public static void DebugDrawConstraint(TypedConstraint constraint, IDebugDraw debugDraw)
{
bool drawFrames = (debugDraw.GetDebugMode() & DebugDrawModes.DBG_DrawConstraints) != 0;
bool drawLimits = (debugDraw.GetDebugMode() & DebugDrawModes.DBG_DrawConstraintLimits) != 0;
float dbgDrawSize = constraint.GetDbgDrawSize();
if (dbgDrawSize <= 0f)
{
return;
}
switch (constraint.GetConstraintType())
{
case TypedConstraintType.POINT2POINT_CONSTRAINT_TYPE:
{
Point2PointConstraint p2pC = constraint as Point2PointConstraint;
IndexedMatrix tr = IndexedMatrix.Identity;
IndexedVector3 pivot = p2pC.GetPivotInA();
pivot = p2pC.GetRigidBodyA().GetCenterOfMassTransform() * pivot;
tr._origin = pivot;
debugDraw.DrawTransform(ref tr, dbgDrawSize);
// that ideally should draw the same frame
pivot = p2pC.GetPivotInB();
pivot = p2pC.GetRigidBodyB().GetCenterOfMassTransform() * pivot;
tr._origin = pivot;
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
}
break;
case TypedConstraintType.HINGE_CONSTRAINT_TYPE:
{
HingeConstraint pHinge = constraint as HingeConstraint;
IndexedMatrix tr = pHinge.GetRigidBodyA().GetCenterOfMassTransform() * pHinge.GetAFrame();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
tr = pHinge.GetRigidBodyB().GetCenterOfMassTransform() * pHinge.GetBFrame();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
float minAng = pHinge.GetLowerLimit();
float maxAng = pHinge.GetUpperLimit();
if (minAng == maxAng)
{
break;
}
bool drawSect = true;
if (minAng > maxAng)
{
minAng = 0f;
maxAng = MathUtil.SIMD_2_PI;
drawSect = false;
}
if (drawLimits)
{
IndexedVector3 center = tr._origin;
IndexedVector3 normal = tr._basis.GetColumn(2);
IndexedVector3 axis = tr._basis.GetColumn(0);
IndexedVector3 zero = IndexedVector3.Zero;
debugDraw.DrawArc(ref center, ref normal, ref axis, dbgDrawSize, dbgDrawSize, minAng, maxAng, ref zero, drawSect);
}
}
break;
case TypedConstraintType.CONETWIST_CONSTRAINT_TYPE:
{
ConeTwistConstraint pCT = constraint as ConeTwistConstraint;
IndexedMatrix tr = pCT.GetRigidBodyA().GetCenterOfMassTransform() * pCT.GetAFrame();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
tr = pCT.GetRigidBodyB().GetCenterOfMassTransform() * pCT.GetBFrame();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
IndexedVector3 zero = IndexedVector3.Zero;
if (drawLimits)
{
//const float length = float(5);
float length = dbgDrawSize;
const int nSegments = 8 * 4;
float fAngleInRadians = MathUtil.SIMD_2_PI * (float)(nSegments - 1) / (float)nSegments;
IndexedVector3 pPrev = pCT.GetPointForAngle(fAngleInRadians, length);
pPrev = tr * pPrev;
for (int i = 0; i < nSegments; i++)
{
fAngleInRadians = MathUtil.SIMD_2_PI * (float)i / (float)nSegments;
IndexedVector3 pCur = pCT.GetPointForAngle(fAngleInRadians, length);
pCur = tr * pCur;
debugDraw.DrawLine(ref pPrev, ref pCur, ref zero);
if (i % (nSegments / 8) == 0)
{
IndexedVector3 origin = tr._origin;
debugDraw.DrawLine(ref origin, ref pCur, ref zero);
}
pPrev = pCur;
}
float tws = pCT.GetTwistSpan();
float twa = pCT.GetTwistAngle();
bool useFrameB = (pCT.GetRigidBodyB().GetInvMass() > 0f);
if (useFrameB)
{
tr = pCT.GetRigidBodyB().GetCenterOfMassTransform() * pCT.GetBFrame();
}
else
{
tr = pCT.GetRigidBodyA().GetCenterOfMassTransform() * pCT.GetAFrame();
}
IndexedVector3 pivot = tr._origin;
IndexedVector3 normal = tr._basis.GetColumn(0);
IndexedVector3 axis = tr._basis.GetColumn(1);
debugDraw.DrawArc(ref pivot, ref normal, ref axis, dbgDrawSize, dbgDrawSize, -twa - tws, -twa + tws, ref zero, true);
}
}
break;
case TypedConstraintType.D6_CONSTRAINT_TYPE:
case TypedConstraintType.D6_SPRING_CONSTRAINT_TYPE:
{
Generic6DofConstraint p6DOF = constraint as Generic6DofConstraint;
IndexedMatrix tr = p6DOF.GetCalculatedTransformA();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
tr = p6DOF.GetCalculatedTransformB();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
IndexedVector3 zero = IndexedVector3.Zero;
if (drawLimits)
{
tr = p6DOF.GetCalculatedTransformA();
IndexedVector3 center = p6DOF.GetCalculatedTransformB()._origin;
// up is axis 1 not 2 ?
IndexedVector3 up = tr._basis.GetColumn(1);
IndexedVector3 axis = tr._basis.GetColumn(0);
float minTh = p6DOF.GetRotationalLimitMotor(1).m_loLimit;
float maxTh = p6DOF.GetRotationalLimitMotor(1).m_hiLimit;
float minPs = p6DOF.GetRotationalLimitMotor(2).m_loLimit;
float maxPs = p6DOF.GetRotationalLimitMotor(2).m_hiLimit;
debugDraw.DrawSpherePatch(ref center, ref up, ref axis, dbgDrawSize * .9f, minTh, maxTh, minPs, maxPs, ref zero);
axis = tr._basis.GetColumn(1);
float ay = p6DOF.GetAngle(1);
float az = p6DOF.GetAngle(2);
float cy = (float)Math.Cos(ay);
float sy = (float)Math.Sin(ay);
float cz = (float)Math.Cos(az);
float sz = (float)Math.Sin(az);
IndexedVector3 ref1 = new IndexedVector3(
cy * cz * axis.X + cy * sz * axis.Y - sy * axis.Z,
-sz * axis.X + cz * axis.Y,
cz * sy * axis.X + sz * sy * axis.Y + cy * axis.Z);
tr = p6DOF.GetCalculatedTransformB();
IndexedVector3 normal = -tr._basis.GetColumn(0);
float minFi = p6DOF.GetRotationalLimitMotor(0).m_loLimit;
float maxFi = p6DOF.GetRotationalLimitMotor(0).m_hiLimit;
if (minFi > maxFi)
{
debugDraw.DrawArc(ref center, ref normal, ref ref1, dbgDrawSize, dbgDrawSize, -MathUtil.SIMD_PI, MathUtil.SIMD_PI, ref zero, false);
}
else if (minFi < maxFi)
{
debugDraw.DrawArc(ref center, ref normal, ref ref1, dbgDrawSize, dbgDrawSize, minFi, maxFi, ref zero, false);
}
tr = p6DOF.GetCalculatedTransformA();
IndexedVector3 bbMin = p6DOF.GetTranslationalLimitMotor().m_lowerLimit;
IndexedVector3 bbMax = p6DOF.GetTranslationalLimitMotor().m_upperLimit;
debugDraw.DrawBox(ref bbMin, ref bbMax, ref tr, ref zero);
}
}
break;
case TypedConstraintType.SLIDER_CONSTRAINT_TYPE:
{
SliderConstraint pSlider = constraint as SliderConstraint;
IndexedMatrix tr = pSlider.GetCalculatedTransformA();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
tr = pSlider.GetCalculatedTransformB();
if (drawFrames)
{
debugDraw.DrawTransform(ref tr, dbgDrawSize);
}
IndexedVector3 zero = IndexedVector3.Zero;
if (drawLimits)
{
IndexedMatrix tr2 = pSlider.GetCalculatedTransformA();
IndexedVector3 li_min = tr2 * new IndexedVector3(pSlider.GetLowerLinLimit(), 0f, 0f);
IndexedVector3 li_max = tr2 * new IndexedVector3(pSlider.GetUpperLinLimit(), 0f, 0f);
debugDraw.DrawLine(ref li_min, ref li_max, ref zero);
IndexedVector3 normal = tr._basis.GetColumn(0);
IndexedVector3 axis = tr._basis.GetColumn(1);
float a_min = pSlider.GetLowerAngLimit();
float a_max = pSlider.GetUpperAngLimit();
IndexedVector3 center = pSlider.GetCalculatedTransformB()._origin;
debugDraw.DrawArc(ref center, ref normal, ref axis, dbgDrawSize, dbgDrawSize, a_min, a_max, ref zero, true);
}
}
break;
default:
break;
}
return;
}