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| UI_EXP void | UtilsMath::ComputeAxis (double *axis_min, double *axis_max, double *step_unit, double y_min, double y_max, int tick_count=5, double padding_ratio=0.05, int round_flag=1) |
| | 根据输入的范围，获得最恰当的坐标轴边界
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| UI_EXP void | UtilsMath::LinearFit (VecFloat2 *points, int len, double &k, double &b) |
| | 线性拟合-最小二乘法。拟合结果为 y= k * x + b
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| UI_EXP void | UtilsMath::LinearFitExp (VecFloat2 *points, int len, double &a, double &b) |
| | 非线性拟合指数函数-最小二乘法。拟合结果为 y= a * b^x
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| UI_EXP void | UtilsMath::LinearFitPower (VecFloat2 *points, int len, double &a, double &b) |
| | 非线性拟合幂函数-最小二乘法。拟合结果为 y= a * x^b
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| UI_EXP double | UtilsMath::InterpolationLagrange (VecFloat2 *points, int len, double xp) |
| | 拉格朗日插值，求任意点xp的Y坐标
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| UI_EXP BOOL | UtilsMath::PtInLine (POINT pt, POINT p1, POINT p2, int distance) |
| | 判断点是否在线段上
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| UI_EXP BOOL | UtilsMath::PtInRegion (POINT pt, std::vector< POINT > &points) |
| | 判断点是否在points点围成的区域内
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| UI_EXP BOOL | UtilsMath::PtInRegion (POINT pt, const POINT points[], int len) |
| UI_EXP BOOL | UtilsMath::LineCrossPoint (POINT line1_p1, POINT line1_p2, POINT line2_p1, POINT line2_p2, POINT &pt_cross) |
| | 线段在各自延长线上存在交点
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| UI_EXP BOOL | UtilsMath::LineCrossPointInside (POINT line1_p1, POINT line1_p2, POINT line2_p1, POINT line2_p2, POINT &pt_cross) |
| | 线段上的交点，不包括各自延长线
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| UI_EXP void | UtilsMath::RectLayoutCalculator (LayoutPosition *objs, int len, RECT rc_box, UINT align, BOOL is_horz, int interval, BOOL is_reverse) |
| | 根据尺寸列表，计算在区域中的位置
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| UI_EXP void | UtilsMath::TrianglePoint (POINT pt[], RECT rect, int dir, int size) |
| | 三角形顶点源
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| UI_EXP BOOL | UtilsMath::IsSameSign (double v1, double v2) |
| | 同号
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| UI_EXP double | UtilsMath::VectorAngle (double x1, double y1, double x2, double y2) |
| | 向量基于x轴的夹角
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| UI_EXP BOOL | UtilsRect::PointInRect (const RECT *rc, POINT pt) |
| | 点是否在矩形区域内
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| UI_EXP BOOL | UtilsRect::PointInRect (const RECT *rc, LONG x, LONG y) |
| | 点是否在矩形区域内
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| UI_EXP void | UtilsRect::SetRectEmpty (RECT *rc) |
| | 设置矩形为空（0,0,0,0）
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| UI_EXP void | UtilsRect::SetRect (RECT *rc, int l, int t, int r, int b) |
| | 设置矩形尺寸
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| UI_EXP BOOL | UtilsRect::IsRectangleEmpty (const RECT *rc) |
| UI_EXP BOOL | UtilsRect::IsRectIntersect (LPRECT rc1, LPRECT rc2) |
| | lprc1与lprc2矩形，是否有交集
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| UI_EXP BOOL | UtilsRect::IntersectRectangle (LPRECT rc_out, const RECT *rc1, const RECT *rc2) |
| | 求rc1与rc2矩形交集
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| UI_EXP BOOL | UtilsRect::UnionRectangle (LPRECT rc_out, const RECT *rc1, const RECT *rc2) |
| | 求rc1与rc2矩形并集
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| UI_EXP BOOL | UtilsRect::IsRectContain (LPRECT rc1, LPRECT rc2) |
| | 矩形(rc1)内是否包含矩形(rc2)
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| UI_EXP BOOL | UtilsRect::IsRectEqual (LPRECT rc1, LPRECT rc2) |
| | 矩形(rc1)与矩形(rc2)，是否相等
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| UI_EXP BOOL | UtilsRect::DeflateRect (LPRECT rc, int l, int t, int r, int b) |
| | 矩形(rc)，边距缩小或放大
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| UI_EXP BOOL | UtilsRect::DeflateRect (LPRECT rc, int dx, int dy, BOOL check_min=FALSE) |
| | 矩形(rc)，边距缩小或放大
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| UI_EXP BOOL | UtilsRect::OffsetRect (LPRECT rc, int dx, int dy) |
| | 矩形(rc)平移
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| UI_EXP void | UtilsRect::Normal (RECT &rc) |
| | 矩形(rc)坐标标准化(左边必须小于右边，底部大于顶部)
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| UI_EXP void | UtilsRect::TransformRect (RECT &rc, BUI::Transform2d &mtx) |
| | 根据变换矩阵mtx，变换矩形位置
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1.14.0 