//----------------------------------------------------------------------------
Polysegment* BSplineFitContinuous::ReducedPolysegment (int numCtrlPoints,
Vector3d* ctrlPoints, double fraction)
{
int numLSCtrlPoints;
Vector3d* lsCtrlPoints;
BSplineReduction3d(numCtrlPoints, ctrlPoints, mDegree, fraction,
numLSCtrlPoints, lsCtrlPoints);
BSplineCurve3d spline(numLSCtrlPoints, lsCtrlPoints, mDegree, false,
true);
delete1(lsCtrlPoints);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numCtrlPoints, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
Float3 blue(0.0f, 0.0f, 1.0f);
for (int i = 0; i < numCtrlPoints; ++i)
{
double t = i/(double)numCtrlPoints;
Vector3d pos = spline.GetPosition(t);
vba.Position<Float3>(i) = Float3((float)pos[0], (float)pos[1],
(float)pos[2]);
vba.Color<Float3>(0, i) = blue;
}
Polysegment* segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
return segment;
}
//----------------------------------------------------------------------------
void Polysegments::CreateScene ()
{
mScene = new0 Node();
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(128, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Position<Float3>(i) = Float3(Mathf::SymmetricRandom(),
Mathf::SymmetricRandom(), Mathf::SymmetricRandom());
vba.Color<Float3>(0, i) = Float3(Mathf::UnitRandom(),
Mathf::UnitRandom(), Mathf::UnitRandom());
}
mPolysegment = new0 Polysegment(vformat, vbuffer, true);
mPolysegment->SetEffectInstance(
VertexColor3Effect::CreateUniqueInstance());
mScene->AttachChild(mPolysegment);
}
//----------------------------------------------------------------------------
Polysegment* PolyhedronDistance::CreateSegment ()
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(2, vstride);
VertexBufferAccessor vba(vformat, vbuffer);
vba.Position<Vector3f>(0) = Vector3f::ZERO;
vba.Position<Vector3f>(1) = Vector3f::UNIT_X;
vba.Color<Float3>(0, 0) = Float3(1.0f, 1.0f, 1.0f);
vba.Color<Float3>(0, 1) = Float3(1.0f, 1.0f, 1.0f);
Polysegment* segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
return segment;
}
//----------------------------------------------------------------------------
void IntersectInfiniteCylinders::CreateScene ()
{
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
StandardMesh sm(vformat);
VertexBufferAccessor vba;
int i;
// Create the canonical cylinder.
mCylinder0 = sm.Cylinder(32, 128, mRadius0, mHeight, true);
mScene->AttachChild(mCylinder0);
mVisible.Insert(mCylinder0);
vba.ApplyTo(mCylinder0);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Color<Float3>(0, i) = Float3(0.5f, 0.0f, 0.0f);
}
mCylinder0->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
// Create the other cylinder.
mCylinder1 = sm.Cylinder(32, 128, mRadius1, mHeight, true);
mScene->AttachChild(mCylinder1);
mVisible.Insert(mCylinder1);
vba.ApplyTo(mCylinder1);
for (i = 0; i < vba.GetNumVertices(); ++i)
{
vba.Color<Float3>(0, i) = Float3(0.0f, 0.0f, 0.5f);
}
mCylinder1->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
mCylinder1->LocalTransform.SetRotate(HMatrix(AVector::UNIT_X, -mAngle));
mCylinder1->LocalTransform.SetTranslate(APoint(mC0, 0.0f, 0.0f));
// Create the intersection curve.
const float minTheta = 2.0f*Mathf::PI/3.0f;
const float maxTheta = 4.0f*Mathf::PI/3.0f;
float theta, cs, sn, t, tmp, discr;
VertexBuffer* vbuffer = new0 VertexBuffer(1024, vstride);
mCurve0 = new0 Polysegment(vformat, vbuffer, true);
mScene->AttachChild(mCurve0);
vba.ApplyTo(mCurve0);
int numPoints = vba.GetNumVertices();
float multiplier = (maxTheta - minTheta)/(float)(numPoints - 1);
for (i = 0; i < numPoints; ++i)
{
theta = minTheta + multiplier*i;
cs = Mathf::Cos(theta);
sn = Mathf::Sin(theta);
tmp = mC0 + mRadius1*cs;
discr = Mathf::FAbs(mRadius0*mRadius0 - tmp*tmp);
t = (-mRadius1*mW2*sn - Mathf::Sqrt(discr))/mW1;
Float3& position = vba.Position<Float3>(i);
position[0] = mC0 + mRadius1*cs;
position[1] = +mRadius1*sn*mW2 + t*mW1;
position[2] = -mRadius1*sn*mW1 + t*mW2;
vba.Color<Float3>(0, i) = Float3(0.0f, 0.5f, 0.0f);
}
mCurve0->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
mVisible.Insert(mCurve0);
vbuffer = new0 VertexBuffer(1024, vstride);
mCurve1 = new0 Polysegment(vformat, vbuffer, true);
mScene->AttachChild(mCurve1);
vba.ApplyTo(mCurve1);
numPoints = vba.GetNumVertices();
multiplier = (maxTheta - minTheta)/(float)(numPoints - 1);
for (i = 0; i < numPoints; ++i)
{
theta = minTheta + multiplier*i;
cs = Mathf::Cos(theta);
sn = Mathf::Sin(theta);
tmp = mC0 + mRadius1*cs;
discr = Mathf::FAbs(mRadius0*mRadius0 - tmp*tmp);
t = (-mRadius1*mW2*sn + Mathf::Sqrt(discr))/mW1;
Float3& position = vba.Position<Float3>(i);
position[0] = mC0 + mRadius1*cs;
position[1] = +mRadius1*sn*mW2 + t*mW1;
position[2] = -mRadius1*sn*mW1 + t*mW2;
vba.Color<Float3>(0, i) = Float3(0.0f, 0.5f, 0.0f);
}
mCurve1->SetEffectInstance(VertexColor3Effect::CreateUniqueInstance());
mVisible.Insert(mCurve1);
}
//----------------------------------------------------------------------------
void FreeFormDeformation::CreatePolylines ()
{
// Generate the polylines that connect adjacent control points.
mPolysegmentRoot = new0 Node();
mTrnNode->AttachChild(mPolysegmentRoot);
VertexColor3Effect* effect = new0 VertexColor3Effect();
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
VertexBufferAccessor vba;
VertexBuffer* vbuffer;
Polysegment* segment;
int i0, i1, i2;
for (i0 = 0; i0 < mQuantity; ++i0)
{
for (i1 = 0; i1 < mQuantity; ++i1)
{
for (i2 = 0; i2 < mQuantity-1; ++i2)
{
vbuffer = new0 VertexBuffer(2, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Vector3f>(0) =
mVolume->GetControlPoint(i0, i1, i2);
vba.Position<Vector3f>(1) =
mVolume->GetControlPoint(i0, i1, i2+1);
vba.Color<Float3>(0, 0) = Float3(0.0f, 0.0f, 0.75f);
vba.Color<Float3>(0, 1) = Float3(0.0f, 0.0f, 0.75f);
segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(effect->CreateInstance());
mPolysegmentRoot->AttachChild(segment);
}
}
for (i2 = 0; i2 < mQuantity; ++i2)
{
for (i1 = 0; i1 < mQuantity-1; ++i1)
{
vbuffer = new0 VertexBuffer(2, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Vector3f>(0) =
mVolume->GetControlPoint(i0, i1, i2);
vba.Position<Vector3f>(1) =
mVolume->GetControlPoint(i0, i1+1, i2);
vba.Color<Float3>(0, 0) = Float3(0.0f, 0.75f, 0.0f);
vba.Color<Float3>(0, 1) = Float3(0.0f, 0.75f, 0.0f);
segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(effect->CreateInstance());
mPolysegmentRoot->AttachChild(segment);
}
}
}
for (i0 = 0; i0 < mQuantity-1; ++i0)
{
for (i1 = 0; i1 < mQuantity; ++i1)
{
for (i2 = 0; i2 < mQuantity; ++i2)
{
vbuffer = new0 VertexBuffer(2, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Vector3f>(0) =
mVolume->GetControlPoint(i0, i1, i2);
vba.Position<Vector3f>(1) =
mVolume->GetControlPoint(i0+1, i1, i2);
vba.Color<Float3>(0,0) = Float3(0.75f, 0.0f, 0.0f);
vba.Color<Float3>(0,1) = Float3(0.75f, 0.0f, 0.0f);
segment = new0 Polysegment(vformat, vbuffer, true);
segment->SetEffectInstance(effect->CreateInstance());
mPolysegmentRoot->AttachChild(segment);
}
}
}
}
