public void DrawGraph(DisplayParam disp_param, DisplayLayerParam[] layer_params)
{
if ((disp_param == null) ||
(disp_param.AxisX_Min == disp_param.AxisX_Max)
)
{
return;
}
DrawGraphDetails(disp_param, layer_params);
}
private void DrawGraphDetails(DisplayParam disp_param, DisplayLayerParam[] layer_params)
{
var graph_rect = new Rectangle(
disp_param.CanvasRect.Left + GRAPH_DETAILS_MARGIN.Left,
disp_param.CanvasRect.Top + GRAPH_DETAILS_MARGIN.Top,
disp_param.CanvasRect.Width - GRAPH_DETAILS_MARGIN.Horizontal,
disp_param.CanvasRect.Height - GRAPH_DETAILS_MARGIN.Vertical);
if ((graph_rect.Width > 0) &&
(graph_rect.Height > 0) &&
(disp_param.AxisX_Min < disp_param.AxisX_Max) &&
(disp_param.AxisY_Min < disp_param.AxisY_Max)
)
{
/* レイヤー描画 */
{
var graphics_layer = BufferedGraphicsManager.Current.Allocate(disp_param.Canvas, graph_rect);
/* 背景を初期化 */
graphics_layer.Graphics.FillRectangle(GRAPH_DETAILS_BG_BRUSH, graph_rect);
/* グラフの線を描画 */
DrawGraphDetails_Grid(graphics_layer.Graphics, graph_rect, disp_param);
/* グラフのデータを描画 */
for (var layer_index = (uint)0; layer_index < layer_params.Length; layer_index++)
{
DrawGraphDetails_Data(
graphics_layer.Graphics,
graph_rect,
disp_param.AxisX_Min,
disp_param.AxisX_Max,
disp_param.AxisY_Min,
disp_param.AxisY_Max,
layer_index,
layer_params[layer_index]);
}
/* グラフの枠を描画 */
DrawGraphDetails_Frame(graphics_layer.Graphics, graph_rect);
graphics_layer.Render(disp_param.Canvas);
graphics_layer.Dispose();
}
}
}
private void DrawGraphDetails_Grid(Graphics graphics, Rectangle graphics_rect, DisplayParam disp_param)
{
var draw_offset = 0;
var draw_scale_rect = new Rectangle();
var draw_scale_format = new StringFormat();
/* --- X軸 --- */
draw_scale_rect.Width = graphics_rect.Width * GRID_X_LINES_MAIN / GRID_X_LINES;
draw_scale_rect.Height = GRAPH_DETAILS_GRID_SCALE_FONT.Height;
draw_scale_rect.X = graphics_rect.Left - draw_scale_rect.Width / 2;
draw_scale_rect.Y = graphics_rect.Bottom;
draw_scale_format.Alignment = StringAlignment.Center;
draw_scale_format.LineAlignment = StringAlignment.Near;
for (var index = 0; index <= GRID_X_LINES; index++)
{
draw_offset = graphics_rect.Left + graphics_rect.Width * index / GRID_X_LINES;
/* 目盛(最右を0とする) */
if ((index % GRID_X_LINES_MAIN) == 0)
{
disp_param.Canvas.DrawString(
(disp_param.AxisX_Min + index * ((disp_param.AxisX_Max - disp_param.AxisX_Min) / GRID_X_LINES) - PointCount).ToString(),
GRAPH_DETAILS_GRID_SCALE_FONT,
GRAPH_DETAILS_GRID_SCALE_BRUSH,
draw_scale_rect,
draw_scale_format);
draw_scale_rect.X += draw_scale_rect.Width;
}
/* ライン */
if ((index > 0) && (index < GRID_X_LINES))
{
graphics.DrawLine(
((index % 5) == 0) ? (GRAPH_DETAILS_GRID_LINE_MAIN_PEN) : (GRAPH_DETAILS_GRID_LINE_SUB_PEN),
draw_offset,
graphics_rect.Top,
draw_offset,
graphics_rect.Bottom);
}
}
/* --- Y軸 --- */
draw_scale_rect.Width = GRAPH_DETAILS_MARGIN.Right;
draw_scale_rect.Height = graphics_rect.Height * GRID_Y_LINES_MAIN / GRID_Y_LINES;
draw_scale_rect.X = graphics_rect.Right;
draw_scale_rect.Y = graphics_rect.Top - draw_scale_rect.Height / 2;
draw_scale_format.Alignment = StringAlignment.Near;
draw_scale_format.LineAlignment = StringAlignment.Center;
for (var index = 0; index <= GRID_Y_LINES; index++)
{
draw_offset = graphics_rect.Top + graphics_rect.Height * index / GRID_Y_LINES;
/* 目盛 */
if ((index % GRID_Y_LINES_MAIN) == 0)
{
disp_param.Canvas.DrawString(
(disp_param.AxisY_Max - index * ((disp_param.AxisY_Max - disp_param.AxisY_Min) / GRID_Y_LINES)).ToString(),
GRAPH_DETAILS_GRID_SCALE_FONT,
GRAPH_DETAILS_GRID_SCALE_BRUSH,
draw_scale_rect,
draw_scale_format);
draw_scale_rect.Y += draw_scale_rect.Height;
}
/* ライン */
if ((index > 0) && (index < GRID_Y_LINES))
{
graphics.DrawLine(
((index % 5) == 0) ? (GRAPH_DETAILS_GRID_LINE_MAIN_PEN) : (GRAPH_DETAILS_GRID_LINE_SUB_PEN),
graphics_rect.Left,
draw_offset,
graphics_rect.Right,
draw_offset);
}
}
}
