overte/interface/src/ui/overlays/Cube3DOverlay.cpp

//
//  Cube3DOverlay.cpp
//  interface/src/ui/overlays
//
//  Copyright 2014 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

// include this before QGLWidget, which includes an earlier version of OpenGL
#include "Cube3DOverlay.h"

#include <QScriptValue>

#include <DeferredLightingEffect.h>
#include <SharedUtil.h>
#include <StreamUtils.h>
#include <GeometryCache.h>
#include <DependencyManager.h>

QString const Cube3DOverlay::TYPE = "cube";

Cube3DOverlay::Cube3DOverlay(const Cube3DOverlay* cube3DOverlay) :
    Volume3DOverlay(cube3DOverlay)
{
}

void Cube3DOverlay::render(RenderArgs* args) {
    if (!_visible) {
        return; // do nothing if we're not visible
    }

    float alpha = getAlpha();
    xColor color = getColor();
    const float MAX_COLOR = 255.0f;
    glm::vec4 cubeColor(color.red / MAX_COLOR, color.green / MAX_COLOR, color.blue / MAX_COLOR, alpha);

    // TODO: handle registration point??
    glm::vec3 position = getPosition();
    glm::vec3 dimensions = getDimensions();
    glm::quat rotation = getRotation();

    auto batch = args->_batch;

    if (batch) {
        Transform transform;
        transform.setTranslation(position);
        transform.setRotation(rotation);
        if (_isSolid) {
            // if (_borderSize > 0) {
            //     // Draw a cube at a larger size behind the main cube, creating
            //     // a border effect.
            //     // Disable writing to the depth mask so that the "border" cube will not
            //     // occlude the main cube.  This means the border could be covered by
            //     // overlays that are further back and drawn later, but this is good
            //     // enough for the use-case.
            //     transform.setScale(dimensions * _borderSize);
            //     batch->setModelTransform(transform);
            //     DependencyManager::get<GeometryCache>()->renderSolidCube(*batch, 1.0f, glm::vec4(1.0f, 1.0f, 1.0f, alpha));
            // }

            transform.setScale(dimensions);
            DependencyManager::get<DeferredLightingEffect>()->renderSolidCubeInstance(*batch, transform, cubeColor);
        } else {

            if (getIsDashedLine()) {
                transform.setScale(1.0f);
                batch->setModelTransform(transform);

                glm::vec3 halfDimensions = dimensions / 2.0f;
                glm::vec3 bottomLeftNear(-halfDimensions.x, -halfDimensions.y, -halfDimensions.z);
                glm::vec3 bottomRightNear(halfDimensions.x, -halfDimensions.y, -halfDimensions.z);
                glm::vec3 topLeftNear(-halfDimensions.x, halfDimensions.y, -halfDimensions.z);
                glm::vec3 topRightNear(halfDimensions.x, halfDimensions.y, -halfDimensions.z);

                glm::vec3 bottomLeftFar(-halfDimensions.x, -halfDimensions.y, halfDimensions.z);
                glm::vec3 bottomRightFar(halfDimensions.x, -halfDimensions.y, halfDimensions.z);
                glm::vec3 topLeftFar(-halfDimensions.x, halfDimensions.y, halfDimensions.z);
                glm::vec3 topRightFar(halfDimensions.x, halfDimensions.y, halfDimensions.z);

                auto geometryCache = DependencyManager::get<GeometryCache>();

                geometryCache->renderDashedLine(*batch, bottomLeftNear, bottomRightNear, cubeColor);
                geometryCache->renderDashedLine(*batch, bottomRightNear, bottomRightFar, cubeColor);
                geometryCache->renderDashedLine(*batch, bottomRightFar, bottomLeftFar, cubeColor);
                geometryCache->renderDashedLine(*batch, bottomLeftFar, bottomLeftNear, cubeColor);

                geometryCache->renderDashedLine(*batch, topLeftNear, topRightNear, cubeColor);
                geometryCache->renderDashedLine(*batch, topRightNear, topRightFar, cubeColor);
                geometryCache->renderDashedLine(*batch, topRightFar, topLeftFar, cubeColor);
                geometryCache->renderDashedLine(*batch, topLeftFar, topLeftNear, cubeColor);

                geometryCache->renderDashedLine(*batch, bottomLeftNear, topLeftNear, cubeColor);
                geometryCache->renderDashedLine(*batch, bottomRightNear, topRightNear, cubeColor);
                geometryCache->renderDashedLine(*batch, bottomLeftFar, topLeftFar, cubeColor);
                geometryCache->renderDashedLine(*batch, bottomRightFar, topRightFar, cubeColor);

            } else {
                batch->setModelTransform(Transform());
                transform.setScale(dimensions);
                DependencyManager::get<DeferredLightingEffect>()->renderWireCubeInstance(*batch, transform, cubeColor);
            }
        }
    }
}

Cube3DOverlay* Cube3DOverlay::createClone() const {
    return new Cube3DOverlay(this);
}

void Cube3DOverlay::setProperties(const QScriptValue& properties) {
    Volume3DOverlay::setProperties(properties);

    QScriptValue borderSize = properties.property("borderSize");

    if (borderSize.isValid()) {
        float value = borderSize.toVariant().toFloat();
        setBorderSize(value);
    }
}

QScriptValue Cube3DOverlay::getProperty(const QString& property) {
    if (property == "borderSize") {
        return _borderSize;
    }

    return Volume3DOverlay::getProperty(property);
}