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#ifndef CURVE_H
#define CURVE_H
#include <QtCore/QPointF>
#include <QtGui/QColor>
#include <vector>
#include "Common.h"
namespace nvidia {
namespace CurveEditor {
enum InterpolateMode
{
eDiscret,
eLinear,
eBezierSpline,
eCatmullRomSpline,
};
struct BezierSplineData
{
float inTan;
float inLen;
float outTan;
float outLen;
};
struct ControlPoint
{
ControlPoint()
: value(0, 0)
, mode (eDiscret)
{
memset( &splineData, 0, sizeof(BezierSplineData));
}
ControlPoint(float inX, float inY, InterpolateMode inMode)
: value(inX, inY)
, mode(inMode)
{
memset( &splineData, 0, sizeof(BezierSplineData));
}
ControlPoint(float inX, float inY, InterpolateMode inMode, BezierSplineData& inSplineData)
: value(inX, inY)
, mode(inMode)
, splineData(inSplineData)
{
}
QPointF value;
InterpolateMode mode;
BezierSplineData splineData;
};
class CURVEEDITOR_EXPORT Curve
{
friend class CurveWidget;
friend class CurveEntity;
public:
Curve(long segmentCount = 100);
void initValueRange(const QPointF& min, const QPointF& max);
QPointF getMinValue();
QPointF getMaxValue();
int getControlPointCount() { return (int) _controlPoints.size(); }
const ControlPoint& getControlPoint(int index) { return _controlPoints[index]; }
void appendControlPoint(ControlPoint& controlPoint, bool asDefaultToo = true);
int appendControlPoint(float x);
void setControlPoint(int index, const ControlPoint& point);
void reset(void);
void insertControlPointAt(int index);
void removeControlPoint(int index);
void removeControlPoints(std::vector<int>& indexes);
QPointF getPointByX(float x);
std::vector<QPointF> getSamplePoints();
Curve resampleCurve(int resamplePnts, long segmentCount = 100);
Curve& operator = (const Curve& right);
private:
void _sample();
ControlPoint& _getNearCtrlPnt(float x);
private:
bool _needSample;
bool _initValueRange;
QPointF _minValue;
QPointF _maxValue;
long _segmentCount;
std::vector<QPointF> _samplePoints;
std::vector<ControlPoint> _controlPoints;
std::vector<ControlPoint> _defaultControlPoints;
};
struct ColorControlPoint
{
ColorControlPoint()
: x(0.0)
, color()
, mode (eDiscret)
, weight(0.5f)
, fallOff(0.5f)
, texturePath()
{
memset( &splineData, 0, sizeof(BezierSplineData));
}
ColorControlPoint(float inX, const QColor& inColor, InterpolateMode inMode, float inWeight = 0.5f, float inFallOff = 0.5f)
: x(inX)
, color(inColor)
, mode(inMode)
, weight(inWeight)
, fallOff(inFallOff)
, texturePath()
{
memset( &splineData, 0, sizeof(BezierSplineData));
}
ColorControlPoint(float inX, const QColor& inColor, InterpolateMode inMode, const BezierSplineData& inSplineData, float inWeight = 0.5f, float inFallOff = 0.5f)
: x(inX)
, color(inColor)
, mode(inMode)
, splineData(inSplineData)
, weight(inWeight)
, fallOff(inFallOff)
, texturePath()
{
}
float x;
QColor color;
InterpolateMode mode;
BezierSplineData splineData;
float weight; // if it's less than 0, the segememnt between this control point and next control point won't use weight algorithm
float fallOff;
std::string texturePath;
QColor textureAverageColor;
};
struct ColorPoint
{
ColorPoint()
: x(0.0)
, color()
{
}
ColorPoint(float inX, const QColor& inColor)
: x(inX)
, color(inColor)
{
}
float x;
QColor color;
};
class ColorWidget;
class CURVEEDITOR_EXPORT ColorCurve
{
friend class ColorWidget;
public:
ColorCurve(long segmentCount = 100);
void initValueRange(float min, float max);
float getMinValue();
float getMaxValue();
int getControlPointCount() { return (int) _controlPoints.size(); }
const ColorControlPoint& getControlPoint(int index) { return _controlPoints[index]; }
void appendControlPoint(ColorControlPoint& controlPoint, bool asDefaultToo = true);
void setControlPoint(int index, const ColorControlPoint& point);
void reset(void);
void insertControlPointAt(int index);
void removeControlPoint(int index);
QColor getColorByX(float x);
ColorCurve& operator = (const ColorCurve& right);
private:
void _doSamplePoints();
void _reOrderControlPoints(int& pickedPoint);
QColor _calcTextureAverageColor(const char* texturePath);
private:
bool _needSample;
bool _initValueRange;
float _minValue;
float _maxValue;
long _segmentCount;
std::vector<ColorPoint> _colorSamplePnts;
std::vector<ColorControlPoint> _controlPoints;
std::vector<ColorControlPoint> _defaultControlPoints;
};
} // namespace CurveEditor
} // namespace nvidia
#endif // CURVE_H
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