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Cairo-Chart
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Kolan Sh 2018-01-19 13:45:21 +03:00
parent 0a1ccba521
commit a2ed8e2e25
2 changed files with 8 additions and 3 deletions
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7
src/Math.vala
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@ -21,13 +21,18 @@ namespace CairoChart {
return step;
}
internal bool are_intersect (double a_min, double a_max, double b_min, double b_max) {
internal bool coord_cross (double a_min, double a_max, double b_min, double b_max) {
if ( a_min < a_max <= b_min < b_max
|| b_min < b_max <= a_min < a_max)
return false;
return true;
}
internal bool rect_cross (Cairo.Rectangle r1, Cairo.Rectangle r2) {
return coord_cross(r1.x, r1.x + r1.width, r2.x, r2.x + r2.width)
&& coord_cross(r1.y, r1.y + r1.height, r2.y, r2.y + r2.height);
}
internal bool point_belong (Float128 p, Float128 a, Float128 b) {
if (a > b) { Float128 tmp = a; a = b; b = tmp; }
if (a <= p <= b) return true;

4
src/Series.vala
View File

@ -188,7 +188,7 @@ namespace CairoChart {
for (int sk = si; sk > sj; --sk) {
var s3 = chart.series[sk];
if (!s3.zoom_show) continue;
if (Math.are_intersect(s2.place.zoom_x_min, s2.place.zoom_x_max, s3.place.zoom_x_min, s3.place.zoom_x_max)
if (Math.coord_cross(s2.place.zoom_x_min, s2.place.zoom_x_max, s3.place.zoom_x_min, s3.place.zoom_x_max)
|| s2.axis_x.position != s3.axis_x.position
|| s2.axis_x.type != s3.axis_x.type) {
has_intersection = true;
@ -226,7 +226,7 @@ namespace CairoChart {
for (int sk = si; sk > sj; --sk) {
var s3 = chart.series[sk];
if (!s3.zoom_show) continue;
if (Math.are_intersect(s2.place.zoom_y_min, s2.place.zoom_y_max, s3.place.zoom_y_min, s3.place.zoom_y_max)
if (Math.coord_cross(s2.place.zoom_y_min, s2.place.zoom_y_max, s3.place.zoom_y_min, s3.place.zoom_y_max)
|| s2.axis_y.position != s3.axis_y.position
|| s2.axis_y.type != s3.axis_y.type) {
has_intersection = true;