571 lines
22 KiB
Vala
571 lines
22 KiB
Vala
using Cairo;
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namespace CairoChart {
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public class Series {
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public Point128[] points = {};
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public enum Sort {
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BY_X = 0,
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BY_Y = 1,
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UNSORTED
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}
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public Sort sort = Sort.BY_X;
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public Axis axis_x = new Axis();
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public Axis axis_y = new Axis();
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public Place place = new Place();
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public Text title = new Text ();
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public Marker marker = new Marker ();
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public Grid grid = new Grid ();
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public Line.Style line_style = Line.Style ();
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protected Color _color = Color (0.0, 0.0, 0.0, 1.0);
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public Color color {
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get { return _color; }
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set {
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_color = value;
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line_style.color = _color;
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axis_x.color = _color;
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axis_y.color = _color;
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grid.color = _color;
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grid.color.alpha = 0.5;
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grid.line_style.color = _color;
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grid.line_style.color.alpha = 0.5;
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}
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default = Color (0.0, 0.0, 0.0, 1.0);
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}
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public bool zoom_show = true;
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protected Chart chart { get; protected set; default = null; }
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public Series (Chart chart) {
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this.chart = chart;
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}
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public virtual Series copy () {
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var series = new Series (chart);
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series._color = this._color;
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series.axis_x = this.axis_x.copy ();
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series.axis_y = this.axis_y.copy ();
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series.grid = this.grid.copy ();
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series.line_style = this.line_style;
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series.marker = this.marker;
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series.place = this.place.copy();
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series.points = this.points;
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series.sort = this.sort;
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series.title = this.title.copy();
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series.zoom_show = this.zoom_show;
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return series;
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}
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public virtual void draw () {
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var points = chart.math.sort_points(this, sort);
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line_style.set(chart);
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// draw series line
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for (int i = 1; i < points.length; ++i) {
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Point c, d;
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if (chart.math.cut_line (
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Point(chart.plarea.x, chart.plarea.y),
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Point(chart.plarea.x + chart.plarea.width, chart.plarea.y + chart.plarea.height),
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Point(get_scr_x(points[i - 1].x), get_scr_y(points[i - 1].y)),
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Point(get_scr_x(points[i].x), get_scr_y(points[i].y)),
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out c, out d)
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) {
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chart.ctx.move_to (c.x, c.y);
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chart.ctx.line_to (d.x, d.y);
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}
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}
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chart.ctx.stroke();
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for (int i = 0; i < points.length; ++i) {
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var x = get_scr_x(points[i].x);
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var y = get_scr_y(points[i].y);
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if (chart.point_in_plot_area (Point (x, y)))
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marker.draw_at_pos(chart, x, y);
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}
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}
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public virtual bool equal_x_axis (Series s) {
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if ( axis_x.position != s.axis_x.position
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|| axis_x.zoom_min != s.axis_x.zoom_min
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|| axis_x.zoom_max != s.axis_x.zoom_max
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|| place.zoom_x_min != s.place.zoom_x_min
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|| place.zoom_x_max != s.place.zoom_x_max
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|| axis_x.type != s.axis_x.type
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)
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return false;
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return true;
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}
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public virtual bool equal_y_axis (Series s) {
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if ( axis_y.position != s.axis_y.position
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|| axis_y.zoom_min != s.axis_y.zoom_min
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|| axis_y.zoom_max != s.axis_y.zoom_max
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|| place.zoom_y_min != s.place.zoom_y_min
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|| place.zoom_y_max != s.place.zoom_y_max
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|| axis_y.type != s.axis_y.type
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)
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return false;
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return true;
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}
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public virtual void join_calc (bool is_x, int si, ref int nskip) {
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var s = chart.series[si];
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Axis axis = s.axis_x;
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if (!is_x) axis = s.axis_y;
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if (!s.zoom_show) return;
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if (nskip != 0) {--nskip; return;}
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double max_rec_width = 0; double max_rec_height = 0;
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axis.calc_rec_sizes (chart, out max_rec_width, out max_rec_height, is_x);
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var max_font_indent = axis.font_indent;
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var max_axis_font_width = axis.title.text == "" ? 0 : axis.title.get_width(chart.ctx) + axis.font_indent;
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var max_axis_font_height = axis.title.text == "" ? 0 : axis.title.get_height(chart.ctx) + axis.font_indent;
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if (is_x)
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s.join_relative_x_axes (si, true, ref max_rec_width, ref max_rec_height, ref max_font_indent, ref max_axis_font_height, ref nskip);
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else
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s.join_relative_y_axes (si, true, ref max_rec_width, ref max_rec_height, ref max_font_indent, ref max_axis_font_width, ref nskip);
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// for 4.2. Cursor values for joint X axis
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if (si == chart.zoom_1st_idx && chart.cursors.cursors_crossings.length != 0) {
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switch (chart.cursors.cursor_style.orientation) {
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case Cursors.Orientation.VERTICAL:
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if (is_x && chart.joint_x)
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switch (axis.position) {
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case Axis.Position.LOW: chart.plarea.height -= max_rec_height + axis.font_indent; break;
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case Axis.Position.HIGH:
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var tmp = max_rec_height + axis.font_indent;
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chart.plarea.y += tmp; chart.plarea.height -= tmp;
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break;
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}
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break;
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case Cursors.Orientation.HORIZONTAL:
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if (!is_x && chart.joint_y)
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switch (s.axis_y.position) {
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case Axis.Position.LOW:
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var tmp = max_rec_width + s.axis_y.font_indent;
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chart.plarea.x += tmp; chart.plarea.width -= tmp;
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break;
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case Axis.Position.HIGH: chart.plarea.width -= max_rec_width + s.axis_y.font_indent; break;
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}
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break;
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}
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}
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if (is_x && (!chart.joint_x || si == chart.zoom_1st_idx))
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switch (axis.position) {
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case Axis.Position.LOW: chart.plarea.height -= max_rec_height + max_font_indent + max_axis_font_height; break;
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case Axis.Position.HIGH:
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var tmp = max_rec_height + max_font_indent + max_axis_font_height;
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chart.plarea.y += tmp; chart.plarea.height -= tmp;
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break;
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}
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if (!is_x && (!chart.joint_y || si == chart.zoom_1st_idx))
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switch (s.axis_y.position) {
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case Axis.Position.LOW:
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var tmp = max_rec_width + max_font_indent + max_axis_font_width;
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chart.plarea.x += tmp; chart.plarea.width -= tmp;
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break;
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case Axis.Position.HIGH: chart.plarea.width -= max_rec_width + max_font_indent + max_axis_font_width; break;
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}
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}
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public virtual void join_relative_x_axes (int si,
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bool calc_max_values,
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ref double max_rec_width,
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ref double max_rec_height,
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ref double max_font_indent,
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ref double max_axis_font_height,
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ref int nskip) {
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for (int sj = si - 1; sj >= 0; --sj) {
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var s2 = chart.series[sj];
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if (!s2.zoom_show) continue;
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bool has_intersection = false;
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for (int sk = si; sk > sj; --sk) {
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var s3 = chart.series[sk];
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if (!s3.zoom_show) continue;
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if (chart.math.are_intersect(s2.place.zoom_x_min, s2.place.zoom_x_max, s3.place.zoom_x_min, s3.place.zoom_x_max)
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|| s2.axis_x.position != s3.axis_x.position
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|| s2.axis_x.type != s3.axis_x.type) {
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has_intersection = true;
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break;
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}
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}
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if (!has_intersection) {
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if (calc_max_values) {
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double tmp_max_rec_width = 0; double tmp_max_rec_height = 0;
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s2.axis_x.calc_rec_sizes (chart, out tmp_max_rec_width, out tmp_max_rec_height, true);
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max_rec_width = double.max (max_rec_width, tmp_max_rec_width);
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max_rec_height = double.max (max_rec_height, tmp_max_rec_height);
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max_font_indent = double.max (max_font_indent, s2.axis_x.font_indent);
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max_axis_font_height = double.max (max_axis_font_height, s2.axis_x.title.text == "" ? 0 :
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s2.axis_x.title.get_height(chart.ctx) + this.axis_x.font_indent);
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}
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++nskip;
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} else {
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break;
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}
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}
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}
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public virtual void join_relative_y_axes (int si,
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bool calc_max_values,
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ref double max_rec_width,
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ref double max_rec_height,
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ref double max_font_indent,
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ref double max_axis_font_width,
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ref int nskip) {
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for (int sj = si - 1; sj >= 0; --sj) {
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var s2 = chart.series[sj];
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if (!s2.zoom_show) continue;
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bool has_intersection = false;
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for (int sk = si; sk > sj; --sk) {
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var s3 = chart.series[sk];
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if (!s3.zoom_show) continue;
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if (chart.math.are_intersect(s2.place.zoom_y_min, s2.place.zoom_y_max, s3.place.zoom_y_min, s3.place.zoom_y_max)
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|| s2.axis_y.position != s3.axis_y.position
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|| s2.axis_y.type != s3.axis_y.type) {
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has_intersection = true;
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break;
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}
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}
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if (!has_intersection) {
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double tmp_max_rec_width = 0; double tmp_max_rec_height = 0;
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s2.axis_y.calc_rec_sizes (chart, out tmp_max_rec_width, out tmp_max_rec_height, false);
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max_rec_width = double.max (max_rec_width, tmp_max_rec_width);
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max_rec_height = double.max (max_rec_height, tmp_max_rec_height);
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max_font_indent = double.max (max_font_indent, s2.axis_y.font_indent);
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max_axis_font_width = double.max (max_axis_font_width, s2.axis_y.title.text == "" ? 0
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: s2.axis_y.title.get_width(chart.ctx) + this.axis_y.font_indent);
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++nskip;
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} else {
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break;
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}
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}
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}
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protected virtual void draw_horizontal_records (Float128 step, double max_rec_height, Float128 x_min) {
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// 5. Draw records, update cur_{x,y}_{min,max}.
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var ctx = chart.ctx;
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var joint_x = chart.joint_x;
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for (Float128 x = x_min, x_max = axis_x.zoom_max; chart.math.point_belong (x, x_min, x_max); x += step) {
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if (joint_x) chart.color = chart.joint_axis_color;
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else chart.color = axis_x.color;
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string text = "", time_text = "";
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switch (axis_x.type) {
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case Axis.Type.NUMBERS:
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text = axis_x.format.printf((LongDouble)x);
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break;
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case Axis.Type.DATE_TIME:
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axis_x.format_date_time(x, out text, out time_text);
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break;
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}
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var scr_x = get_scr_x (x);
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var text_t = new Text(text, axis_x.font_style, axis_x.color);
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var sz = axis_x.title.get_size(ctx);
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switch (axis_x.position) {
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case Axis.Position.LOW:
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var print_y = chart.evarea.y + chart.evarea.height - axis_x.font_indent - (axis_x.title.text == "" ? 0 : sz.height + axis_x.font_indent);
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var print_x = compact_rec_x_pos (x, text_t);
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ctx.move_to (print_x, print_y);
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switch (axis_x.type) {
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case Axis.Type.NUMBERS:
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text_t.show(ctx);
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break;
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case Axis.Type.DATE_TIME:
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if (axis_x.date_format != "") text_t.show(ctx);
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var time_text_t = new Text(time_text, axis_x.font_style, axis_x.color);
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print_x = compact_rec_x_pos (x, time_text_t);
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ctx.move_to (print_x, print_y - (axis_x.date_format == "" ? 0 : text_t.get_height(ctx) + axis_x.font_indent));
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if (axis_x.time_format != "") time_text_t.show(ctx);
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break;
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}
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// 6. Draw grid lines to the place.zoom_y_min.
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var line_style = grid.line_style;
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if (joint_x) line_style.color = Color(0, 0, 0, 0.5);
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line_style.set(chart);
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double y = chart.evarea.y + chart.evarea.height - max_rec_height - axis_x.font_indent - (axis_x.title.text == "" ? 0 : sz.height + axis_x.font_indent);
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ctx.move_to (scr_x, y);
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if (joint_x)
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ctx.line_to (scr_x, chart.plarea.y);
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else
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ctx.line_to (scr_x, double.min (y, chart.plarea.y + chart.plarea.height * (1.0 - place.zoom_y_max)));
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break;
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case Axis.Position.HIGH:
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var print_y = chart.evarea.y + max_rec_height + axis_x.font_indent + (axis_x.title.text == "" ? 0 : sz.height + axis_x.font_indent);
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var print_x = compact_rec_x_pos (x, text_t);
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ctx.move_to (print_x, print_y);
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switch (axis_x.type) {
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case Axis.Type.NUMBERS:
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text_t.show(ctx);
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break;
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case Axis.Type.DATE_TIME:
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if (axis_x.date_format != "") text_t.show(ctx);
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var time_text_t = new Text(time_text, axis_x.font_style, axis_x.color);
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print_x = compact_rec_x_pos (x, time_text_t);
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ctx.move_to (print_x, print_y - (axis_x.date_format == "" ? 0 : text_t.get_height(ctx) + axis_x.font_indent));
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if (axis_x.time_format != "") time_text_t.show(ctx);
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break;
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}
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// 6. Draw grid lines to the place.zoom_y_max.
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var line_style = grid.line_style;
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if (joint_x) line_style.color = Color(0, 0, 0, 0.5);
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line_style.set(chart);
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double y = chart.evarea.y + max_rec_height + axis_x.font_indent + (axis_x.title.text == "" ? 0 : sz.height + axis_x.font_indent);
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ctx.move_to (scr_x, y);
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if (joint_x)
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ctx.line_to (scr_x, chart.plarea.y + chart.plarea.height);
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else
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ctx.line_to (scr_x, double.max (y, chart.plarea.y + chart.plarea.height * (1.0 - place.zoom_y_min)));
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break;
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}
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}
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}
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public virtual void draw_horizontal_axis (int si, ref int nskip) {
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var s = chart.series[si];
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if (!s.zoom_show) return;
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if (chart.joint_x && si != chart.zoom_1st_idx) return;
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// 1. Detect max record width/height by axis.nrecords equally selected points using format.
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double max_rec_width, max_rec_height;
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s.axis_x.calc_rec_sizes (chart, out max_rec_width, out max_rec_height, true);
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// 2. Calculate maximal available number of records, take into account the space width.
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long max_nrecs = (long) (chart.plarea.width * (s.place.zoom_x_max - s.place.zoom_x_min) / max_rec_width);
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// 3. Calculate grid step.
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Float128 step = chart.math.calc_round_step ((s.axis_x.zoom_max - s.axis_x.zoom_min) / max_nrecs, s.axis_x.type == Axis.Type.DATE_TIME);
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if (step > s.axis_x.zoom_max - s.axis_x.zoom_min)
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step = s.axis_x.zoom_max - s.axis_x.zoom_min;
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// 4. Calculate x_min (s.axis_x.zoom_min / step, round, multiply on step, add step if < s.axis_x.zoom_min).
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Float128 x_min = 0.0;
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if (step >= 1) {
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int64 x_min_nsteps = (int64) (s.axis_x.zoom_min / step);
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x_min = x_min_nsteps * step;
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} else {
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int64 round_axis_x_min = (int64)s.axis_x.zoom_min;
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int64 x_min_nsteps = (int64) ((s.axis_x.zoom_min - round_axis_x_min) / step);
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x_min = round_axis_x_min + x_min_nsteps * step;
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}
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if (x_min < s.axis_x.zoom_min) x_min += step;
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// 4.2. Cursor values for joint X axis
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if (chart.joint_x && chart.cursors.cursor_style.orientation == Cursors.Orientation.VERTICAL && chart.cursors.cursors_crossings.length != 0) {
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switch (s.axis_x.position) {
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case Axis.Position.LOW: chart.evarea.height -= max_rec_height + s.axis_x.font_indent; break;
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case Axis.Position.HIGH: var tmp = max_rec_height + s.axis_x.font_indent; chart.evarea.y += tmp; chart.evarea.height -= tmp; break;
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}
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}
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var sz = s.axis_x.title.get_size(chart.ctx);
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// 4.5. Draw Axis title
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if (s.axis_x.title.text != "") {
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var scr_x = chart.plarea.x + chart.plarea.width * (s.place.zoom_x_min + s.place.zoom_x_max) / 2.0;
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double scr_y = 0.0;
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switch (s.axis_x.position) {
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case Axis.Position.LOW: scr_y = chart.evarea.y + chart.evarea.height - s.axis_x.font_indent; break;
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case Axis.Position.HIGH: scr_y = chart.evarea.y + s.axis_x.font_indent + sz.height; break;
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}
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chart.ctx.move_to(scr_x - sz.width / 2.0, scr_y);
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chart.color = s.axis_x.color;
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if (chart.joint_x) chart.color = chart.joint_axis_color;
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s.axis_x.title.show(chart.ctx);
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}
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s.draw_horizontal_records (step, max_rec_height, x_min);
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chart.ctx.stroke ();
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double tmp1 = 0, tmp2 = 0, tmp3 = 0, tmp4 = 0;
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s.join_relative_x_axes (si, false, ref tmp1, ref tmp2, ref tmp3, ref tmp4, ref nskip);
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if (nskip != 0) {--nskip; return;}
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switch (s.axis_x.position) {
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case Axis.Position.LOW:
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chart.evarea.height -= max_rec_height + s.axis_x.font_indent
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+ (s.axis_x.title.text == "" ? 0 : sz.height + s.axis_x.font_indent);
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break;
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case Axis.Position.HIGH:
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var tmp = max_rec_height + s.axis_x.font_indent + (s.axis_x.title.text == "" ? 0 : sz.height + s.axis_x.font_indent);
|
|
chart.evarea.y += tmp; chart.evarea.height -= tmp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
protected virtual void draw_vertical_records (Float128 step, double max_rec_width, Float128 y_min) {
|
|
// 5. Draw records, update cur_{x,y}_{min,max}.
|
|
var ctx = chart.ctx;
|
|
var joint_y = chart.joint_y;
|
|
|
|
for (Float128 y = y_min, y_max = axis_y.zoom_max; chart.math.point_belong (y, y_min, y_max); y += step) {
|
|
if (joint_y) chart.color = chart.joint_axis_color;
|
|
else chart.color = axis_y.color;
|
|
var text = axis_y.format.printf((LongDouble)y);
|
|
var scr_y = get_scr_y (y);
|
|
var text_t = new Text(text, axis_y.font_style, axis_y.color);
|
|
var text_sz = text_t.get_size(ctx);
|
|
var sz = axis_y.title.get_size(ctx);
|
|
|
|
switch (axis_y.position) {
|
|
case Axis.Position.LOW:
|
|
ctx.move_to (chart.evarea.x + max_rec_width - text_sz.width + axis_y.font_indent
|
|
+ (axis_y.title.text == "" ? 0 : sz.width + axis_y.font_indent),
|
|
compact_rec_y_pos (y, text_t));
|
|
text_t.show(ctx);
|
|
// 6. Draw grid lines to the place.zoom_x_min.
|
|
var line_style = grid.line_style;
|
|
if (joint_y) line_style.color = Color(0, 0, 0, 0.5);
|
|
line_style.set(chart);
|
|
double x = chart.evarea.x + max_rec_width + axis_y.font_indent + (axis_y.title.text == "" ? 0 : sz.width + axis_y.font_indent);
|
|
ctx.move_to (x, scr_y);
|
|
if (joint_y)
|
|
ctx.line_to (chart.plarea.x + chart.plarea.width, scr_y);
|
|
else
|
|
ctx.line_to (double.max (x, chart.plarea.x + chart.plarea.width * place.zoom_x_max), scr_y);
|
|
break;
|
|
case Axis.Position.HIGH:
|
|
ctx.move_to (chart.evarea.x + chart.evarea.width - text_sz.width - axis_y.font_indent
|
|
- (axis_y.title.text == "" ? 0 : sz.width + axis_y.font_indent),
|
|
compact_rec_y_pos (y, text_t));
|
|
text_t.show(ctx);
|
|
// 6. Draw grid lines to the place.zoom_x_max.
|
|
var line_style = grid.line_style;
|
|
if (joint_y) line_style.color = Color(0, 0, 0, 0.5);
|
|
line_style.set(chart);
|
|
double x = chart.evarea.x + chart.evarea.width - max_rec_width - axis_y.font_indent - (axis_y.title.text == "" ? 0 : sz.width + axis_y.font_indent);
|
|
ctx.move_to (x, scr_y);
|
|
if (joint_y)
|
|
ctx.line_to (chart.plarea.x, scr_y);
|
|
else
|
|
ctx.line_to (double.min (x, chart.plarea.x + chart.plarea.width * place.zoom_x_min), scr_y);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
public virtual void draw_vertical_axis (int si, ref int nskip) {
|
|
var s = chart.series[si];
|
|
if (!s.zoom_show) return;
|
|
if (chart.joint_y && si != chart.zoom_1st_idx) return;
|
|
// 1. Detect max record width/height by axis.nrecords equally selected points using format.
|
|
double max_rec_width, max_rec_height;
|
|
s.axis_y.calc_rec_sizes (chart, out max_rec_width, out max_rec_height, false);
|
|
|
|
// 2. Calculate maximal available number of records, take into account the space width.
|
|
long max_nrecs = (long) (chart.plarea.height * (s.place.zoom_y_max - s.place.zoom_y_min) / max_rec_height);
|
|
|
|
// 3. Calculate grid step.
|
|
Float128 step = chart.math.calc_round_step ((s.axis_y.zoom_max - s.axis_y.zoom_min) / max_nrecs);
|
|
if (step > s.axis_y.zoom_max - s.axis_y.zoom_min)
|
|
step = s.axis_y.zoom_max - s.axis_y.zoom_min;
|
|
|
|
// 4. Calculate y_min (s.axis_y.zoom_min / step, round, multiply on step, add step if < s.axis_y.zoom_min).
|
|
Float128 y_min = 0.0;
|
|
if (step >= 1) {
|
|
int64 y_min_nsteps = (int64) (s.axis_y.zoom_min / step);
|
|
y_min = y_min_nsteps * step;
|
|
} else {
|
|
int64 round_axis_y_min = (int64)s.axis_y.zoom_min;
|
|
int64 y_min_nsteps = (int64) ((s.axis_y.zoom_min - round_axis_y_min) / step);
|
|
y_min = round_axis_y_min + y_min_nsteps * step;
|
|
}
|
|
if (y_min < s.axis_y.zoom_min) y_min += step;
|
|
|
|
// 4.2. Cursor values for joint Y axis
|
|
if (chart.joint_y && chart.cursors.cursor_style.orientation == Cursors.Orientation.HORIZONTAL && chart.cursors.cursors_crossings.length != 0) {
|
|
switch (s.axis_y.position) {
|
|
case Axis.Position.LOW: var tmp = max_rec_width + s.axis_y.font_indent; chart.evarea.x += tmp; chart.evarea.width -= tmp; break;
|
|
case Axis.Position.HIGH: chart.evarea.width -= max_rec_width + s.axis_y.font_indent; break;
|
|
}
|
|
}
|
|
|
|
var sz = s.axis_y.title.get_size(chart.ctx);
|
|
|
|
// 4.5. Draw Axis title
|
|
if (s.axis_y.title.text != "") {
|
|
var scr_y = chart.plarea.y + chart.plarea.height * (1.0 - (s.place.zoom_y_min + s.place.zoom_y_max) / 2.0);
|
|
switch (s.axis_y.position) {
|
|
case Axis.Position.LOW:
|
|
var scr_x = chart.evarea.x + s.axis_y.font_indent + sz.width;
|
|
chart.ctx.move_to(scr_x, scr_y + sz.height / 2.0);
|
|
break;
|
|
case Axis.Position.HIGH:
|
|
var scr_x = chart.evarea.x + chart.evarea.width - s.axis_y.font_indent;
|
|
chart.ctx.move_to(scr_x, scr_y + sz.height / 2.0);
|
|
break;
|
|
}
|
|
chart.color = s.axis_y.color;
|
|
if (chart.joint_y) chart.color = chart.joint_axis_color;
|
|
s.axis_y.title.show(chart.ctx);
|
|
}
|
|
|
|
s.draw_vertical_records (step, max_rec_width, y_min);
|
|
|
|
chart.ctx.stroke ();
|
|
|
|
double tmp1 = 0, tmp2 = 0, tmp3 = 0, tmp4 = 0;
|
|
s.join_relative_y_axes (si, false, ref tmp1, ref tmp2, ref tmp3, ref tmp4, ref nskip);
|
|
|
|
if (nskip != 0) {--nskip; return;}
|
|
|
|
switch (s.axis_y.position) {
|
|
case Axis.Position.LOW:
|
|
var tmp = max_rec_width + s.axis_y.font_indent + (s.axis_y.title.text == "" ? 0 : sz.width + s.axis_y.font_indent);
|
|
chart.evarea.x += tmp; chart.evarea.width -= tmp;
|
|
break;
|
|
case Axis.Position.HIGH:
|
|
chart.evarea.width -= max_rec_width + s.axis_y.font_indent
|
|
+ (s.axis_y.title.text == "" ? 0 : sz.width + s.axis_y.font_indent); break;
|
|
}
|
|
}
|
|
|
|
public virtual double compact_rec_x_pos (Float128 x, Text text) {
|
|
var sz = text.get_size(chart.ctx);
|
|
return get_scr_x(x) - sz.width / 2.0
|
|
- sz.width * (x - (axis_x.zoom_min + axis_x.zoom_max) / 2.0) / (axis_x.zoom_max - axis_x.zoom_min);
|
|
}
|
|
|
|
public virtual double compact_rec_y_pos (Float128 y, Text text) {
|
|
var sz = text.get_size(chart.ctx);
|
|
return get_scr_y(y) + sz.height / 2.0
|
|
+ sz.height * (y - (axis_y.zoom_min + axis_y.zoom_max) / 2.0) / (axis_y.zoom_max - axis_y.zoom_min);
|
|
}
|
|
|
|
public virtual double get_scr_x (Float128 x) {
|
|
return chart.plarea.x + chart.plarea.width * (place.zoom_x_min + (x - axis_x.zoom_min) / (axis_x.zoom_max - axis_x.zoom_min) * (place.zoom_x_max - place.zoom_x_min));
|
|
}
|
|
|
|
public virtual double get_scr_y (Float128 y) {
|
|
return chart.plarea.y + chart.plarea.height * (1.0 - (place.zoom_y_min + (y - axis_y.zoom_min) / (axis_y.zoom_max - axis_y.zoom_min) * (place.zoom_y_max - place.zoom_y_min)));
|
|
}
|
|
|
|
public virtual Point get_scr_point (Point128 p) {
|
|
return Point (get_scr_x(p.x), get_scr_y(p.y));
|
|
}
|
|
|
|
public virtual Float128 get_real_x (double scr_x) {
|
|
return axis_x.zoom_min + ((scr_x - chart.plarea.x) / chart.plarea.width - place.zoom_x_min)
|
|
* (axis_x.zoom_max - axis_x.zoom_min) / (place.zoom_x_max - place.zoom_x_min);
|
|
}
|
|
|
|
public virtual Float128 get_real_y (double scr_y) {
|
|
return axis_y.zoom_min + ((chart.plarea.y + chart.plarea.height - scr_y) / chart.plarea.height - place.zoom_y_min)
|
|
* (axis_y.zoom_max - axis_y.zoom_min) / (place.zoom_y_max - place.zoom_y_min);
|
|
}
|
|
|
|
public virtual Point128 get_real_point (Point p) {
|
|
return Point128 (get_real_x(p.x), get_real_y(p.y));
|
|
}
|
|
}
|
|
}
|