/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2011-     Statoil ASA
//  Copyright (C) 2013-     Ceetron Solutions AS
//  Copyright (C) 2011-2012 Ceetron AS
//
//  ResInsight is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
//  FITNESS FOR A PARTICULAR PURPOSE.
//
//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RivMeasurementPartMgr.h"

#include "RiaApplication.h"
#include "RiaBoundingBoxTools.h"
#include "RiaColorTools.h"
#include "RiaFontCache.h"
#include "RiaPreferences.h"

#include "Rim3dView.h"
#include "RimAnnotationInViewCollection.h"
#include "RimMeasurement.h"
#include "RimPolylinesFromFileAnnotationInView.h"
#include "RimProject.h"
#include "RimUserDefinedPolylinesAnnotationInView.h"

#include "RivPartPriority.h"
#include "RivPolylineAnnotationPartMgr.h"
#include "RivPolylineGenerator.h"
#include "RivReachCircleAnnotationPartMgr.h"
#include "RivTextAnnotationPartMgr.h"

#include "cvfBoundingBox.h"
#include "cvfDrawableGeo.h"
#include "cvfDrawableText.h"
#include "cvfModelBasicList.h"
#include "cvfPart.h"
#include "cvfRenderStateDepth.h"
#include "cvfRenderStatePoint.h"
#include "cvfqtUtils.h"

#include "cafDisplayCoordTransform.h"
#include "cafEffectGenerator.h"

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivMeasurementPartMgr::RivMeasurementPartMgr(Rim3dView* view)
    : m_rimView(view)
    , m_measurement(nullptr)
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivMeasurementPartMgr::~RivMeasurementPartMgr() {}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RivMeasurementPartMgr::appendGeometryPartsToModel(cvf::ModelBasicList*              model,
                                                       const caf::DisplayCoordTransform* displayCoordTransform,
                                                       const cvf::BoundingBox&           boundingBox)
{
    if (m_measurement.isNull())
    {
        m_measurement = RiaApplication::instance()->project()->measurement();
    }

    if (m_measurement.isNull()) return;
    if (m_measurement->pointsInDomainCoords().empty()) return;

    // Check bounding box
    if (!isPolylinesInBoundingBox(boundingBox)) return;

    buildPolyLineParts(displayCoordTransform);

    if (m_linePart.notNull())
    {
        model->addPart(m_linePart.p());
    }

    if (m_pointPart.notNull())
    {
        model->addPart(m_pointPart.p());
    }

    if (m_labelPart.notNull())
    {
        model->addPart(m_labelPart.p());
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RivMeasurementPartMgr::clearGeometryCache()
{
    m_linePart  = nullptr;
    m_pointPart = nullptr;
    m_labelPart = nullptr;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RivMeasurementPartMgr::buildPolyLineParts(const caf::DisplayCoordTransform* displayCoordTransform)
{
    auto pointsInDisplay = displayCoordTransform->transformToDisplayCoords(m_measurement->pointsInDomainCoords());

    // Measurement lines
    {
        cvf::ref<cvf::DrawableGeo> polylineGeo = RivPolylineGenerator::createLineAlongPolylineDrawable(pointsInDisplay);
        if (polylineGeo.notNull())
        {
            cvf::ref<cvf::Part> part = new cvf::Part;
            part->setName("Cross Section Polyline");
            part->setDrawable(polylineGeo.p());

            part->updateBoundingBox();
            part->setPriority(RivPartPriority::PartType::Highlight);

            cvf::ref<cvf::Effect>    eff;
            caf::MeshEffectGenerator lineEffGen(cvf::Color3::MAGENTA);
            eff = lineEffGen.generateUnCachedEffect();

            cvf::ref<cvf::RenderStateDepth> depth = new cvf::RenderStateDepth;
            depth->enableDepthTest(false);
            eff->setRenderState(depth.p());

            part->setEffect(eff.p());

            m_linePart = part;
        }
    }

    // Measurement points
    cvf::ref<cvf::DrawableGeo> polylinePointsGeo = RivPolylineGenerator::createPointsFromPolylineDrawable(pointsInDisplay);
    if (polylinePointsGeo.notNull())
    {
        cvf::ref<cvf::Part> part = new cvf::Part;
        part->setName("Cross Section Polyline");
        part->setDrawable(polylinePointsGeo.p());

        part->updateBoundingBox();
        part->setPriority(RivPartPriority::PartType::Highlight);

        cvf::ref<cvf::Effect>    eff;
        caf::MeshEffectGenerator lineEffGen(cvf::Color3::MAGENTA);
        eff = lineEffGen.generateUnCachedEffect();

        cvf::ref<cvf::RenderStateDepth> depth = new cvf::RenderStateDepth;
        depth->enableDepthTest(false);
        eff->setRenderState(depth.p());

        cvf::ref<cvf::RenderStatePoint> pointRendState = new cvf::RenderStatePoint(cvf::RenderStatePoint::FIXED_SIZE);
        pointRendState->setSize(5.0f);
        eff->setRenderState(pointRendState.p());

        part->setEffect(eff.p());

        m_pointPart = part;
    }

    // Text label
    if (pointsInDisplay.size() > 1)
    {
        auto    fontSize        = RiaFontCache::FONT_SIZE_8;
        auto    backgroundColor = RiaApplication::instance()->preferences()->defaultViewerBackgroundColor;
        auto    fontColor       = cvf::Color3f::BLACK;
        QString text            = m_measurement->label();
        auto    labelPosition   = pointsInDisplay.back();

        auto                        font         = RiaFontCache::getFont(fontSize);
        cvf::ref<cvf::DrawableText> drawableText = new cvf::DrawableText;
        drawableText->setFont(font.p());
        drawableText->setCheckPosVisible(false);
        drawableText->setDrawBorder(true);
        drawableText->setDrawBackground(true);
        drawableText->setVerticalAlignment(cvf::TextDrawer::BASELINE);
        drawableText->setBackgroundColor(backgroundColor);
        drawableText->setBorderColor(RiaColorTools::computeOffsetColor(backgroundColor, 0.3f));
        drawableText->setTextColor(fontColor);

        cvf::String cvfString = cvfqt::Utils::toString(text);

        cvf::Vec3f textCoord(labelPosition);
        drawableText->addText(cvfString, textCoord);

        cvf::ref<cvf::Part> part = new cvf::Part;
        part->setName("RivMeasurementPartMgr: " + cvfString);
        part->setDrawable(drawableText.p());

        cvf::ref<cvf::Effect> eff = new cvf::Effect();
        part->setEffect(eff.p());
        part->setPriority(RivPartPriority::PartType::Text);

        m_labelPart = part;
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RivMeasurementPartMgr::isPolylinesInBoundingBox(const cvf::BoundingBox& boundingBox)
{
    auto effectiveBoundingBox = RiaBoundingBoxTools::inflate(boundingBox, 3);
    for (const auto& pt : m_measurement->pointsInDomainCoords())
    {
        if (effectiveBoundingBox.contains(pt)) return true;
    }
    return false;
}