The open source OpenXR runtime
u/var: Add u_var_curve
Let's you draw any arbitrary curve from a getter function.
authored by
Mateo de Mayo
and committed by
Moses Turner
0324fbae
bf9e6fa3
+48
-1
+22
-1
src/xrt/auxiliary/util/u_var.h
+22
-1
src/xrt/auxiliary/util/u_var.h
···
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float height; //!< Widget height or 0 for auto
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};
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struct u_var_curve_point
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{
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// Using doubles like ImPlotPoint
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double x;
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double y;
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};
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typedef struct u_var_curve_point (*u_var_curve_getter)(void *data, int i);
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struct u_var_curve
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{
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u_var_curve_getter getter; //!< Getter of 2D points for the curve
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void *data; //!< User data for `getter`
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int count; //!< Number of points to draw; param i < count
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const char *label; //!< Curve name
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const char *xlabel; //!< Label of the X axis
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const char *ylabel; //!< Label of the Y axis
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};
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/*!
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* What kind of variable is this tracking.
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*/
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U_VAR_KIND_COMBO,
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U_VAR_KIND_HISTOGRAM_F32,
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U_VAR_KIND_DRAGGABLE_U16,
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U_VAR_KIND_CURVE,
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};
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#define U_VAR_NAME_STRING_SIZE 256
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ADD_FUNC(combo, struct u_var_combo, COMBO) \
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ADD_FUNC(draggable_f32, struct u_var_draggable_f32, DRAGGABLE_F32) \
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ADD_FUNC(draggable_u16, struct u_var_draggable_u16, DRAGGABLE_U16) \
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ADD_FUNC(histogram_f32, struct u_var_histogram_f32, HISTOGRAM_F32)
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ADD_FUNC(histogram_f32, struct u_var_histogram_f32, HISTOGRAM_F32) \
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ADD_FUNC(curve, struct u_var_curve, CURVE)
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#define ADD_FUNC(SUFFIX, TYPE, ENUM) void u_var_add_##SUFFIX(void *, TYPE *, const char *);
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+26
src/xrt/state_trackers/gui/gui_scene_debug.c
+26
src/xrt/state_trackers/gui/gui_scene_debug.c
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igPlotHistogramFloatPtr(name, h->values, h->count, 0, NULL, FLT_MAX, FLT_MAX, zero, sizeof(float));
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}
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static ImPlotPoint
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curve_var_implot_getter(void *ptr, int i)
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{
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struct u_var_curve *c = (struct u_var_curve *)ptr;
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struct u_var_curve_point point = c->getter(c->data, i);
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ImPlotPoint implot_point = {point.x, point.y};
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return implot_point;
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}
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static void
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on_curve_var(const char *name, void *ptr)
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{
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struct u_var_curve *c = (struct u_var_curve *)ptr;
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ImVec2 size = {igGetWindowContentRegionWidth(), 256};
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bool shown = ImPlot_BeginPlot(name, c->xlabel, c->ylabel, size, 0, 0, 0, 0, 0);
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if (!shown) {
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return;
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}
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ImPlot_PlotLineG(c->label, curve_var_implot_getter, c, c->count, 0);
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ImPlot_EndPlot();
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}
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static void
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on_draggable_f32_var(const char *name, void *ptr)
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{
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case U_VAR_KIND_COMBO: on_combo_var(name, ptr); break;
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case U_VAR_KIND_DRAGGABLE_U16: on_draggable_u16_var(name, ptr); break;
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case U_VAR_KIND_HISTOGRAM_F32: on_histogram_f32_var(name, ptr); break;
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case U_VAR_KIND_CURVE: on_curve_var(name, ptr); break;
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default: igLabelText(name, "Unknown tag '%i'", kind); break;
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}
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}