visualization.py

import plotly.graph_objects as go

LANDMARK_COLORS = {
    "SHOULDER": "red",
    "ELBOW": "green",
    "WRIST": "blue",
    "INDEX": "brown",
    "THUMB": "magenta"
}

SEGMENT_CONNECTIONS = [
    ("SHOULDER", "ELBOW"),
    ("ELBOW", "WRIST"),
    ("WRIST", "INDEX"),
    ("WRIST", "THUMB")
]

def create_3d_visualization(df, current_frame, show_trajectories=True, show_segments=True, landmark_visibility=None):
    fig = go.Figure()
    
    if landmark_visibility is None:
        landmark_visibility = {lm: True for lm in ["SHOULDER", "ELBOW", "WRIST", "INDEX", "THUMB"]}

    all_coords = []

    # Ajout de la légende
    for lm, color in LANDMARK_COLORS.items():
        fig.add_trace(go.Scatter3d(
            x=[None], y=[None], z=[None],
            mode='markers',
            marker=dict(color=color, size=8),
            name=lm,
            showlegend=True
        ))

    if show_trajectories:
        for lm in ["SHOULDER", "ELBOW", "WRIST", "INDEX", "THUMB"]:
            if landmark_visibility.get(lm, True):
                x = df[f"{lm}_X_mean"]
                y = df[f"{lm}_Y_mean"]
                z = df[f"{lm}_Z_mean"]
                fig.add_trace(go.Scatter3d(
                    x=x, y=y, z=z,
                    mode='lines',
                    line=dict(color=LANDMARK_COLORS[lm], width=4),
                    opacity=0.3,
                    showlegend=False
                ))
                all_coords.extend(x)
                all_coords.extend(y)
                all_coords.extend(z)

    for lm in ["SHOULDER", "ELBOW", "WRIST", "INDEX", "THUMB"]:
        if landmark_visibility.get(lm, True):
            try:
                x = df[f"{lm}_X_mean"].iloc[current_frame]
                y = df[f"{lm}_Y_mean"].iloc[current_frame]
                z = df[f"{lm}_Z_mean"].iloc[current_frame]
                fig.add_trace(go.Scatter3d(
                    x=[x], y=[y], z=[z],
                    mode='markers',
                    marker=dict(color=LANDMARK_COLORS[lm], size=8),
                    showlegend=False
                ))
                all_coords.extend([x, y, z])
            except IndexError:
                pass

    if show_segments:
        for lm1, lm2 in SEGMENT_CONNECTIONS:
            if landmark_visibility.get(lm1, True) and landmark_visibility.get(lm2, True):
                try:
                    x1 = df[f"{lm1}_X_mean"].iloc[current_frame]
                    y1 = df[f"{lm1}_Y_mean"].iloc[current_frame]
                    z1 = df[f"{lm1}_Z_mean"].iloc[current_frame]

                    x2 = df[f"{lm2}_X_mean"].iloc[current_frame]
                    y2 = df[f"{lm2}_Y_mean"].iloc[current_frame]
                    z2 = df[f"{lm2}_Z_mean"].iloc[current_frame]

                    fig.add_trace(go.Scatter3d(
                        x=[x1, x2], y=[y1, y2], z=[z1, z2],
                        mode='lines',
                        line=dict(color='black', width=4),
                        showlegend=False
                    ))
                except IndexError:
                    pass

    if all_coords:
        min_val = min(all_coords)
        max_val = max(all_coords)
        padding = (max_val - min_val) * 0.1
        fig.update_layout(
            scene=dict(
                xaxis=dict(range=[min_val - padding, max_val + padding]),
                yaxis=dict(range=[min_val - padding, max_val + padding]),
                zaxis=dict(range=[min_val - padding, max_val + padding]),
                aspectmode='cube'
            ),
            margin=dict(l=0, r=0, b=0, t=0),
            height=800,
            width=1200,
            legend=dict(
                x=0.05,
                y=0.95,
                bgcolor='rgba(0,0,0,0.5)',
                font=dict(color='white')
            )
        )
    else:
        fig.update_layout(
            scene=dict(
                xaxis=dict(range=[-1, 1]),
                yaxis=dict(range=[-1, 1]),
                zaxis=dict(range=[-1, 1]),
                aspectmode='cube'
            ),
            margin=dict(l=0, r=0, b=0, t=0),
            height=800,
            width=1200,
            legend=dict(
                x=0.05,
                y=0.95,
                bgcolor='rgba(0,0,0,0.5)',
                font=dict(color='white')
            )
        )

    return fig