatBuffer buf = getMeshData().getVertexBuffer();
buf.limit(buf.capacity());
this.getMeshData().updateVertexCount();
buf.rewind();
double arc = end - start;
final int n = buf.limit() / 3;
for (int i = 0; i < n; i++) {
double theta = start + arc / (n - 1) * i;
float x = (float) (MathUtils.cos(theta) * radius);
float y = (float) (MathUtils.sin(theta) * radius);
buf.put(x).put(y).put(0);
}
getMeshData().updateVertexCount();
}
public double eval(final double x, final double y, final double z) {
double value = 0, signal = 0, weight = 1;
double dx = x * _frequency, dy = y * _frequency, dz = z * _frequency;
for (int i = 0; i < _octaves; i++) {
signal = _source.eval(dx, dy, dz);
signal = Math.abs(signal);
signal = _offset - signal;
// Square the signal to increase the sharpness of the ridges.
signal *= signal;
// The weighting from the previous octave is applied to the signal.
// Larger values have higher weights, producing sharp points along the
// ridges.
signal *= weight;
// Weight successive contributions by the previous signal. (clamp to [0, 1])
weight = MathUtils.clamp(signal * _gain, 0, 1);
// Add the signal to the output value.
value += signal * _spectralWeights[i];
// Next!
dx *= _lacunarity;
dy *= _lacunarity;
dz *= _lacunarity;
}
return (value * 1.25) - 1.0;
}
@Override
protected void updateExample(final ReadOnlyTimer timer) {
if (allowClicks && zoom) {
if (index > COUNT - 1) {
index = COUNT - 1;
} else if (index < 0) {
index = 0;
}
final int currentTile = MathUtils.floor(index);
final float fract = index - currentTile;
if (firstTile != currentTile - 1) {
// update the textures on the tiles
firstTile = MathUtils.floor(index - 1);
for (int i = 0; i < views.length; i++) {
if (firstTile + i >= 0 && firstTile + i < COUNT) {
views[i].removeAllComponents();
views[i].add(srcs[firstTile + i]);
views[i].updateMinimumSizeFromContents();
views[i].layout();
views[i].setVisible(true);
} else {
views[i].setVisible(false);
}
}
}
// update the positions of the tiles.
final int y = (_canvas.getCanvasRenderer().getCamera().getHeight() / 2) - (hside / 2);
for (int i = 0; i < views.length; i++) {
final float x = (i - fract) * (wside + padding);
views[i].setHudXY(Math.round(x), y);
}
// check for and apply movement
index += timer.getTimePerFrame() * speed;
}
// update hud input
hud.updateGeometricState(timer.getTimePerFrame());
}
public LwjglPbufferTextureRenderer(
final DisplaySettings settings,
final Renderer parentRenderer,
final ContextCapabilities caps) {
super(settings, parentRenderer, caps);
int pTarget = RenderTexture.RENDER_TEXTURE_2D;
if (!MathUtils.isPowerOfTwo(_width) || !MathUtils.isPowerOfTwo(_height)) {
pTarget = RenderTexture.RENDER_TEXTURE_RECTANGLE;
}
// signature: boolean useRGB, boolean useRGBA, boolean useDepth, boolean isRectangle, int
// target, int mipmaps
_texture =
new RenderTexture(
false, true, true, pTarget == RenderTexture.RENDER_TEXTURE_RECTANGLE, pTarget, 0);
setMultipleTargets(false);
}
/**
* Update the vertices for this particle, taking size, spin and viewer into consideration. In the
* case of particle type ParticleType.GeomMesh, the original triangle normal is maintained rather
* than rotating it to face the camera or parent vectors.
*
* @param cam Camera to use in determining viewer aspect. If null, or if parent is not set to
* camera facing, parent's left and up vectors are used.
*/
public void updateVerts(final Camera cam) {
final double orient = parent.getParticleOrientation() + values[VAL_CURRENT_SPIN];
final double currSize = values[VAL_CURRENT_SIZE];
if (type == ParticleSystem.ParticleType.GeomMesh
|| type == ParticleSystem.ParticleType.Point) {; // nothing to do
} else if (cam != null && parent.isCameraFacing()) {
final ReadOnlyVector3 camUp = cam.getUp();
final ReadOnlyVector3 camLeft = cam.getLeft();
final ReadOnlyVector3 camDir = cam.getDirection();
if (parent.isVelocityAligned()) {
bbX.set(_velocity).normalizeLocal().multiplyLocal(currSize);
camDir.cross(bbX, bbY).normalizeLocal().multiplyLocal(currSize);
} else if (orient == 0) {
bbX.set(camLeft).multiplyLocal(currSize);
bbY.set(camUp).multiplyLocal(currSize);
} else {
final double cA = MathUtils.cos(orient) * currSize;
final double sA = MathUtils.sin(orient) * currSize;
bbX.set(camLeft)
.multiplyLocal(cA)
.addLocal(camUp.getX() * sA, camUp.getY() * sA, camUp.getZ() * sA);
bbY.set(camLeft)
.multiplyLocal(-sA)
.addLocal(camUp.getX() * cA, camUp.getY() * cA, camUp.getZ() * cA);
}
} else {
bbX.set(parent.getLeftVector()).multiplyLocal(0);
bbY.set(parent.getUpVector()).multiplyLocal(0);
}
final Vector3 tempVec3 = Vector3.fetchTempInstance();
final FloatBuffer vertexBuffer = parent.getParticleGeometry().getMeshData().getVertexBuffer();
switch (type) {
case Quad:
{
_position.subtract(bbX, tempVec3).subtractLocal(bbY);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 0);
_position.subtract(bbX, tempVec3).addLocal(bbY);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 1);
_position.add(bbX, tempVec3).addLocal(bbY);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 2);
_position.add(bbX, tempVec3).subtractLocal(bbY);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 3);
break;
}
case GeomMesh:
{
final Quaternion tempQuat = Quaternion.fetchTempInstance();
final ReadOnlyVector3 norm = triModel.getNormal();
if (orient != 0) {
tempQuat.fromAngleNormalAxis(orient, norm);
}
for (int x = 0; x < 3; x++) {
if (orient != 0) {
tempQuat.apply(triModel.get(x), tempVec3);
} else {
tempVec3.set(triModel.get(x));
}
tempVec3.multiplyLocal(currSize).addLocal(_position);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + x);
}
Quaternion.releaseTempInstance(tempQuat);
break;
}
case Triangle:
{
_position
.subtract(3 * bbX.getX(), 3 * bbX.getY(), 3 * bbX.getZ(), tempVec3)
.subtractLocal(bbY);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 0);
_position.add(bbX, tempVec3).addLocal(3 * bbY.getX(), 3 * bbY.getY(), 3 * bbY.getZ());
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 1);
_position.add(bbX, tempVec3).subtractLocal(bbY);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 2);
break;
}
case Line:
{
_position.subtract(bbX, tempVec3);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex);
_position.add(bbX, tempVec3);
BufferUtils.setInBuffer(tempVec3, vertexBuffer, startIndex + 1);
break;
}
case Point:
{
BufferUtils.setInBuffer(_position, vertexBuffer, startIndex);
break;
}
}
Vector3.releaseTempInstance(tempVec3);
}
private void setGeometryData() {
final FloatBuffer verts = _meshData.getVertexBuffer();
final FloatBuffer norms = _meshData.getNormalBuffer();
final FloatBuffer texs = _meshData.getTextureBuffer(0);
verts.rewind();
norms.rewind();
texs.rewind();
// generate geometry
final double inverseRadial = 1.0 / radialSamples;
final double inverseSphere = 1.0 / sphereSamples;
final double halfHeight = 0.5 * height;
// Generate points on the unit circle to be used in computing the mesh
// points on a cylinder slice.
final double[] sin = new double[radialSamples + 1];
final double[] cos = new double[radialSamples + 1];
for (int radialCount = 0; radialCount < radialSamples; radialCount++) {
final double angle = MathUtils.TWO_PI * inverseRadial * radialCount;
cos[radialCount] = MathUtils.cos(angle);
sin[radialCount] = MathUtils.sin(angle);
}
sin[radialSamples] = sin[0];
cos[radialSamples] = cos[0];
final Vector3 tempA = new Vector3();
// top point.
verts.put(0).put((float) (radius + halfHeight)).put(0);
norms.put(0).put(1).put(0);
texs.put(1).put(1);
// generating the top dome.
for (int i = 0; i < sphereSamples; i++) {
final double center = radius * (1 - (i + 1) * (inverseSphere));
final double lengthFraction = (center + height + radius) / (height + 2 * radius);
// compute radius of slice
final double fSliceRadius = Math.sqrt(Math.abs(radius * radius - center * center));
for (int j = 0; j <= radialSamples; j++) {
final Vector3 kRadial = tempA.set(cos[j], 0, sin[j]);
kRadial.multiplyLocal(fSliceRadius);
verts.put(kRadial.getXf()).put((float) (center + halfHeight)).put(kRadial.getZf());
kRadial.setY(center);
kRadial.normalizeLocal();
norms.put(kRadial.getXf()).put(kRadial.getYf()).put(kRadial.getZf());
final double radialFraction = 1 - (j * inverseRadial); // in [0,1)
texs.put((float) radialFraction).put((float) lengthFraction);
}
}
// generate cylinder... but no need to add points for first and last
// samples as they are already part of domes.
for (int i = 1; i < axisSamples; i++) {
final double center = halfHeight - (i * height / axisSamples);
final double lengthFraction = (center + halfHeight + radius) / (height + 2 * radius);
for (int j = 0; j <= radialSamples; j++) {
final Vector3 kRadial = tempA.set(cos[j], 0, sin[j]);
kRadial.multiplyLocal(radius);
verts.put(kRadial.getXf()).put((float) center).put(kRadial.getZf());
kRadial.normalizeLocal();
norms.put(kRadial.getXf()).put(kRadial.getYf()).put(kRadial.getZf());
final double radialFraction = 1 - (j * inverseRadial); // in [0,1)
texs.put((float) radialFraction).put((float) lengthFraction);
}
}
// generating the bottom dome.
for (int i = 0; i < sphereSamples; i++) {
final double center = i * (radius / sphereSamples);
final double lengthFraction = (radius - center) / (height + 2 * radius);
// compute radius of slice
final double fSliceRadius = Math.sqrt(Math.abs(radius * radius - center * center));
for (int j = 0; j <= radialSamples; j++) {
final Vector3 kRadial = tempA.set(cos[j], 0, sin[j]);
kRadial.multiplyLocal(fSliceRadius);
verts.put(kRadial.getXf()).put((float) (-center - halfHeight)).put(kRadial.getZf());
kRadial.setY(-center);
kRadial.normalizeLocal();
norms.put(kRadial.getXf()).put(kRadial.getYf()).put(kRadial.getZf());
final double radialFraction = 1 - (j * inverseRadial); // in [0,1)
texs.put((float) radialFraction).put((float) lengthFraction);
}
}
// bottom point.
verts.put(0).put((float) (-radius - halfHeight)).put(0);
norms.put(0).put(-1).put(0);
texs.put(0).put(0);
}
/**
* Find and apply the given material to the given Mesh.
*
* @param materialName our material name
* @param mesh the mesh to apply material to.
*/
public void applyMaterial(final String materialName, final Mesh mesh) {
if (materialName == null) {
logger.warning("materialName is null");
return;
}
Element mat = _dataCache.getBoundMaterial(materialName);
if (mat == null) {
logger.warning("material not bound: " + materialName + ", trying search with id.");
mat = _colladaDOMUtil.findTargetWithId(materialName);
}
if (mat == null || !"material".equals(mat.getName())) {
logger.warning("material not found: " + materialName);
return;
}
final String originalMaterial = mat.getAttributeValue("id");
MaterialInfo mInfo = null;
if (!_dataCache.getMaterialInfoMap().containsKey(originalMaterial)) {
mInfo = new MaterialInfo();
mInfo.setMaterialName(originalMaterial);
_dataCache.getMaterialInfoMap().put(originalMaterial, mInfo);
}
_dataCache.getMeshMaterialMap().put(mesh, originalMaterial);
final Element child = mat.getChild("instance_effect");
final Element effectNode = _colladaDOMUtil.findTargetWithId(child.getAttributeValue("url"));
if (effectNode == null) {
logger.warning(
"material effect not found: "
+ mat.getChild("instance_material").getAttributeValue("url"));
return;
}
if ("effect".equals(effectNode.getName())) {
/*
* temp cache for textures, we do not want to add textures twice (for example, transparant map might point
* to diffuse texture)
*/
final HashMap<String, Texture> loadedTextures = new HashMap<String, Texture>();
final Element effect = effectNode;
// XXX: For now, just grab the common technique:
if (effect.getChild("profile_COMMON") != null) {
if (mInfo != null) {
mInfo.setProfile("COMMON");
}
final Element technique = effect.getChild("profile_COMMON").getChild("technique");
String type = "blinn";
if (technique.getChild(type) == null) {
type = "phong";
if (technique.getChild(type) == null) {
type = "lambert";
if (technique.getChild(type) == null) {
type = "constant";
if (technique.getChild(type) == null) {
ColladaMaterialUtils.logger.warning(
"COMMON material has unusuable techinque. " + child.getAttributeValue("url"));
return;
}
}
}
}
final Element blinnPhongLambert = technique.getChild(type);
if (mInfo != null) {
mInfo.setTechnique(type);
}
final MaterialState mState = new MaterialState();
// TODO: implement proper transparency handling
Texture diffuseTexture = null;
ColorRGBA transparent = new ColorRGBA(1.0f, 1.0f, 1.0f, 1.0f);
float transparency = 1.0f;
boolean useTransparency = false;
String opaqueMode = "A_ONE";
/*
* place holder for current property, we import material properties in fixed order (for texture order)
*/
Element property = null;
/* Diffuse property */
property = blinnPhongLambert.getChild("diffuse");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("color".equals(propertyValue.getName())) {
final ColorRGBA color = _colladaDOMUtil.getColor(propertyValue.getText());
mState.setDiffuse(MaterialFace.FrontAndBack, color);
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
diffuseTexture =
populateTextureState(mesh, propertyValue, effect, loadedTextures, mInfo, "diffuse");
}
}
/* Ambient property */
property = blinnPhongLambert.getChild("ambient");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("color".equals(propertyValue.getName())) {
final ColorRGBA color = _colladaDOMUtil.getColor(propertyValue.getText());
mState.setAmbient(MaterialFace.FrontAndBack, color);
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
populateTextureState(mesh, propertyValue, effect, loadedTextures, mInfo, "ambient");
}
}
/* Transparent property */
property = blinnPhongLambert.getChild("transparent");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("color".equals(propertyValue.getName())) {
transparent = _colladaDOMUtil.getColor(propertyValue.getText());
// TODO: use this
useTransparency = true;
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
populateTextureState(mesh, propertyValue, effect, loadedTextures, mInfo, "transparent");
}
opaqueMode = property.getAttributeValue("opaque", "A_ONE");
}
/* Transparency property */
property = blinnPhongLambert.getChild("transparency");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("float".equals(propertyValue.getName())) {
transparency = Float.parseFloat(propertyValue.getText().replace(",", "."));
// TODO: use this
if (_flipTransparency) {
transparency = 1f - transparency;
}
useTransparency = true;
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
populateTextureState(
mesh, propertyValue, effect, loadedTextures, mInfo, "transparency");
}
}
/* Emission property */
property = blinnPhongLambert.getChild("emission");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("color".equals(propertyValue.getName())) {
mState.setEmissive(
MaterialFace.FrontAndBack, _colladaDOMUtil.getColor(propertyValue.getText()));
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
populateTextureState(mesh, propertyValue, effect, loadedTextures, mInfo, "emissive");
}
}
/* Specular property */
property = blinnPhongLambert.getChild("specular");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("color".equals(propertyValue.getName())) {
mState.setSpecular(
MaterialFace.FrontAndBack, _colladaDOMUtil.getColor(propertyValue.getText()));
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
populateTextureState(mesh, propertyValue, effect, loadedTextures, mInfo, "specular");
}
}
/* Shininess property */
property = blinnPhongLambert.getChild("shininess");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("float".equals(propertyValue.getName())) {
float shininess = Float.parseFloat(propertyValue.getText().replace(",", "."));
if (shininess >= 0.0f && shininess <= 1.0f) {
final float oldShininess = shininess;
shininess *= 128;
logger.finest(
"Shininess - "
+ oldShininess
+ " - was in the [0,1] range. Scaling to [0, 128] - "
+ shininess);
} else if (shininess < 0 || shininess > 128) {
final float oldShininess = shininess;
shininess = MathUtils.clamp(shininess, 0, 128);
logger.warning(
"Shininess must be between 0 and 128. Shininess "
+ oldShininess
+ " was clamped to "
+ shininess);
}
mState.setShininess(MaterialFace.FrontAndBack, shininess);
} else if ("texture".equals(propertyValue.getName()) && _loadTextures) {
populateTextureState(mesh, propertyValue, effect, loadedTextures, mInfo, "shininess");
}
}
/* Reflectivity property */
float reflectivity = 1.0f;
property = blinnPhongLambert.getChild("reflectivity");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("float".equals(propertyValue.getName())) {
reflectivity = Float.parseFloat(propertyValue.getText().replace(",", "."));
}
}
/* Reflective property. Texture only */
property = blinnPhongLambert.getChild("reflective");
if (property != null) {
final Element propertyValue = (Element) property.getChildren().get(0);
if ("texture".equals(propertyValue.getName()) && _loadTextures) {
final Texture reflectiveTexture =
populateTextureState(
mesh, propertyValue, effect, loadedTextures, mInfo, "reflective");
reflectiveTexture.setEnvironmentalMapMode(Texture.EnvironmentalMapMode.SphereMap);
reflectiveTexture.setApply(ApplyMode.Combine);
reflectiveTexture.setCombineFuncRGB(CombinerFunctionRGB.Interpolate);
// color 1
reflectiveTexture.setCombineSrc0RGB(CombinerSource.CurrentTexture);
reflectiveTexture.setCombineOp0RGB(CombinerOperandRGB.SourceColor);
// color 2
reflectiveTexture.setCombineSrc1RGB(CombinerSource.Previous);
reflectiveTexture.setCombineOp1RGB(CombinerOperandRGB.SourceColor);
// interpolate param will come from alpha of constant color
reflectiveTexture.setCombineSrc2RGB(CombinerSource.Constant);
reflectiveTexture.setCombineOp2RGB(CombinerOperandRGB.SourceAlpha);
reflectiveTexture.setConstantColor(new ColorRGBA(1, 1, 1, reflectivity));
}
}
/*
* An extra tag defines some materials not part of the collada standard. Since we're not able to parse
* we simply extract the textures from the element (such that shaders etc can at least pick up on them)
*/
property = technique.getChild("extra");
if (property != null) {
getTexturesFromElement(mesh, property, effect, loadedTextures, mInfo);
}
// XXX: There are some issues with clarity on how to use alpha blending in OpenGL FFP.
// The best interpretation I have seen is that if transparent has a texture == diffuse,
// Turn on alpha blending and use diffuse alpha.
// check to make sure we actually need this.
// testing separately for a transparency of 0.0 is to hack around erroneous exports, since
// usually
// there is no use in exporting something with 100% transparency.
if ("A_ONE".equals(opaqueMode) && ColorRGBA.WHITE.equals(transparent) && transparency == 1.0
|| transparency == 0.0) {
useTransparency = false;
}
if (useTransparency) {
if (diffuseTexture != null) {
final BlendState blend = new BlendState();
blend.setBlendEnabled(true);
blend.setTestEnabled(true);
blend.setSourceFunction(BlendState.SourceFunction.SourceAlpha);
blend.setDestinationFunction(BlendState.DestinationFunction.OneMinusSourceAlpha);
mesh.setRenderState(blend);
} else {
final BlendState blend = new BlendState();
blend.setBlendEnabled(true);
blend.setTestEnabled(true);
transparent.setAlpha(transparent.getAlpha() * transparency);
blend.setConstantColor(transparent);
blend.setSourceFunction(BlendState.SourceFunction.ConstantAlpha);
blend.setDestinationFunction(BlendState.DestinationFunction.OneMinusConstantAlpha);
mesh.setRenderState(blend);
}
mesh.getSceneHints().setRenderBucketType(RenderBucketType.Transparent);
}
if (mInfo != null) {
if (useTransparency) {
mInfo.setUseTransparency(useTransparency);
if (diffuseTexture == null) {
mInfo.setTransparency(transparent.getAlpha() * transparency);
}
}
mInfo.setMaterialState(mState);
}
mesh.setRenderState(mState);
}
} else {
ColladaMaterialUtils.logger.warning(
"material effect not found: "
+ mat.getChild("instance_material").getAttributeValue("url"));
}
}
private void setGeometryData() {
// generate geometry
final double inverseRadial = 1.0 / _radialSamples;
final double inverseAxisLess = 1.0 / (_closed ? _axisSamples - 3 : _axisSamples - 1);
final double inverseAxisLessTexture = 1.0 / (_axisSamples - 1);
final double halfHeight = 0.5 * _height;
// Generate points on the unit circle to be used in computing the mesh
// points on a cylinder slice.
final double[] sin = new double[_radialSamples + 1];
final double[] cos = new double[_radialSamples + 1];
for (int radialCount = 0; radialCount < _radialSamples; radialCount++) {
final double angle = MathUtils.TWO_PI * inverseRadial * radialCount;
cos[radialCount] = MathUtils.cos(angle);
sin[radialCount] = MathUtils.sin(angle);
}
sin[_radialSamples] = sin[0];
cos[_radialSamples] = cos[0];
// generate the cylinder itself
final Vector3 tempNormal = new Vector3();
for (int axisCount = 0, i = 0; axisCount < _axisSamples; axisCount++) {
double axisFraction;
double axisFractionTexture;
int topBottom = 0;
if (!_closed) {
axisFraction = axisCount * inverseAxisLess; // in [0,1]
axisFractionTexture = axisFraction;
} else {
if (axisCount == 0) {
topBottom = -1; // bottom
axisFraction = 0;
axisFractionTexture = inverseAxisLessTexture;
} else if (axisCount == _axisSamples - 1) {
topBottom = 1; // top
axisFraction = 1;
axisFractionTexture = 1 - inverseAxisLessTexture;
} else {
axisFraction = (axisCount - 1) * inverseAxisLess;
axisFractionTexture = axisCount * inverseAxisLessTexture;
}
}
final double z = -halfHeight + _height * axisFraction;
// compute center of slice
final Vector3 sliceCenter = new Vector3(0, 0, z);
// compute slice vertices with duplication at end point
final int save = i;
for (int radialCount = 0; radialCount < _radialSamples; radialCount++) {
final double radialFraction = radialCount * inverseRadial; // in [0,1)
tempNormal.set(cos[radialCount], sin[radialCount], 0);
if (topBottom == 0) {
if (!_inverted) {
_meshData
.getNormalBuffer()
.put(tempNormal.getXf())
.put(tempNormal.getYf())
.put(tempNormal.getZf());
} else {
_meshData
.getNormalBuffer()
.put(-tempNormal.getXf())
.put(-tempNormal.getYf())
.put(-tempNormal.getZf());
}
} else {
_meshData.getNormalBuffer().put(0).put(0).put(topBottom * (_inverted ? -1 : 1));
}
tempNormal
.multiplyLocal((_radius - _radius2) * axisFraction + _radius2)
.addLocal(sliceCenter);
_meshData
.getVertexBuffer()
.put(tempNormal.getXf())
.put(tempNormal.getYf())
.put(tempNormal.getZf());
_meshData
.getTextureCoords(0)
.getBuffer()
.put((float) (_inverted ? 1 - radialFraction : radialFraction))
.put((float) axisFractionTexture);
i++;
}
BufferUtils.copyInternalVector3(_meshData.getVertexBuffer(), save, i);
BufferUtils.copyInternalVector3(_meshData.getNormalBuffer(), save, i);
_meshData
.getTextureCoords(0)
.getBuffer()
.put((_inverted ? 0.0f : 1.0f))
.put((float) axisFractionTexture);
i++;
}
if (_closed) {
_meshData.getVertexBuffer().put(0).put(0).put((float) -halfHeight); // bottom center
_meshData.getNormalBuffer().put(0).put(0).put(-1 * (_inverted ? -1 : 1));
_meshData.getTextureCoords(0).getBuffer().put(0.5f).put(0);
_meshData.getVertexBuffer().put(0).put(0).put((float) halfHeight); // top center
_meshData.getNormalBuffer().put(0).put(0).put(1 * (_inverted ? -1 : 1));
_meshData.getTextureCoords(0).getBuffer().put(0.5f).put(1);
}
}
/**
private double calcNewJitter() {
return ((MathUtils.nextRandomFloat() * 2.0f) - 1.0f) * _wanderJitter;
}
// 4D simplex noise
double noise(final double x, final double y, final double z, final double w) {
// The skewing and unskewing factors are hairy again for the 4D case
final double F4 = (Math.sqrt(5.0) - 1.0) / 4.0;
final double G4 = (5.0 - Math.sqrt(5.0)) / 20.0;
double n0, n1, n2, n3, n4; // Noise contributions from the five corners
// Skew the (x,y,z,w) space to determine which cell of 24 simplices we're in
final double s = (x + y + z + w) * F4; // Factor for 4D skewing
final int i = (int) MathUtils.floor(x + s);
final int j = (int) MathUtils.floor(y + s);
final int k = (int) MathUtils.floor(z + s);
final int l = (int) MathUtils.floor(w + s);
final double t = (i + j + k + l) * G4; // Factor for 4D unskewing
final double X0 = i - t; // Unskew the cell origin back to (x,y,z,w) space
final double Y0 = j - t;
final double Z0 = k - t;
final double W0 = l - t;
final double x0 = x - X0; // The x,y,z,w distances from the cell origin
final double y0 = y - Y0;
final double z0 = z - Z0;
final double w0 = w - W0;
// For the 4D case, the simplex is a 4D shape I won't even try to describe.
// To find out which of the 24 possible simplices we're in, we need to
// determine the magnitude ordering of x0, y0, z0 and w0.
// The method below is a good way of finding the ordering of x,y,z,w and
// then find the correct traversal order for the simplex we’re in.
// First, six pair-wise comparisons are performed between each possible pair
// of the four coordinates, and the results are used to add up binary bits
// for an integer index.
final int c1 = (x0 > y0) ? 32 : 0;
final int c2 = (x0 > z0) ? 16 : 0;
final int c3 = (y0 > z0) ? 8 : 0;
final int c4 = (x0 > w0) ? 4 : 0;
final int c5 = (y0 > w0) ? 2 : 0;
final int c6 = (z0 > w0) ? 1 : 0;
final int c = c1 + c2 + c3 + c4 + c5 + c6;
int i1, j1, k1, l1; // The integer offsets for the second simplex corner
int i2, j2, k2, l2; // The integer offsets for the third simplex corner
int i3, j3, k3, l3; // The integer offsets for the fourth simplex corner
// simplex[c] is a 4-vector with the numbers 0, 1, 2 and 3 in some order.
// Many values of c will never occur, since e.g. x>y>z>w makes x<z, y<w and x<w
// impossible. Only the 24 indices which have non-zero entries make any sense.
// We use a thresholding to set the coordinates in turn from the largest magnitude.
// The number 3 in the "simplex" array is at the position of the largest coordinate.
i1 = simplex[c][0] >= 3 ? 1 : 0;
j1 = simplex[c][1] >= 3 ? 1 : 0;
k1 = simplex[c][2] >= 3 ? 1 : 0;
l1 = simplex[c][3] >= 3 ? 1 : 0;
// The number 2 in the "simplex" array is at the second largest coordinate.
i2 = simplex[c][0] >= 2 ? 1 : 0;
j2 = simplex[c][1] >= 2 ? 1 : 0;
k2 = simplex[c][2] >= 2 ? 1 : 0;
l2 = simplex[c][3] >= 2 ? 1 : 0;
// The number 1 in the "simplex" array is at the second smallest coordinate.
i3 = simplex[c][0] >= 1 ? 1 : 0;
j3 = simplex[c][1] >= 1 ? 1 : 0;
k3 = simplex[c][2] >= 1 ? 1 : 0;
l3 = simplex[c][3] >= 1 ? 1 : 0;
// The fifth corner has all coordinate offsets = 1, so no need to look that up.
final double x1 = x0 - i1 + G4; // Offsets for second corner in (x,y,z,w) coords
final double y1 = y0 - j1 + G4;
final double z1 = z0 - k1 + G4;
final double w1 = w0 - l1 + G4;
final double x2 = x0 - i2 + 2.0 * G4; // Offsets for third corner in (x,y,z,w) coords
final double y2 = y0 - j2 + 2.0 * G4;
final double z2 = z0 - k2 + 2.0 * G4;
final double w2 = w0 - l2 + 2.0 * G4;
final double x3 = x0 - i3 + 3.0 * G4; // Offsets for fourth corner in (x,y,z,w) coords
final double y3 = y0 - j3 + 3.0 * G4;
final double z3 = z0 - k3 + 3.0 * G4;
final double w3 = w0 - l3 + 3.0 * G4;
final double x4 = x0 - 1.0 + 4.0 * G4; // Offsets for last corner in (x,y,z,w) coords
final double y4 = y0 - 1.0 + 4.0 * G4;
final double z4 = z0 - 1.0 + 4.0 * G4;
final double w4 = w0 - 1.0 + 4.0 * G4;
// Work out the hashed gradient indices of the five simplex corners
final int ii = i & 255;
final int jj = j & 255;
final int kk = k & 255;
final int ll = l & 255;
final int gi0 = perm[ii + perm[jj + perm[kk + perm[ll]]]] % 32;
final int gi1 = perm[ii + i1 + perm[jj + j1 + perm[kk + k1 + perm[ll + l1]]]] % 32;
final int gi2 = perm[ii + i2 + perm[jj + j2 + perm[kk + k2 + perm[ll + l2]]]] % 32;
final int gi3 = perm[ii + i3 + perm[jj + j3 + perm[kk + k3 + perm[ll + l3]]]] % 32;
final int gi4 = perm[ii + 1 + perm[jj + 1 + perm[kk + 1 + perm[ll + 1]]]] % 32;
// Calculate the contribution from the five corners
double t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0 - w0 * w0;
if (t0 < 0) {
n0 = 0.0;
} else {
t0 *= t0;
n0 = t0 * t0 * dot(grad4[gi0], x0, y0, z0, w0);
}
double t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1 - w1 * w1;
if (t1 < 0) {
n1 = 0.0;
} else {
t1 *= t1;
n1 = t1 * t1 * dot(grad4[gi1], x1, y1, z1, w1);
}
double t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2 - w2 * w2;
if (t2 < 0) {
n2 = 0.0;
} else {
t2 *= t2;
n2 = t2 * t2 * dot(grad4[gi2], x2, y2, z2, w2);
}
double t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3 - w3 * w3;
if (t3 < 0) {
n3 = 0.0;
} else {
t3 *= t3;
n3 = t3 * t3 * dot(grad4[gi3], x3, y3, z3, w3);
}
double t4 = 0.6 - x4 * x4 - y4 * y4 - z4 * z4 - w4 * w4;
if (t4 < 0) {
n4 = 0.0;
} else {
t4 *= t4;
n4 = t4 * t4 * dot(grad4[gi4], x4, y4, z4, w4);
}
// Sum up and scale the result to cover the range [-1,1]
return 27.0 * (n0 + n1 + n2 + n3 + n4);
}
// 3D simplex noise
public static double noise(final double xin, final double yin, final double zin) {
double n0, n1, n2, n3; // Noise contributions from the four corners
// Skew the input space to determine which simplex cell we're in
final double F3 = 1.0 / 3.0;
final double s = (xin + yin + zin) * F3; // Very nice and simple skew factor for 3D
final int i = (int) MathUtils.floor(xin + s);
final int j = (int) MathUtils.floor(yin + s);
final int k = (int) MathUtils.floor(zin + s);
final double G3 = 1.0 / 6.0; // Very nice and simple unskew factor, too
final double t = (i + j + k) * G3;
final double X0 = i - t; // Unskew the cell origin back to (x,y,z) space
final double Y0 = j - t;
final double Z0 = k - t;
final double x0 = xin - X0; // The x,y,z distances from the cell origin
final double y0 = yin - Y0;
final double z0 = zin - Z0;
// For the 3D case, the simplex shape is a slightly irregular tetrahedron.
// Determine which simplex we are in.
int i1, j1, k1; // Offsets for second corner of simplex in (i,j,k) coords
int i2, j2, k2; // Offsets for third corner of simplex in (i,j,k) coords
if (x0 >= y0) {
if (y0 >= z0) {
i1 = 1;
j1 = 0;
k1 = 0;
i2 = 1;
j2 = 1;
k2 = 0;
} // X Y Z order
else if (x0 >= z0) {
i1 = 1;
j1 = 0;
k1 = 0;
i2 = 1;
j2 = 0;
k2 = 1;
} // X Z Y order
else {
i1 = 0;
j1 = 0;
k1 = 1;
i2 = 1;
j2 = 0;
k2 = 1;
} // Z X Y order
} else { // x0<y0
if (y0 < z0) {
i1 = 0;
j1 = 0;
k1 = 1;
i2 = 0;
j2 = 1;
k2 = 1;
} // Z Y X order
else if (x0 < z0) {
i1 = 0;
j1 = 1;
k1 = 0;
i2 = 0;
j2 = 1;
k2 = 1;
} // Y Z X order
else {
i1 = 0;
j1 = 1;
k1 = 0;
i2 = 1;
j2 = 1;
k2 = 0;
} // Y X Z order
}
// A step of (1,0,0) in (i,j,k) means a step of (1-c,-c,-c) in (x,y,z),
// a step of (0,1,0) in (i,j,k) means a step of (-c,1-c,-c) in (x,y,z), and
// a step of (0,0,1) in (i,j,k) means a step of (-c,-c,1-c) in (x,y,z), where
// c = 1/6.
final double x1 = x0 - i1 + G3; // Offsets for second corner in (x,y,z) coords
final double y1 = y0 - j1 + G3;
final double z1 = z0 - k1 + G3;
final double x2 = x0 - i2 + 2.0 * G3; // Offsets for third corner in (x,y,z) coords
final double y2 = y0 - j2 + 2.0 * G3;
final double z2 = z0 - k2 + 2.0 * G3;
final double x3 = x0 - 1.0 + 3.0 * G3; // Offsets for last corner in (x,y,z) coords
final double y3 = y0 - 1.0 + 3.0 * G3;
final double z3 = z0 - 1.0 + 3.0 * G3;
// Work out the hashed gradient indices of the four simplex corners
final int ii = i & 255;
final int jj = j & 255;
final int kk = k & 255;
final int gi0 = perm[ii + perm[jj + perm[kk]]] % 12;
final int gi1 = perm[ii + i1 + perm[jj + j1 + perm[kk + k1]]] % 12;
final int gi2 = perm[ii + i2 + perm[jj + j2 + perm[kk + k2]]] % 12;
final int gi3 = perm[ii + 1 + perm[jj + 1 + perm[kk + 1]]] % 12;
// Calculate the contribution from the four corners
double t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0;
if (t0 < 0) {
n0 = 0.0;
} else {
t0 *= t0;
n0 = t0 * t0 * dot(grad3[gi0], x0, y0, z0);
}
double t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1;
if (t1 < 0) {
n1 = 0.0;
} else {
t1 *= t1;
n1 = t1 * t1 * dot(grad3[gi1], x1, y1, z1);
}
double t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2;
if (t2 < 0) {
n2 = 0.0;
} else {
t2 *= t2;
n2 = t2 * t2 * dot(grad3[gi2], x2, y2, z2);
}
double t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3;
if (t3 < 0) {
n3 = 0.0;
} else {
t3 *= t3;
n3 = t3 * t3 * dot(grad3[gi3], x3, y3, z3);
}
// Add contributions from each corner to get the final noise value.
// The result is scaled to stay just inside [-1,1]
return 32.0 * (n0 + n1 + n2 + n3);
}
// 2D simplex noise
public static double noise(final double xin, final double yin) {
double n0, n1, n2; // Noise contributions from the three corners
// Skew the input space to determine which simplex cell we're in
final double F2 = 0.5 * (Math.sqrt(3.0) - 1.0);
final double s = (xin + yin) * F2; // Hairy factor for 2D
final int i = (int) MathUtils.floor(xin + s);
final int j = (int) MathUtils.floor(yin + s);
final double G2 = (3.0 - Math.sqrt(3.0)) / 6.0;
final double t = (i + j) * G2;
final double X0 = i - t; // Unskew the cell origin back to (x,y) space
final double Y0 = j - t;
final double x0 = xin - X0; // The x,y distances from the cell origin
final double y0 = yin - Y0;
// For the 2D case, the simplex shape is an equilateral triangle.
// Determine which simplex we are in.
int i1, j1; // Offsets for second (middle) corner of simplex in (i,j) coords
if (x0 > y0) {
i1 = 1;
j1 = 0;
} // lower triangle, XY order: (0,0)->(1,0)->(1,1)
else {
i1 = 0;
j1 = 1;
} // upper triangle, YX order: (0,0)->(0,1)->(1,1)
// A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and
// a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where
// c = (3-sqrt(3))/6
final double x1 = x0 - i1 + G2; // Offsets for middle corner in (x,y) unskewed coords
final double y1 = y0 - j1 + G2;
final double x2 = x0 - 1.0 + 2.0 * G2; // Offsets for last corner in (x,y) unskewed coords
final double y2 = y0 - 1.0 + 2.0 * G2;
// Work out the hashed gradient indices of the three simplex corners
final int ii = i & 255;
final int jj = j & 255;
final int gi0 = perm[ii + perm[jj]] % 12;
final int gi1 = perm[ii + i1 + perm[jj + j1]] % 12;
final int gi2 = perm[ii + 1 + perm[jj + 1]] % 12;
// Calculate the contribution from the three corners
double t0 = 0.5 - x0 * x0 - y0 * y0;
if (t0 < 0) {
n0 = 0.0;
} else {
t0 *= t0;
n0 = t0 * t0 * dot(grad3[gi0], x0, y0); // (x,y) of grad3 used for 2D gradient
}
double t1 = 0.5 - x1 * x1 - y1 * y1;
if (t1 < 0) {
n1 = 0.0;
} else {
t1 *= t1;
n1 = t1 * t1 * dot(grad3[gi1], x1, y1);
}
double t2 = 0.5 - x2 * x2 - y2 * y2;
if (t2 < 0) {
n2 = 0.0;
} else {
t2 *= t2;
n2 = t2 * t2 * dot(grad3[gi2], x2, y2);
}
// Add contributions from each corner to get the final noise value.
// The result is scaled to return values in the interval [-1,1].
return 70.0 * (n0 + n1 + n2);
}
