public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox();
foreach (Instance i in instances)
bounds.include(i.getBounds());
return bounds;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox(1.5f);
if (o2w != null)
bounds = o2w.transform(bounds);
return bounds;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox();
if (o2w == null)
{
for (int i = 0; i < patches.Length; i++)
{
float[] patch = patches[i];
for (int j = 0; j < patch.Length; j += 3)
bounds.include(patch[j], patch[j + 1], patch[j + 2]);
}
}
else
{
// transform vertices first
for (int i = 0; i < patches.Length; i++)
{
float[] patch = patches[i];
for (int j = 0; j < patch.Length; j += 3)
{
float x = patch[j];
float y = patch[j + 1];
float z = patch[j + 2];
float wx = o2w.transformPX(x, y, z);
float wy = o2w.transformPY(x, y, z);
float wz = o2w.transformPZ(x, y, z);
bounds.include(wx, wy, wz);
}
}
}
return bounds;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox(minX, minY, minZ);
bounds.include(maxX, maxY, maxZ);
if (o2w == null)
return bounds;
return o2w.transform(bounds);
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox(-ro - ri, -ro - ri, -ri);
bounds.include(ro + ri, ro + ri, ri);
if (o2w != null)
bounds = o2w.transform(bounds);
return bounds;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox();
for (int i = 0, i3 = 0; i < n; i++, i3 += 3)
bounds.include(particles[i3], particles[i3 + 1], particles[i3 + 2]);
bounds.include(bounds.getMinimum().x - r, bounds.getMinimum().y - r, bounds.getMinimum().z - r);
bounds.include(bounds.getMaximum().x + r, bounds.getMaximum().y + r, bounds.getMaximum().z + r);
return o2w == null ? bounds : o2w.transform(bounds);
}
public static Instance createTemporary(PrimitiveList primitives, Matrix4 transform, IShader shader)
{
Instance i = new Instance();
i.o2w = new MovingMatrix4(transform);
i.w2o = i.o2w.inverse();
if (i.w2o == null) {
UI.printError(UI.Module.GEOM, "Unable to compute transform inverse");
return null;
}
i.geometry = new Geometry(primitives);
i.shaders = new IShader[] { shader };
i.updateBounds();
return i;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox();
if (o2w == null)
{
for (int i = 0; i < points.Length; i += 3)
bounds.include(points[i], points[i + 1], points[i + 2]);
}
else
{
// transform vertices first
for (int i = 0; i < points.Length; i += 3)
{
float x = points[i];
float y = points[i + 1];
float z = points[i + 2];
float wx = o2w.transformPX(x, y, z);
float wy = o2w.transformPY(x, y, z);
float wz = o2w.transformPZ(x, y, z);
bounds.include(wx, wy, wz);
}
}
return bounds;
}
/**
* Creates a rotation matrix about the Z axis.
*
* @param theta angle to rotate about the Z axis in radians
* @return a new Matrix4 object representing the rotation
*/
public static Matrix4 rotateZ(float theta)
{
Matrix4 m = new Matrix4();
float s = (float)Math.Sin(theta);
float c = (float)Math.Cos(theta);
m.m22 = m.m33 = 1;
m.m00 = m.m11 = c;
m.m01 = -s;
m.m10 = +s;
return m;
}
/**
* Create a new ray by transforming the supplied one by the given matrix. If
* the matrix is <code>null</code>, the original ray is returned.
*
* @param m matrix to transform the ray by
*/
public Ray transform(Matrix4 m)
{
if (m == null)
return this;
Ray r = new Ray();
r.ox = m.transformPX(ox, oy, oz);
r.oy = m.transformPY(ox, oy, oz);
r.oz = m.transformPZ(ox, oy, oz);
r.dx = m.transformVX(dx, dy, dz);
r.dy = m.transformVY(dx, dy, dz);
r.dz = m.transformVZ(dx, dy, dz);
r.tMin = tMin;
r.tMax = tMax;
return r;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox(getPrimitiveBound(0, 1));
if (o2w != null)
bounds = o2w.transform(bounds);
return bounds;
}
/**
* Create a translation matrix for the specified vector.
*
* @param x x component of translation
* @param y y component of translation
* @param z z component of translation
* @return a new Matrix4 object representing the translation
*/
public static Matrix4 translation(float x, float y, float z)
{
Matrix4 m = new Matrix4();
m.m00 = m.m11 = m.m22 = m.m33 = 1;
m.m03 = x;
m.m13 = y;
m.m23 = z;
return m;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
if (o2w == null)
return bounds;
return o2w.transform(bounds);
}
/**
* Constructs a simple static matrix.
*
* @param m matrix value at all times
*/
public MovingMatrix4(Matrix4 m)
{
transforms = new Matrix4[] { m };
t0 = t1 = 0;
inv = 1;
}
/**
* Declare a parameter with the specified name and value. This parameter
* will be added to the currently active parameter list.
*
* @param name parameter name
* @param value parameter value
*/
public void parameter(string name, Matrix4 value)
{
parameterList.addMatrices(name, ParameterList.InterpolationType.NONE, value.asRowMajor());
}
private void parseObjectBlock(SunflowAPI api)
{
p.checkNextToken("{");
bool noInstance = false;
Matrix4[] transform = null;
float transformTime0 = 0, transformTime1 = 0;
string name = null;
string[] shaders = null;
string[] modifiers = null;
if (p.peekNextToken("noinstance"))
{
// this indicates that the geometry is to be created, but not
// instanced into the scene
noInstance = true;
}
else
{
// these are the parameters to be passed to the instance
if (p.peekNextToken("shaders"))
{
int n = p.getNextInt();
shaders = new string[n];
for (int i = 0; i < n; i++)
shaders[i] = p.getNextToken();
}
else
{
p.checkNextToken("shader");
shaders = new string[] { p.getNextToken() };
}
if (p.peekNextToken("modifiers"))
{
int n = p.getNextInt();
modifiers = new string[n];
for (int i = 0; i < n; i++)
modifiers[i] = p.getNextToken();
}
else if (p.peekNextToken("modifier"))
modifiers = new string[] { p.getNextToken() };
if (p.peekNextToken("transform")) {
if (p.peekNextToken("steps")) {
transform = new Matrix4[p.getNextInt()];
p.checkNextToken("times");
transformTime0 = p.getNextFloat();
transformTime1 = p.getNextFloat();
for (int i = 0; i < transform.Length; i++)
transform[i] = parseMatrix();
} else
transform = new Matrix4[] { parseMatrix() };
}
}
if (p.peekNextToken("accel"))
api.parameter("accel", p.getNextToken());
p.checkNextToken("type");
string type = p.getNextToken();
if (p.peekNextToken("name"))
name = p.getNextToken();
else
name = generateUniqueName(type);
if (type == "mesh")
{
UI.printWarning(UI.Module.API, "Deprecated object type: mesh");
UI.printInfo(UI.Module.API, "Reading mesh: {0} ...", name);
int numVertices = p.getNextInt();
int numTriangles = p.getNextInt();
float[] points = new float[numVertices * 3];
float[] normals = new float[numVertices * 3];
float[] uvs = new float[numVertices * 2];
for (int i = 0; i < numVertices; i++)
{
p.checkNextToken("v");
points[3 * i + 0] = p.getNextFloat();
points[3 * i + 1] = p.getNextFloat();
points[3 * i + 2] = p.getNextFloat();
normals[3 * i + 0] = p.getNextFloat();
normals[3 * i + 1] = p.getNextFloat();
normals[3 * i + 2] = p.getNextFloat();
uvs[2 * i + 0] = p.getNextFloat();
uvs[2 * i + 1] = p.getNextFloat();
}
int[] triangles = new int[numTriangles * 3];
for (int i = 0; i < numTriangles; i++)
{
p.checkNextToken("t");
triangles[i * 3 + 0] = p.getNextInt();
triangles[i * 3 + 1] = p.getNextInt();
triangles[i * 3 + 2] = p.getNextInt();
}
// create geometry
api.parameter("triangles", triangles);
api.parameter("points", "point", "vertex", points);
api.parameter("normals", "vector", "vertex", normals);
api.parameter("uvs", "texcoord", "vertex", uvs);
api.geometry(name, "triangle_mesh");
}
else if (type == "flat-mesh")
{
UI.printWarning(UI.Module.API, "Deprecated object type: flat-mesh");
UI.printInfo(UI.Module.API, "Reading flat mesh: {0} ...", name);
int numVertices = p.getNextInt();
int numTriangles = p.getNextInt();
float[] points = new float[numVertices * 3];
float[] uvs = new float[numVertices * 2];
for (int i = 0; i < numVertices; i++)
{
p.checkNextToken("v");
points[3 * i + 0] = p.getNextFloat();
points[3 * i + 1] = p.getNextFloat();
points[3 * i + 2] = p.getNextFloat();
p.getNextFloat();
p.getNextFloat();
p.getNextFloat();
uvs[2 * i + 0] = p.getNextFloat();
uvs[2 * i + 1] = p.getNextFloat();
}
int[] triangles = new int[numTriangles * 3];
for (int i = 0; i < numTriangles; i++)
{
p.checkNextToken("t");
triangles[i * 3 + 0] = p.getNextInt();
triangles[i * 3 + 1] = p.getNextInt();
triangles[i * 3 + 2] = p.getNextInt();
}
// create geometry
api.parameter("triangles", triangles);
api.parameter("points", "point", "vertex", points);
api.parameter("uvs", "texcoord", "vertex", uvs);
api.geometry(name, "triangle_mesh");
}
else if (type == "sphere")
{
UI.printInfo(UI.Module.API, "Reading sphere ...");
api.geometry(name, "sphere");
if (transform == null && !noInstance)
{
// legacy method of specifying transformation for spheres
p.checkNextToken("c");
float x = p.getNextFloat();
float y = p.getNextFloat();
float z = p.getNextFloat();
p.checkNextToken("r");
float radius = p.getNextFloat();
api.parameter("transform", Matrix4.translation(x, y, z).multiply(Matrix4.scale(radius)));
api.parameter("shaders", shaders);
if (modifiers != null)
api.parameter("modifiers", modifiers);
api.instance(name + ".instance", name);
// disable future auto-instancing - instance has already been created
noInstance = true;
}
}
else if (type.Equals("cylinder"))
{
UI.printInfo(UI.Module.API, "Reading cylinder ...");
api.geometry(name, "cylinder");
}
else if (type == "banchoff")
{
UI.printInfo(UI.Module.API, "Reading banchoff ...");
api.geometry(name, "banchoff");
}
else if (type == "torus")
{
UI.printInfo(UI.Module.API, "Reading torus ...");
p.checkNextToken("r");
api.parameter("radiusInner", p.getNextFloat());
api.parameter("radiusOuter", p.getNextFloat());
api.geometry(name, "torus");
}
else if (type.Equals("sphereflake")) {
UI.printInfo(UI.Module.API, "Reading sphereflake ...");
if (p.peekNextToken("level"))
api.parameter("level", p.getNextInt());
if (p.peekNextToken("axis"))
api.parameter("axis", parseVector());
if (p.peekNextToken("radius"))
api.parameter("radius", p.getNextFloat());
api.geometry(name, "sphereflake");
}
else if (type == "plane")
{
UI.printInfo(UI.Module.API, "Reading plane ...");
p.checkNextToken("p");
api.parameter("center", parsePoint());
if (p.peekNextToken("n"))
{
api.parameter("normal", parseVector());
}
else
{
p.checkNextToken("p");
api.parameter("point1", parsePoint());
p.checkNextToken("p");
api.parameter("point2", parsePoint());
}
api.geometry(name, "plane");
}
else if (type == "generic-mesh")
{
UI.printInfo(UI.Module.API, "Reading generic mesh: {0} ... ", name);
// parse vertices
p.checkNextToken("points");
int np = p.getNextInt();
api.parameter("points", "point", "vertex", parseFloatArray(np * 3));
// parse triangle indices
p.checkNextToken("triangles");
int nt = p.getNextInt();
api.parameter("triangles", parseIntArray(nt * 3));
// parse normals
p.checkNextToken("normals");
if (p.peekNextToken("vertex"))
api.parameter("normals", "vector", "vertex", parseFloatArray(np * 3));
else if (p.peekNextToken("facevarying"))
api.parameter("normals", "vector", "facevarying", parseFloatArray(nt * 9));
else
p.checkNextToken("none");
// parse texture coordinates
p.checkNextToken("uvs");
if (p.peekNextToken("vertex"))
api.parameter("uvs", "texcoord", "vertex", parseFloatArray(np * 2));
else if (p.peekNextToken("facevarying"))
api.parameter("uvs", "texcoord", "facevarying", parseFloatArray(nt * 6));
else
p.checkNextToken("none");
if (p.peekNextToken("face_shaders"))
api.parameter("faceshaders", parseIntArray(nt));
api.geometry(name, "triangle_mesh");
}
else if (type == "hair")
{
UI.printInfo(UI.Module.API, "Reading hair curves: {0} ... ", name);
p.checkNextToken("segments");
api.parameter("segments", p.getNextInt());
p.checkNextToken("width");
api.parameter("widths", p.getNextFloat());
p.checkNextToken("points");
api.parameter("points", "point", "vertex", parseFloatArray(p.getNextInt()));
api.geometry(name, "hair");
}
else if (type == "csharp-tesselatable")
{
UI.printInfo(UI.Module.API, "Reading procedural primitive: {0} ... ", name);
string code = p.getNextCodeBlock();
try
{
String typename = p.peekNextToken("typename") ? p.getNextToken() : PluginRegistry.tesselatablePlugins.generateUniqueName(name);
if (!PluginRegistry.tesselatablePlugins.registerPlugin(typename, code))
return;
api.geometry(name, typename);
}
catch (Exception e)
{
UI.printDetailed(UI.Module.API, "Compiling: {0}", code);
UI.printError(UI.Module.API, "{0}", e);
noInstance = true;
}
}
else if (type == "teapot")
{
UI.printInfo(UI.Module.API, "Reading teapot: {0} ... ", name);
if (p.peekNextToken("subdivs"))
{
api.parameter("subdivs", p.getNextInt());
}
if (p.peekNextToken("smooth"))
{
api.parameter("smooth", p.getNextbool());
}
api.geometry(name, "teapot");
}
else if (type == "gumbo")
{
UI.printInfo(UI.Module.API, "Reading gumbo:{0} ... ", name);
if (p.peekNextToken("subdivs"))
{
api.parameter("subdivs", p.getNextInt());
}
if (p.peekNextToken("smooth"))
{
api.parameter("smooth", p.getNextbool());
}
api.geometry(name, "gumbo");
}
else if (type == "julia")
{
UI.printInfo(UI.Module.API, "Reading julia fractal: {0} ... ", name);
if (p.peekNextToken("q"))
{
api.parameter("cw", p.getNextFloat());
api.parameter("cx", p.getNextFloat());
api.parameter("cy", p.getNextFloat());
api.parameter("cz", p.getNextFloat());
}
if (p.peekNextToken("iterations"))
api.parameter("iterations", p.getNextInt());
if (p.peekNextToken("epsilon"))
api.parameter("epsilon", p.getNextFloat());
api.geometry(name, "julia");
}
else if (type == "particles" || type == "dlasurface")
{
if (type == "dlasurface")
UI.printWarning(UI.Module.API, "Deprecated object type: \"dlasurface\" - please use \"particles\" instead");
float[] data;
if (p.peekNextToken("filename")) {
string filename = p.getNextToken();
bool littleEndian = false;
if (p.peekNextToken("little_endian"))
littleEndian = true;
UI.printInfo(UI.Module.USER, "Loading particle file: {0}", filename);
//File file = new File(filename);
//FileInputStream stream = new FileInputStream(filename);
//MappedByteBuffer map = stream.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, file.Length());
//if (littleEndian)
// map.order(ByteOrder.LITTLE_ENDIAN);
//FloatBuffer buffer = map.asFloatBuffer();
BinaryReader reader = new BinaryReader(File.OpenRead(filename));
data = new float[reader.BaseStream.Length / 4];
if (!littleEndian) {
for (int i = 0; i < data.Length; i++) {
byte[] newBytes = reader.ReadBytes(4);
Array.Reverse(newBytes);
data[i] = BitConverter.ToSingle(newBytes, 0);//buffer.get(i);
// UI.printInfo(UI.Module.USER, " particle {0}: {1}", i, data[i]);
}
} else {
for (int i = 0; i < data.Length; i++) {
data[i] = BitConverter.ToSingle(reader.ReadBytes(4), 0);//buffer.get(i);
// UI.printInfo(UI.Module.USER, " particle {0}: {1}", i, data[i]);
}
}
reader.Close();
} else {
p.checkNextToken("points");
int n = p.getNextInt();
data = parseFloatArray(n * 3); // read 3n points
}
api.parameter("particles", "point", "vertex", data);
if (p.peekNextToken("num"))
api.parameter("num", p.getNextInt());
else
api.parameter("num", data.Length / 3);
p.checkNextToken("radius");
api.parameter("radius", p.getNextFloat());
api.geometry(name, "particles");
}
else if (type == "file-mesh")
{
UI.printInfo(UI.Module.API, "Reading file mesh: {0} ... ", name);
p.checkNextToken("filename");
api.parameter("filename", p.getNextToken());
if (p.peekNextToken("smooth_normals"))
api.parameter("smooth_normals", p.getNextbool());
api.geometry(name, "file_mesh");
}
else if (type == "bezier-mesh")
{
UI.printInfo(UI.Module.API, "Reading bezier mesh: {0} ... ", name);
p.checkNextToken("n");
int nu, nv;
api.parameter("nu", nu = p.getNextInt());
api.parameter("nv", nv = p.getNextInt());
if (p.peekNextToken("wrap"))
{
api.parameter("uwrap", p.getNextbool());
api.parameter("vwrap", p.getNextbool());
}
p.checkNextToken("points");
float[] points = new float[3 * nu * nv];
for (int i = 0; i < points.Length; i++)
points[i] = p.getNextFloat();
api.parameter("points", "point", "vertex", points);
if (p.peekNextToken("subdivs"))
api.parameter("subdivs", p.getNextInt());
if (p.peekNextToken("smooth"))
api.parameter("smooth", p.getNextbool());
api.geometry(name, "bezier_mesh");
}
else
{
UI.printWarning(UI.Module.API, "Unrecognized object type: {0}", p.getNextToken());
noInstance = true;
}
if (!noInstance)
{
// create instance
api.parameter("shaders", shaders);
if (modifiers != null)
api.parameter("modifiers", modifiers);
if (transform != null && transform.Length > 0) {
if (transform.Length == 1)
api.parameter("transform", transform[0]);
else {
api.parameter("transform.steps", transform.Length);
api.parameter("transform.times", "float", "none", new float[] {
transformTime0, transformTime1 });
for (int i = 0; i < transform.Length; i++)
api.parameter(string.Format("transform[{0}]", i), transform[i]);
}
}
api.instance(name + ".instance", name);
}
p.checkNextToken("}");
}
/**
* Get the specified matrix parameter from this list.
*
* @param name name of the parameter
* @param defaultValue value to return if not found
* @return the value of the parameter specified or default value if not
* found
*/
public Matrix4 getMatrix(string name, Matrix4 defaultValue)
{
Parameter p;
if (list.TryGetValue(name, out p))
if (isValidParameter(name, ParameterType.MATRIX, InterpolationType.NONE, 1, p))
return p.getMatrix();
return defaultValue;
}
/**
* Computes this*m and return the result as a new Matrix4
*
* @param m right hand side of the multiplication
* @return a new Matrix4 object equal to <code>this*m</code>
*/
public Matrix4 multiply(Matrix4 m)
{
// matrix multiplication is m[r][c] = (row[r]).(col[c])
float rm00 = m00 * m.m00 + m01 * m.m10 + m02 * m.m20 + m03 * m.m30;
float rm01 = m00 * m.m01 + m01 * m.m11 + m02 * m.m21 + m03 * m.m31;
float rm02 = m00 * m.m02 + m01 * m.m12 + m02 * m.m22 + m03 * m.m32;
float rm03 = m00 * m.m03 + m01 * m.m13 + m02 * m.m23 + m03 * m.m33;
float rm10 = m10 * m.m00 + m11 * m.m10 + m12 * m.m20 + m13 * m.m30;
float rm11 = m10 * m.m01 + m11 * m.m11 + m12 * m.m21 + m13 * m.m31;
float rm12 = m10 * m.m02 + m11 * m.m12 + m12 * m.m22 + m13 * m.m32;
float rm13 = m10 * m.m03 + m11 * m.m13 + m12 * m.m23 + m13 * m.m33;
float rm20 = m20 * m.m00 + m21 * m.m10 + m22 * m.m20 + m23 * m.m30;
float rm21 = m20 * m.m01 + m21 * m.m11 + m22 * m.m21 + m23 * m.m31;
float rm22 = m20 * m.m02 + m21 * m.m12 + m22 * m.m22 + m23 * m.m32;
float rm23 = m20 * m.m03 + m21 * m.m13 + m22 * m.m23 + m23 * m.m33;
float rm30 = m30 * m.m00 + m31 * m.m10 + m32 * m.m20 + m33 * m.m30;
float rm31 = m30 * m.m01 + m31 * m.m11 + m32 * m.m21 + m33 * m.m31;
float rm32 = m30 * m.m02 + m31 * m.m12 + m32 * m.m22 + m33 * m.m32;
float rm33 = m30 * m.m03 + m31 * m.m13 + m32 * m.m23 + m33 * m.m33;
return new Matrix4(rm00, rm01, rm02, rm03, rm10, rm11, rm12, rm13, rm20, rm21, rm22, rm23, rm30, rm31, rm32, rm33);
}
/**
* Compute the inverse of this matrix and return it as a new object. If the
* matrix is not invertible, <code>null</code> is returned.
*
* @return the inverse of this matrix, or <code>null</code> if not
* invertible
*/
public Matrix4 inverse()
{
float A0 = m00 * m11 - m01 * m10;
float A1 = m00 * m12 - m02 * m10;
float A2 = m00 * m13 - m03 * m10;
float A3 = m01 * m12 - m02 * m11;
float A4 = m01 * m13 - m03 * m11;
float A5 = m02 * m13 - m03 * m12;
float B0 = m20 * m31 - m21 * m30;
float B1 = m20 * m32 - m22 * m30;
float B2 = m20 * m33 - m23 * m30;
float B3 = m21 * m32 - m22 * m31;
float B4 = m21 * m33 - m23 * m31;
float B5 = m22 * m33 - m23 * m32;
float det = A0 * B5 - A1 * B4 + A2 * B3 + A3 * B2 - A4 * B1 + A5 * B0;
if (Math.Abs(det) < 1e-12f)
return null; // matrix is not invertible
float invDet = 1 / det;
Matrix4 inv = new Matrix4();
inv.m00 = (+m11 * B5 - m12 * B4 + m13 * B3) * invDet;
inv.m10 = (-m10 * B5 + m12 * B2 - m13 * B1) * invDet;
inv.m20 = (+m10 * B4 - m11 * B2 + m13 * B0) * invDet;
inv.m30 = (-m10 * B3 + m11 * B1 - m12 * B0) * invDet;
inv.m01 = (-m01 * B5 + m02 * B4 - m03 * B3) * invDet;
inv.m11 = (+m00 * B5 - m02 * B2 + m03 * B1) * invDet;
inv.m21 = (-m00 * B4 + m01 * B2 - m03 * B0) * invDet;
inv.m31 = (+m00 * B3 - m01 * B1 + m02 * B0) * invDet;
inv.m02 = (+m31 * A5 - m32 * A4 + m33 * A3) * invDet;
inv.m12 = (-m30 * A5 + m32 * A2 - m33 * A1) * invDet;
inv.m22 = (+m30 * A4 - m31 * A2 + m33 * A0) * invDet;
inv.m32 = (-m30 * A3 + m31 * A1 - m32 * A0) * invDet;
inv.m03 = (-m21 * A5 + m22 * A4 - m23 * A3) * invDet;
inv.m13 = (+m20 * A5 - m22 * A2 + m23 * A1) * invDet;
inv.m23 = (-m20 * A4 + m21 * A2 - m23 * A0) * invDet;
inv.m33 = (+m20 * A3 - m21 * A1 + m22 * A0) * invDet;
return inv;
}
public BoundingBox GetWorldBounds(Matrix4 o2w)
{
if (o2w == null)
return bb;
return o2w.transform(bb);
}
public bool update(ParameterList pl, SunflowAPI api)
{
string geometryName = pl.getstring("geometry", null);
if (geometry == null || geometryName != null)
{
if (geometryName == null)
{
UI.printError(UI.Module.GEOM, "geometry parameter missing - unable to create instance");
return false;
}
geometry = api.lookupGeometry(geometryName);
if (geometry == null)
{
UI.printError(UI.Module.GEOM, "Geometry \"{0}\" was not declared yet - instance is invalid", geometryName);
return false;
}
}
string[] shaderNames = pl.getstringArray("shaders", null);
if (shaderNames != null)
{
// new shader names have been provided
shaders = new IShader[shaderNames.Length];
for (int i = 0; i < shaders.Length; i++)
{
shaders[i] = api.lookupShader(shaderNames[i]);
if (shaders[i] == null)
UI.printWarning(UI.Module.GEOM, "Shader \"{0}\" was not declared yet - ignoring", shaderNames[i]);
}
}
else
{
// re-use existing shader array
}
string[] modifierNames = pl.getstringArray("modifiers", null);
if (modifierNames != null)
{
// new modifier names have been provided
modifiers = new Modifier[modifierNames.Length];
for (int i = 0; i < modifiers.Length; i++)
{
modifiers[i] = api.lookupModifier(modifierNames[i]);
if (modifiers[i] == null)
UI.printWarning(UI.Module.GEOM, "Modifier \"{0}\" was not declared yet - ignoring", modifierNames[i]);
}
}
Matrix4 transform = pl.getMatrix("transform", o2w);
if (transform != o2w)
{
o2w = transform;
if (o2w != null)
{
w2o = o2w.inverse();
if (w2o == null)
{
UI.printError(UI.Module.GEOM, "Unable to compute transform inverse - determinant is: {0}", o2w.determinant());
return false;
}
}
else
o2w = w2o = null;
}
return true;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
return null;
}
/**
* Updates the matrix for the given time step.
*
* @param i time step to update
* @param m new value for the matrix at this time step
*/
public void updateData(int i, Matrix4 m)
{
transforms[i] = m;
}
/**
* Creates a rotation matrix about the specified axis. The axis vector need
* not be normalized.
*
* @param x x component of the axis vector
* @param y y component of the axis vector
* @param z z component of the axis vector
* @param theta angle to rotate about the axis in radians
* @return a new Matrix4 object representing the rotation
*/
public static Matrix4 rotate(float x, float y, float z, float theta)
{
Matrix4 m = new Matrix4();
float invLen = 1 / (float)Math.Sqrt(x * x + y * y + z * z);
x *= invLen;
y *= invLen;
z *= invLen;
float s = (float)Math.Sin(theta);
float c = (float)Math.Cos(theta);
float t = 1 - c;
m.m00 = t * x * x + c;
m.m11 = t * y * y + c;
m.m22 = t * z * z + c;
float txy = t * x * y;
float sz = s * z;
m.m01 = txy - sz;
m.m10 = txy + sz;
float txz = t * x * z;
float sy = s * y;
m.m02 = txz + sy;
m.m20 = txz - sy;
float tyz = t * y * z;
float sx = s * x;
m.m12 = tyz - sx;
m.m21 = tyz + sx;
m.m33 = 1;
return m;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
if (primitives == null)
{
BoundingBox b = tesselatable.getWorldBounds(o2w);
if (b != null)
return b;
if (builtTess == 0)
tesselate();
if (primitives == null)
return null; // failed tesselation, return infinite bounding
// box
}
return primitives.getWorldBounds(o2w);
}
/**
* Create a uniform scaling matrix.
*
* @param s scale factor for all three axes
* @return a new Matrix4 object representing the uniform scale
*/
public static Matrix4 scale(float s)
{
Matrix4 m = new Matrix4();
m.m00 = m.m11 = m.m22 = s;
m.m33 = 1;
return m;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox();
for (int i = 0, j = 0; i < points.Length; i += 3, j++)
{
float w = 0.5f * getWidth(j);
bounds.include(points[i] - w, points[i + 1] - w, points[i + 2] - w);
bounds.include(points[i] + w, points[i + 1] + w, points[i + 2] + w);
}
if (o2w != null)
bounds = o2w.transform(bounds);
return bounds;
}
/**
* Creates a non-uniform scaling matrix.
*
* @param sx scale factor in the x dimension
* @param sy scale factor in the y dimension
* @param sz scale factor in the z dimension
* @return a new Matrix4 object representing the non-uniform scale
*/
public static Matrix4 scale(float sx, float sy, float sz)
{
Matrix4 m = new Matrix4();
m.m00 = sx;
m.m11 = sy;
m.m22 = sz;
m.m33 = 1;
return m;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
// world bounds can't be computed without reading file
// return null so the mesh will be loaded right away
return null;
}
public BoundingBox getWorldBounds(Matrix4 o2w)
{
BoundingBox bounds = new BoundingBox();
if (o2w == null)
{
for (int i = 0; i < triangleMesh.uvs.data.Length; i += 2)
bounds.include(triangleMesh.uvs.data[i], triangleMesh.uvs.data[i + 1], 0);
}
else
{
// transform vertices first
for (int i = 0; i < triangleMesh.uvs.data.Length; i += 2)
{
float x = triangleMesh.uvs.data[i];
float y = triangleMesh.uvs.data[i + 1];
float wx = o2w.transformPX(x, y, 0);
float wy = o2w.transformPY(x, y, 0);
float wz = o2w.transformPZ(x, y, 0);
bounds.include(wx, wy, wz);
}
}
return bounds;
}
