public void load3ds(String filename, int count, float angle_y, float z_adjust, float scale) {
if (meshCache.get(filename + ("" + angle_y) + count) == null) {
ArrayByte is = BaseIO.loadArrayByte(filename);
byte buffer[] = new byte[is.available()];
is.read(buffer);
this.mMeshPosition = new float[3];
currentcount = 0;
eatChunk(buffer, 0, count, angle_y, z_adjust, scale);
is.close();
this.mMeshName = filename;
this.mMeshPosition = null;
D3DMesh.storeMesh(filename + ("" + angle_y) + count, this);
} else {
this.copyReference(D3DMesh.getMesh(filename + ("" + angle_y) + count));
}
}
public static D3DMesh createSphere(int nbSlices, int nbStairs, float radius) {
D3DMesh mesh = new D3DMesh();
int triangleCount = nbSlices * (nbStairs) * 2;
mesh.mVertices = FloatBuffer.allocate(D3DMesh.nbFloatPerVertex * 3 * triangleCount);
mesh.mIndices = CharBuffer.allocate(triangleCount * 3);
int indice = 0;
for (int i = 0; i < nbStairs; i++) {
for (int j = 0; j < nbSlices; j++) {
float alpha = MathUtils.PI / (nbStairs) * i;
float beta = MathUtils.PI * 2 / nbSlices * j;
float alpha1 = MathUtils.PI / (nbStairs) * ((i + 1));
float beta1 = MathUtils.PI * 2 / nbSlices * ((j + 1));
if (j == nbSlices - 1) {
beta1 = 0.f;
}
D3DVector a =
new D3DVector(
radius * MathUtils.sin(alpha) * MathUtils.cos(beta),
radius * MathUtils.cos(alpha),
radius * MathUtils.sin(alpha) * MathUtils.sin(beta));
D3DVector b =
new D3DVector(
radius * MathUtils.sin(alpha) * MathUtils.cos(beta1),
radius * MathUtils.cos(alpha),
radius * MathUtils.sin(alpha) * MathUtils.sin(beta1));
D3DVector c =
new D3DVector(
radius * MathUtils.sin(alpha1) * MathUtils.cos(beta1),
radius * MathUtils.cos(alpha1),
radius * MathUtils.sin(alpha1) * MathUtils.sin(beta1));
D3DVector d =
new D3DVector(
radius * MathUtils.sin(alpha1) * MathUtils.cos(beta),
radius * MathUtils.cos(alpha1),
radius * MathUtils.sin(alpha1) * MathUtils.sin(beta));
mesh.mVertices.put(a.get(0));
mesh.mVertices.put(a.get(1));
mesh.mVertices.put(a.get(2));
mesh.mVertices.put(a.get(0) / radius);
mesh.mVertices.put(a.get(1) / radius);
mesh.mVertices.put(a.get(2) / radius);
mesh.mVertices.put((float) (nbSlices - j + 0) / (float) nbSlices);
mesh.mVertices.put((float) (i + 0) / (float) nbStairs);
mesh.mVertices.put(b.get(0));
mesh.mVertices.put(b.get(1));
mesh.mVertices.put(b.get(2));
mesh.mVertices.put(b.get(0) / radius);
mesh.mVertices.put(b.get(1) / radius);
mesh.mVertices.put(b.get(2) / radius);
mesh.mVertices.put((float) (nbSlices - (j + 1)) / (float) nbSlices);
mesh.mVertices.put((float) (i + 0) / (float) nbStairs);
mesh.mVertices.put(c.get(0));
mesh.mVertices.put(c.get(1));
mesh.mVertices.put(c.get(2));
// normal not computed here
mesh.mVertices.put(c.get(0) / radius);
mesh.mVertices.put(c.get(1) / radius);
mesh.mVertices.put(c.get(2) / radius);
mesh.mVertices.put((float) (nbSlices - (j + 1)) / (float) nbSlices);
mesh.mVertices.put((float) (i + 1) / (float) nbStairs);
mesh.mVertices.put(d.get(0));
mesh.mVertices.put(d.get(1));
mesh.mVertices.put(d.get(2));
mesh.mVertices.put(d.get(0) / radius);
mesh.mVertices.put(d.get(1) / radius);
mesh.mVertices.put(d.get(2) / radius);
mesh.mVertices.put((float) (nbSlices - j + 0) / (float) nbSlices);
mesh.mVertices.put((float) (i + 1) / (float) nbStairs);
mesh.mIndices.put((char) (indice + 0));
mesh.mIndices.put((char) (indice + 2));
mesh.mIndices.put((char) (indice + 1));
mesh.mIndices.put((char) (indice + 2));
mesh.mIndices.put((char) (indice + 0));
mesh.mIndices.put((char) (indice + 3));
indice = mesh.mVertices.position() / D3DMesh.nbFloatPerVertex;
}
}
mesh.mIndices.position(0);
mesh.mVertices.position(0);
return mesh;
}
public D3DMesh buildShadowVolume(D3DVector lightVector) {
int nbface = this.mIndices.capacity() / 3;
int trianglecount = 0;
D3DMesh shadowMesh = new D3DMesh();
boolean faceToLight[] = new boolean[nbface];
D3DVector v0 = new D3DVector();
D3DVector v1 = new D3DVector();
D3DVector v2 = new D3DVector();
D3DVector vm1 = new D3DVector();
D3DVector vm2 = new D3DVector();
D3DVector res = new D3DVector();
D3DVector vf = new D3DVector();
for (int i = 0; i < this.mIndices.capacity(); i = i + 3) {
int a = (int) (mIndices.get(i));
int b = (int) (mIndices.get(i + 1));
int c = (int) (mIndices.get(i + 2));
v0.setFromVertice(mVertices, a);
v1.setFromVertice(mVertices, b);
v2.setFromVertice(mVertices, c);
D3DVector.sub(vm1, v1, v0);
D3DVector.sub(vm2, v2, v0);
D3DVector.cross(res, vm1, vm2);
res.normalize();
D3DVector.add(vf, v0, v1);
D3DVector.add(vf, vf, v2);
float scalar = D3DVector.dot(res, lightVector);
if (scalar > 0.0) {
faceToLight[i / 3] = true;
} else {
trianglecount++;
}
}
for (int i = 0; i < this.mIndices.capacity(); i = i + 3) {
if (faceToLight[i / 3]) {
for (int k = 0; k < 3; k++) {
int a = mIndices.get(i + k);
int b = mIndices.get(i + (k + 1) % 3);
for (int l = 0; l < this.mIndices.capacity(); l = l + 3) {
if (!faceToLight[l / 3]) {
for (int z = 0; z < 3; z++) {
int a2 = mIndices.get(l + z);
int b2 = mIndices.get(l + (z + 1) % 3);
if (((a == a2) && (b == b2)) || ((a == b2) && (b == a2))) {
trianglecount++;
trianglecount++;
}
}
}
}
}
}
}
shadowMesh.init(trianglecount);
for (int i = 0; i < this.mIndices.capacity(); i = i + 3) {
int a = (int) (mIndices.get(i));
int b = (int) (mIndices.get(i + 1));
int c = (int) (mIndices.get(i + 2));
v0.setFromVertice(mVertices, a);
v1.setFromVertice(mVertices, b);
v2.setFromVertice(mVertices, c);
D3DVector.sub(vm1, v1, v0);
D3DVector.sub(vm2, v2, v0);
D3DVector.cross(res, vm1, vm2);
res.normalize();
D3DVector.add(vf, v0, v1);
D3DVector.add(vf, vf, v2);
float scalar = D3DVector.dot(res, lightVector);
if (scalar > 0.0) {
faceToLight[i / 3] = true;
} else {
shadowMesh.putTriangle(
mVertices.get(a * nbFloatPerVertex),
mVertices.get(a * nbFloatPerVertex + 1),
mVertices.get(a * nbFloatPerVertex + 2),
mVertices.get(b * nbFloatPerVertex),
mVertices.get(b * nbFloatPerVertex + 1),
mVertices.get(b * nbFloatPerVertex + 2),
mVertices.get(c * nbFloatPerVertex),
mVertices.get(c * nbFloatPerVertex + 1),
mVertices.get(c * nbFloatPerVertex + 2));
}
}
for (int i = 0; i < this.mIndices.capacity(); i = i + 3) {
if (faceToLight[i / 3]) {
for (int k = 0; k < 3; k++) {
int a = mIndices.get(i + k);
int b = mIndices.get(i + (k + 1) % 3);
for (int l = 0; l < this.mIndices.capacity(); l = l + 3) {
if (!faceToLight[l / 3]) {
for (int z = 0; z < 3; z++) {
int a2 = mIndices.get(l + z);
int b2 = mIndices.get(l + (z + 1) % 3);
if (((a == a2) && (b == b2)) || ((a == b2) && (b == a2))) {
D3DVector lightVectP = lightVector.cpy();
lightVectP.mul(10000.f);
D3DVector vt1 = new D3DVector();
vt1.setFromVertice(mVertices, a2);
D3DVector vt1p = new D3DVector();
D3DVector.sub(vt1p, vt1, lightVectP);
D3DVector vt2 = new D3DVector();
vt2.setFromVertice(mVertices, b2);
D3DVector vt2p = new D3DVector();
D3DVector.sub(vt2p, vt2, lightVectP);
shadowMesh.putTriangle(
mVertices.get(a * nbFloatPerVertex),
mVertices.get(a * nbFloatPerVertex + 1),
mVertices.get(a * nbFloatPerVertex + 2),
mVertices.get(b * nbFloatPerVertex),
mVertices.get(b * nbFloatPerVertex + 1),
mVertices.get(b * nbFloatPerVertex + 2),
vt2p.get(0),
vt2p.get(1),
vt2p.get(2));
shadowMesh.putTriangle(
vt2p.get(0),
vt2p.get(1),
vt2p.get(2),
vt1p.get(0),
vt1p.get(1),
vt1p.get(2),
mVertices.get(a * nbFloatPerVertex),
mVertices.get(a * nbFloatPerVertex + 1),
mVertices.get(a * nbFloatPerVertex + 2));
}
}
}
}
}
}
}
shadowMesh.mVertices.position(0);
shadowMesh.mIndices.position(0);
return shadowMesh;
}
