cvMeasurementToolsCommon.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#ifndef CV_MEASUREMENT_TOOLS_COMMON_H
#define CV_MEASUREMENT_TOOLS_COMMON_H
 
#include <vtkPointHandleRepresentation3D.h>
#include <vtkProperty.h>
 
namespace cvMeasurementTools {
 
// ParaView-style colors
constexpr double FOREGROUND_COLOR[3] = {1.0, 1.0,
                                        1.0};  // White for normal state
constexpr double INTERACTION_COLOR[3] = {
        0.0, 1.0, 0.0};  // Green for selected/interactive state
constexpr double RAY_COLOR[3] = {1.0, 0.0,
                                 0.0};  // Red for angle rays (ParaView default)
constexpr double ARC_COLOR[3] = {
        1.0, 0.1, 0.0};  // Orange-red for arc and text (ParaView default)
 
inline void configureHandle3D(vtkPointHandleRepresentation3D* handle) {
    if (!handle) return;
 
    // Set normal (foreground) color - white
    if (auto* prop = handle->GetProperty()) {
        prop->SetColor(FOREGROUND_COLOR[0], FOREGROUND_COLOR[1],
                       FOREGROUND_COLOR[2]);
    }
 
    // Set selected (interaction) color - green
    if (auto* selectedProp = handle->GetSelectedProperty()) {
        selectedProp->SetColor(INTERACTION_COLOR[0], INTERACTION_COLOR[1],
                               INTERACTION_COLOR[2]);
    }
 
    // Configure cursor appearance - show only the crosshair axes, no
    // outline/shadows
    handle->AllOff();  // Turn off outline and all shadows
 
    // Enable smooth motion and translation mode for better handle movement
    handle->SmoothMotionOn();
    handle->TranslationModeOn();
}
 
}  // namespace cvMeasurementTools
 
#endif  // CV_MEASUREMENT_TOOLS_COMMON_H