vferrari/opengl_plot
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no mouse zoom

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This commit is contained in:
Vicente Ferrari Smith 2024-12-22 12:18:22 +01:00
parent 74525e08ac
commit f07013ad8a
1 changed files with 34 additions and 29 deletions
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63
module.jai
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@ -188,7 +188,7 @@ draw_plot :: (key: string, size: Vector2, xdata: []float64, yarrays: [][]float64
plot.pos.y += -mouse_delta.y * pixel_size_y / plot.zoom; plot.pos.y += -mouse_delta.y * pixel_size_y / plot.zoom;
} }
if !fixed_bounds { if mouse_wheel_zoom && !fixed_bounds {
plot.zoom += plot.zoom * (cast(float) mouse_wheel_delta * 0.1); plot.zoom += plot.zoom * (cast(float) mouse_wheel_delta * 0.1);
if plot.zoom < 0.01 { if plot.zoom < 0.01 {
@ -287,9 +287,10 @@ free_old_plots :: () {
} }
} }
init :: (_win_width: s32, _win_height: s32) { init :: (_win_width: s32, _win_height: s32, _mouse_wheel_zoom : bool) {
win_width = _win_width; win_width = _win_width;
win_height = _win_height; win_height = _win_height;
mouse_wheel_zoom = _mouse_wheel_zoom;
error := FT_Init_FreeType(*ftlib); error := FT_Init_FreeType(*ftlib);
if error { if error {
@ -351,6 +352,8 @@ primitives_rendered_this_frame : int;
win_width : s32; win_width : s32;
win_height : s32; win_height : s32;
mouse_wheel_zoom : bool;
PlotColors :: struct { PlotColors :: struct {
background : Vector3; background : Vector3;
lines : Vector3; lines : Vector3;
@ -521,40 +524,42 @@ draw_axis :: (using plot: Plot, style: PLOT_STYLE, colors: PlotColors) {
array_add(*positions, .{0.0, xx (content_height )}); array_add(*positions, .{0.0, xx (content_height )});
array_add(*positions, .{0.0, 0.0}); array_add(*positions, .{0.0, 0.0});
x_ticks := 10; if plot.xfloat.count > 0 {
for 0..x_ticks { x_ticks := 10;
xpos : s64 = cast(s64) (cast(float) it / cast(float) x_ticks * cast(float) (content_width)); for 0..x_ticks {
xxx := (((cast(float) it / cast(float) x_ticks) - 0.5) / zoom) + 0.5; xpos : s64 = cast(s64) (cast(float) it / cast(float) x_ticks * cast(float) (content_width));
xxx = xxx * (xmax - (pos.x)) + (1 - xxx) * (xmin - (pos.x)); xxx := (((cast(float) it / cast(float) x_ticks) - 0.5) / zoom) + 0.5;
xxx = xxx * (xmax - (pos.x)) + (1 - xxx) * (xmin - (pos.x));
array_add(*positions, .{cast(float) xpos, 0.0}); array_add(*positions, .{cast(float) xpos, 0.0});
array_add(*positions, .{cast(float) xpos, cast(float) (content_height )}); array_add(*positions, .{cast(float) xpos, cast(float) (content_height )});
to_render := tprint("%", formatFloat(cast(float) xxx, trailing_width = 1, zero_removal = .NO)); to_render := tprint("%", formatFloat(cast(float) xxx, trailing_width = 1, zero_removal = .NO));
label_size := calculate_string_draw_size(*JetBrainsMonoRegular, to_render); label_size := calculate_string_draw_size(*JetBrainsMonoRegular, to_render);
if style == .TICK_MARKS { if style == .TICK_MARKS {
render_string(*JetBrainsMonoRegular, to_render, render_string(*JetBrainsMonoRegular, to_render,
.{xpos + left_bearing - (label_size.x / 2.0), xx (plot.height - bottom_bearing + 4.0)}, .{xpos + left_bearing - (label_size.x / 2.0), xx (plot.height - bottom_bearing + 4.0)},
colors.text, plot.width, plot.height); colors.text, plot.width, plot.height);
}
} }
}
y_ticks := 10; y_ticks := 10;
for 0..y_ticks { for 0..y_ticks {
ypos : s64 = cast(s64) (cast(float) it / cast(float) y_ticks * (content_height )); ypos : s64 = cast(s64) (cast(float) it / cast(float) y_ticks * (content_height ));
yyy := ((0.5) - cast(float) it / cast(float) y_ticks) / zoom + 0.5; yyy := ((0.5) - cast(float) it / cast(float) y_ticks) / zoom + 0.5;
yyy = yyy * (ymax - pos.y) + (1 - yyy) * (ymin - pos.y); yyy = yyy * (ymax - pos.y) + (1 - yyy) * (ymin - pos.y);
array_add(*positions, .{0.0, cast(float) ypos}); array_add(*positions, .{0.0, cast(float) ypos});
array_add(*positions, .{cast(float) (content_width ), cast(float) ypos}); array_add(*positions, .{cast(float) (content_width ), cast(float) ypos});
to_render := tprint("%", formatFloat(cast(float) yyy, trailing_width = 1, zero_removal = .NO)); to_render := tprint("%", formatFloat(cast(float) yyy, trailing_width = 1, zero_removal = .NO));
label_size := calculate_string_draw_size(*JetBrainsMonoRegular, to_render); label_size := calculate_string_draw_size(*JetBrainsMonoRegular, to_render);
if style == .TICK_MARKS { if style == .TICK_MARKS {
render_string(*JetBrainsMonoRegular, to_render, render_string(*JetBrainsMonoRegular, to_render,
.{xx cast(s64) (left_bearing - label_size.x - 4.0), xx cast(s64) (ypos - label_size.y / 2.0)}, .{xx cast(s64) (left_bearing - label_size.x - 4.0), xx cast(s64) (ypos - label_size.y / 2.0)},
colors.text, plot.width, plot.height); colors.text, plot.width, plot.height);
}
} }
} }