Add sliders2.jl

Author: ufechner7

examples/sliders2.jl

@@ -0,0 +1,59 @@
+using GLMakie
+
+function figure_eight_path(A, B, C, D, x0, y0, theta, num_points)
+    t = range(0, 2π, length=num_points)
+    x = A * sin.(t)
+    y = B * sin.(t) .* cos.(t) .+ C .* cos.(t) .+ D .* cos.(2t)
+    # Apply rotation
+    x_rot = x .* cos(theta) .- y .* sin(theta) 
+    y_rot = x .* sin(theta) .+ y .* cos(theta)
+    y_rot = y_rot / (maximum(y_rot)/(B/2))
+    # Apply translation
+    x_final = x_rot .+ x0
+    y_final = y_rot .+ y0
+    return x_final, y_final
+end
+
+# Example usage:
+A = 10.0      # width of the figure-eight
+B = 5.0       # height of the figure-eight
+C = Observable(1.0)       # size of right part of the figure-eight
+D = Observable(1.0)      # asymmetry factor
+x0 = 0.0      # center x-coordinate
+y0 = 0.0      # center y-coordinate
+theta = 0*π/6   # rotation angle in radians
+num_points = 200
+
+# Define the x range
+x = LinRange(0, 6π, 500)
+
+# Observable for the y values
+y = @lift($C .* sin.($D .* x))
+
+# Create the figure and axis
+fig = Figure()
+ax = Axis(fig[1, 1], xlabel = "x", ylabel = "y")
+
+# Plot the sine wave
+lineplot = lines!(ax, x, y)
+
+# Create sliders for amplitude and frequency
+sg = SliderGrid(
+    fig[2, 1],
+    (label = "C", range = 0.0:0.01:2.0, startvalue = 1.0),
+    (label = "D", range = 0.5:0.01:3.0, startvalue = 1.0)
+)
+
+# Connect sliders to observables
+on(sg.sliders[1].value) do val
+    C[] = val
+end
+
+on(sg.sliders[2].value) do val
+    D[] = val
+end
+
+# Optional: keep axis limits stable if amplitude changes a lot
+# ax.ylims = (-2, 2)  # or use autolimits! if you prefer dynamic limits
+
+fig