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Math.vala updated #2

This commit is contained in:
Kolan Sh 2018-01-10 15:34:45 +03:00
parent 912446f296
commit 3a57fdfde1
2 changed files with 52 additions and 51 deletions
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56
src/Chart.vala
View File

@ -722,58 +722,20 @@ namespace CairoChart {
return Point (get_real_x(s, p.x), get_real_y(s, p.y)); return Point (get_real_x(s, p.x), get_real_y(s, p.y));
} }
protected virtual bool x_in_range (double x, double x0, double x1) {
if (x0 <= x <= x1 || x1 <= x <= x0)
return true;
return false;
}
protected virtual bool y_in_range (double y, double y0, double y1) {
if (y0 <= y <= y1 || y1 <= y <= y0)
return true;
return false;
}
protected virtual bool x_in_plot_area (double x) { protected virtual bool x_in_plot_area (double x) {
if (x_in_range(x, plot_x_min, plot_x_max)) if (math.x_in_range(x, plot_x_min, plot_x_max))
return true; return true;
return false; return false;
} }
protected virtual bool y_in_plot_area (double y) { protected virtual bool y_in_plot_area (double y) {
if (y_in_range(y, plot_y_min, plot_y_max)) if (math.y_in_range(y, plot_y_min, plot_y_max))
return true;
return false;
}
protected virtual bool point_in_rect (Point p, double x0, double x1, double y0, double y1) {
if (x_in_range(p.x, x0, x1) && y_in_range(p.y, y0, y1))
return true; return true;
return false; return false;
} }
protected virtual bool point_in_plot_area (Point p) { protected virtual bool point_in_plot_area (Point p) {
if (point_in_rect (p, plot_x_min, plot_x_max, plot_y_min, plot_y_max)) if (math.point_in_rect (p, plot_x_min, plot_x_max, plot_y_min, plot_y_max))
return true;
return false;
}
protected virtual bool hcross (Point a1, Point a2, Float128 h_x1, Float128 h_x2, Float128 h_y, out Float128 x) {
x = 0;
if (a1.y == a2.y) return false;
if (a1.y >= h_y && a2.y >= h_y || a1.y <= h_y && a2.y <= h_y) return false;
x = a1.x + (a2.x - a1.x) * (h_y - a1.y) / (a2.y - a1.y);
if (h_x1 <= x <= h_x2 || h_x2 <= x <= h_x1)
return true;
return false;
}
protected virtual bool vcross (Point a1, Point a2, Float128 v_x, Float128 v_y1, Float128 v_y2, out Float128 y) {
y = 0;
if (a1.x == a2.x) return false;
if (a1.x >= v_x && a2.x >= v_x || a1.x <= v_x && a2.x <= v_x) return false;
y = a1.y + (a2.y - a1.y) * (v_x - a1.x) / (a2.x - a1.x);
if (v_y1 <= y <= v_y2 || v_y2 <= y <= v_y1)
return true; return true;
return false; return false;
} }
@ -795,13 +757,13 @@ namespace CairoChart {
int ncross = 0; int ncross = 0;
Float128 x = 0, y = 0; Float128 x = 0, y = 0;
Point pc[4]; Point pc[4];
if (hcross(a, b, plot_x_min, plot_x_max, plot_y_min, out x)) if (math.hcross(a, b, plot_x_min, plot_x_max, plot_y_min, out x))
pc[ncross++] = Point(x, plot_y_min); pc[ncross++] = Point(x, plot_y_min);
if (hcross(a, b, plot_x_min, plot_x_max, plot_y_max, out x)) if (math.hcross(a, b, plot_x_min, plot_x_max, plot_y_max, out x))
pc[ncross++] = Point(x, plot_y_max); pc[ncross++] = Point(x, plot_y_max);
if (vcross(a, b, plot_x_min, plot_y_min, plot_y_max, out y)) if (math.vcross(a, b, plot_x_min, plot_y_min, plot_y_max, out y))
pc[ncross++] = Point(plot_x_min, y); pc[ncross++] = Point(plot_x_min, y);
if (vcross(a, b, plot_x_max, plot_y_min, plot_y_max, out y)) if (math.vcross(a, b, plot_x_max, plot_y_min, plot_y_max, out y))
pc[ncross++] = Point(plot_x_max, y); pc[ncross++] = Point(plot_x_max, y);
c = a; c = a;
d = b; d = b;
@ -998,7 +960,7 @@ namespace CairoChart {
switch (cursor_style.orientation) { switch (cursor_style.orientation) {
case Cursor.Orientation.VERTICAL: case Cursor.Orientation.VERTICAL:
Float128 y = 0.0; Float128 y = 0.0;
if (vcross(get_scr_point(s, points[i]), get_scr_point(s, points[i+1]), rel2scr_x(c.x), if (math.vcross(get_scr_point(s, points[i]), get_scr_point(s, points[i+1]), rel2scr_x(c.x),
plot_y_min, plot_y_max, out y)) { plot_y_min, plot_y_max, out y)) {
var point = Point(get_real_x(s, rel2scr_x(c.x)), get_real_y(s, y)); var point = Point(get_real_x(s, rel2scr_x(c.x)), get_real_y(s, y));
Point size; bool show_x, show_date, show_time, show_y; Point size; bool show_x, show_date, show_time, show_y;
@ -1010,7 +972,7 @@ namespace CairoChart {
break; break;
case Cursor.Orientation.HORIZONTAL: case Cursor.Orientation.HORIZONTAL:
Float128 x = 0.0; Float128 x = 0.0;
if (hcross(get_scr_point(s, points[i]), get_scr_point(s, points[i+1]), if (math.hcross(get_scr_point(s, points[i]), get_scr_point(s, points[i+1]),
plot_x_min, plot_x_max, rel2scr_y(c.y), out x)) { plot_x_min, plot_x_max, rel2scr_y(c.y), out x)) {
var point = Point(get_real_x(s, x), get_real_y(s, rel2scr_y(c.y))); var point = Point(get_real_x(s, x), get_real_y(s, rel2scr_y(c.y)));
Point size; bool show_x, show_date, show_time, show_y; Point size; bool show_x, show_date, show_time, show_y;

43
src/Math.vala
View File

@ -21,19 +21,58 @@ namespace CairoChart {
return step; return step;
} }
public bool are_intersect (double a_min, double a_max, double b_min, double b_max) { public virtual bool are_intersect (double a_min, double a_max, double b_min, double b_max) {
if ( a_min < a_max <= b_min < b_max if ( a_min < a_max <= b_min < b_max
|| b_min < b_max <= a_min < a_max) || b_min < b_max <= a_min < a_max)
return false; return false;
return true; return true;
} }
public bool point_belong (Float128 p, Float128 a, Float128 b) { public virtual bool point_belong (Float128 p, Float128 a, Float128 b) {
if (a > b) { Float128 tmp = a; a = b; b = tmp; } if (a > b) { Float128 tmp = a; a = b; b = tmp; }
if (a <= p <= b) return true; if (a <= p <= b) return true;
return false; return false;
} }
public virtual bool x_in_range (double x, double x0, double x1) {
if (x0 <= x <= x1 || x1 <= x <= x0)
return true;
return false;
}
public virtual bool y_in_range (double y, double y0, double y1) {
if (y0 <= y <= y1 || y1 <= y <= y0)
return true;
return false;
}
public virtual bool point_in_rect (Point p, double x0, double x1, double y0, double y1) {
if (x_in_range(p.x, x0, x1) && y_in_range(p.y, y0, y1))
return true;
return false;
}
public virtual bool hcross (Point a1, Point a2, Float128 h_x1, Float128 h_x2, Float128 h_y, out Float128 x) {
x = 0;
if (a1.y == a2.y) return false;
if (a1.y >= h_y && a2.y >= h_y || a1.y <= h_y && a2.y <= h_y) return false;
x = a1.x + (a2.x - a1.x) * (h_y - a1.y) / (a2.y - a1.y);
if (h_x1 <= x <= h_x2 || h_x2 <= x <= h_x1)
return true;
return false;
}
public virtual bool vcross (Point a1, Point a2, Float128 v_x, Float128 v_y1, Float128 v_y2, out Float128 y) {
y = 0;
if (a1.x == a2.x) return false;
if (a1.x >= v_x && a2.x >= v_x || a1.x <= v_x && a2.x <= v_x) return false;
y = a1.y + (a2.y - a1.y) * (v_x - a1.x) / (a2.x - a1.x);
if (v_y1 <= y <= v_y2 || v_y2 <= y <= v_y1)
return true;
return false;
}
public Math () {} public Math () {}
} }
} }