Splines.
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#include <ignition/math/Spline.hh>
ignition::math::Spline::Spline |
( |
| ) |
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ignition::math::Spline::~Spline |
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void ignition::math::Spline::AddPoint |
( |
const Vector3d & |
_pt | ) |
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Adds a control point to the end of the spline.
- Parameters
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void ignition::math::Spline::AutoCalculate |
( |
bool |
_autoCalc | ) |
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Tells the spline whether it should automatically calculate tangents on demand as points are added.
- Parameters
-
[in] | _autoCalc | If true, tangents are calculated for you whenever a point changes. If false, you must call reclacTangents to recalculate them when it best suits. |
void ignition::math::Spline::Clear |
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| ) |
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Clears all the points in the spline.
Vector3d ignition::math::Spline::Interpolate |
( |
double |
_t | ) |
const |
Returns an interpolated point based on a parametric value over the whole series.
- Parameters
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[in] | _t | parameter (range 0 to 1) |
Vector3d ignition::math::Spline::Interpolate |
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unsigned int |
_fromIndex, |
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double |
_t |
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) |
| const |
Interpolates a single segment of the spline given a parametric value.
- Parameters
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[in] | _fromIndex | The point index to treat as t = 0. fromIndex + 1 is deemed to be t = 1 |
[in] | _t | Parametric value |
- Exceptions
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Vector3d ignition::math::Spline::Point |
( |
unsigned int |
_index | ) |
const |
Gets the detail of one of the control points of the spline.
- Parameters
-
[in] | _index | the control point index |
- Returns
- the control point, or [0,0,0] and a message on the error stream
- Exceptions
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unsigned int ignition::math::Spline::PointCount |
( |
| ) |
const |
Gets the number of control points in the spline.
- Returns
- the count
void ignition::math::Spline::RecalcTangents |
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Recalculates the tangents associated with this spline.
Vector3d ignition::math::Spline::Tangent |
( |
unsigned int |
_index | ) |
const |
Get the tangent value for a point.
- Parameters
-
[in] | _index | the control point index |
- Exceptions
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void ignition::math::Spline::Tension |
( |
double |
_t | ) |
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Set the tension parameter.
A value of 0 = Catmull-Rom spline.
- Parameters
-
[in] | _t | Tension value between 0.0 and 1.0 |
double ignition::math::Spline::Tension |
( |
| ) |
const |
Get the tension value.
- Returns
- The value of the tension, which is between 0.0 and 1.0
void ignition::math::Spline::UpdatePoint |
( |
unsigned int |
_index, |
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const Vector3d & |
_value |
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) |
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Updates a single point in the spline.
- Parameters
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[in] | _index | the control point index |
[in] | _value | the new position |
- Exceptions
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bool ignition::math::Spline::autoCalc |
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protected |
when true, the tangents are recalculated when the control point change
std::vector<Vector3d> ignition::math::Spline::points |
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protected |
std::vector<Vector3d> ignition::math::Spline::tangents |
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protected |
double ignition::math::Spline::tension |
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protected |
Tension of 0 = Catmull-Rom spline, otherwise a Cardinal spline.
The documentation for this class was generated from the following file: