#include "formtextures.h"

#include "../lib_paysages/textures.h"
#include "../lib_paysages/scenery.h"
#include "tools.h"

static TexturesDefinition _definition;
static TextureLayerDefinition _layer;

typedef struct
{
    Curve* height_curve;
    Curve* slope_curve;
} TextureSupp;
static TextureSupp _supp;

/**************** Previews ****************/
class PreviewTexturesCoverage:public BasePreview
{
public:
    PreviewTexturesCoverage(QWidget* parent):BasePreview(parent)
    {
        _terrain = terrainCreateDefinition();
        
        _renderer = rendererCreate();
        _renderer.render_quality = 3;
        _renderer.getTerrainHeight = _getTerrainHeight;
        _renderer.customData[0] = &_terrain;
        
        _preview_layer = texturesLayerCreateDefinition();
        
        addOsd(QString("geolocation"));
        
        configScaling(0.5, 200.0, 1.0, 50.0);
        configScrolling(-1000.0, 1000.0, 0.0, -1000.0, 1000.0, 0.0);
    }
protected:
    QColor getColor(double x, double y)
    {
        Vector3 location;
        double coverage;
        location.x = x;
        location.y = terrainGetHeight(&_terrain, x, y);
        location.z = y;
        coverage = texturesGetLayerCoverage(&_preview_layer, &_renderer, location, this->scaling);
        return QColor::fromRgbF(coverage, coverage, coverage, 1.0);
    }
    void updateData()
    {
        sceneryGetTerrain(&_terrain);
        texturesLayerCopyDefinition(&_layer, &_preview_layer);
    }

private:
    static double _getTerrainHeight(Renderer* renderer, double x, double z)
    {
        return terrainGetHeight((TerrainDefinition*)(renderer->customData[0]), x, z);
    }

    Renderer _renderer;
    TextureLayerDefinition _preview_layer;
    TerrainDefinition _terrain;
};

class PreviewTexturesColor:public BasePreview
{
public:
    PreviewTexturesColor(QWidget* parent):BasePreview(parent)
    {
        LightDefinition light;

        _preview_layer = texturesLayerCreateDefinition();
        
        _lighting = lightingCreateDefinition();
        light.color = COLOR_WHITE;
        light.direction.x = 0.0;
        light.direction.y = -0.4794;
        light.direction.z = 0.8776;
        light.filtered = 0;
        light.masked = 0;
        light.reflection = 1.0;
        lightingAddLight(&_lighting, light);
        lightingValidateDefinition(&_lighting);
        
        _renderer = rendererCreate();
        _renderer.render_quality = 3;
        _renderer.getLightStatus = _getLightStatus;
        _renderer.customData[0] = &_lighting;
        _renderer.camera_location.x = 0.0;
        _renderer.camera_location.y = 20.0;
        _renderer.camera_location.z = 0.0;
        
        _zone = zoneCreate();
        
        configScaling(0.01, 1.0, 0.01, 0.1);
        configScrolling(-1000.0, 1000.0, 0.0, -1000.0, 1000.0, 0.0);
    }
protected:
    QColor getColor(double x, double y)
    {
        Vector3 location;
        location.x = x;
        location.y = 0.0;
        location.z = y;
        return colorToQColor(texturesGetLayerColor(&_preview_layer, &_renderer, location, this->scaling));
    }
    void updateData()
    {
        texturesLayerCopyDefinition(&_layer, &_preview_layer);
        zoneCopy(_zone, _preview_layer.zone);
    }
private:
    Zone* _zone;
    Renderer _renderer;
    TextureLayerDefinition _preview_layer;
    LightingDefinition _lighting;
    
    static void _getLightStatus(Renderer* renderer, LightStatus* status, Vector3 location)
    {
        lightingGetStatus((LightingDefinition*)renderer->customData[0], renderer, location, status);
    }
};

/**************** Form ****************/
FormTextures::FormTextures(QWidget *parent):
    BaseForm(parent, false, true)
{
    _definition = texturesCreateDefinition();
    _layer = texturesLayerCreateDefinition();
    _supp.height_curve = curveCreate();
    _supp.slope_curve = curveCreate();

    previewCoverage = new PreviewTexturesCoverage(this);
    previewColor = new PreviewTexturesColor(this);
    addPreview(previewCoverage, tr("Coverage preview"));
    addPreview(previewColor, tr("Lighted sample"));

    addInputNoise(tr("Surface noise"), _layer.bump_noise);
    addInputDouble(tr("Surface noise height"), &_layer.bump_height, 0.0, 0.1, 0.001, 0.01);
    addInputDouble(tr("Surface noise scaling"), &_layer.bump_scaling, 0.001, 0.1, 0.001, 0.01);
    addInputMaterial(tr("Material"), &_layer.material);
    addInputCurve(tr("Coverage by altitude"), _supp.height_curve, -20.0, 20.0, 0.0, 1.0, tr("Terrain altitude"), tr("Texture coverage"));
    addInputCurve(tr("Coverage by slope"), _supp.slope_curve, 0.0, 5.0, 0.0, 1.0, tr("Terrain slope"), tr("Texture coverage"));
    addInputDouble(tr("Amplitude for slope coverage"), &_layer.slope_range, 0.001, 0.1, 0.001, 0.01);
    addInputDouble(tr("Layer thickness"), &_layer.thickness, 0.0, 0.1, 0.001, 0.01);
    addInputDouble(tr("Transparency thickness"), &_layer.thickness_transparency, 0.0, 0.1, 0.001, 0.01);

    revertConfig();
}

FormTextures::~FormTextures()
{
    texturesDeleteDefinition(&_definition);
    texturesLayerDeleteDefinition(&_layer);
    curveDelete(_supp.height_curve);
    curveDelete(_supp.slope_curve);
}

void FormTextures::revertConfig()
{
    sceneryGetTextures(&_definition);
    BaseForm::revertConfig();
}

void FormTextures::applyConfig()
{
    configChangeEvent();
    scenerySetTextures(&_definition);
    BaseForm::applyConfig();
}

void FormTextures::configChangeEvent()
{
    texturesLayerCopyDefinition(&_layer, texturesGetLayer(&_definition, currentLayer()));
    
    zoneSetHeightCurve(_layer.zone, _supp.height_curve);
    zoneSetSlopeCurve(_layer.zone, _supp.slope_curve);

    texturesValidateDefinition(&_definition);
    BaseForm::configChangeEvent();
}

QStringList FormTextures::getLayers()
{
    QStringList result;
    TextureLayerDefinition* layer;
    int i, n;
    
    n = texturesGetLayerCount(&_definition);
    for (i = 0; i < n; i++)
    {
        layer = texturesGetLayer(&_definition, i);
        result << QString::fromUtf8(layer->name);
    }
    
    return result;
}

void FormTextures::layerAddedEvent()
{
    if (texturesAddLayer(&_definition) >= 0)
    {
        BaseForm::layerAddedEvent();
    }
}

void FormTextures::layerDeletedEvent(int layer)
{
    texturesDeleteLayer(&_definition, layer);
    
    BaseForm::layerDeletedEvent(layer);
}

void FormTextures::layerMovedEvent(int layer, int new_position)
{
    texturesMoveLayer(&_definition, layer, new_position);
    
    BaseForm::layerMovedEvent(layer, new_position);
}

void FormTextures::layerRenamedEvent(int layer, QString new_name)
{
    TextureLayerDefinition* layer_def;
    
    layer_def = texturesGetLayer(&_definition, layer);
    texturesLayerSetName(layer_def, new_name.toUtf8().data());
    
    BaseForm::layerRenamedEvent(layer, new_name);
}

void FormTextures::layerSelectedEvent(int layer)
{
    texturesLayerCopyDefinition(texturesGetLayer(&_definition, layer), &_layer);
    
    zoneGetHeightCurve(_layer.zone, _supp.height_curve);
    zoneGetSlopeCurve(_layer.zone, _supp.slope_curve);
    
    BaseForm::layerSelectedEvent(layer);
}