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Create PickItemsJob than can be used to select a render item in front of the camera

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Olivier Prat 2017-08-08 12:04:44 +02:00
parent e0daa92757
commit add675e16c
2 changed files with 104 additions and 0 deletions
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51
libraries/render-utils/src/PickItemsJob.cpp Normal file
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//
// PickItemsJob.cpp
// render-utils/src/
//
// Created by Olivier Prat on 08/08/17.
// Copyright 2017 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 "PickItemsJob.h"
void PickItemsJob::configure(const Config& config) {
_isEnabled = config.isEnabled;
}
void PickItemsJob::run(const render::RenderContextPointer& renderContext, const PickItemsJob::Input& input, PickItemsJob::Output& output) {
output.clear();
if (_isEnabled) {
float minIsectDistance = std::numeric_limits<float>::max();
auto& itemBounds = input;
auto itemID = findNearestItem(renderContext, itemBounds, minIsectDistance);
if (render::Item::isValidID(itemID)) {
output.emplace_back(itemID);
}
}
}
render::ItemID PickItemsJob::findNearestItem(const render::RenderContextPointer& renderContext, const render::ItemBounds& inputs, float& minIsectDistance) const {
const glm::vec3 rayOrigin = renderContext->args->getViewFrustum().getPosition();
const glm::vec3 rayDirection = renderContext->args->getViewFrustum().getDirection();
BoxFace face;
glm::vec3 normal;
float isectDistance;
render::ItemID nearestItem = render::Item::INVALID_ITEM_ID;
const float minDistance = 1.f;
const float maxDistance = 50.f;
for (const auto& itemBound : inputs) {
if (!itemBound.bound.contains(rayOrigin) && itemBound.bound.findRayIntersection(rayOrigin, rayDirection, isectDistance, face, normal)) {
auto& item = renderContext->_scene->getItem(itemBound.id);
if (item.getKey().isWorldSpace() && isectDistance>minDistance && isectDistance < minIsectDistance && isectDistance<maxDistance) {
nearestItem = itemBound.id;
minIsectDistance = isectDistance;
}
}
}
return nearestItem;
}

53
libraries/render-utils/src/PickItemsJob.h Normal file
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//
// PickItemsJob.h
// render-utils/src/
//
// Created by Olivier Prat on 08/08/17.
// Copyright 2017 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
//
#ifndef hifi_render_utils_PickItemsJob_h
#define hifi_render_utils_PickItemsJob_h
#include <render/Engine.h>
class PickItemsConfig : public render::Job::Config {
Q_OBJECT
Q_PROPERTY(bool isEnabled MEMBER isEnabled NOTIFY dirty)
public:
bool isEnabled{ false };
signals:
void dirty();
};
class PickItemsJob {
public:
using Config = PickItemsConfig;
using Input = render::ItemBounds;
using Output = render::ItemBounds;
using JobModel = render::Job::ModelIO<PickItemsJob, Input, Output, Config>;
PickItemsJob() {}
void configure(const Config& config);
void run(const render::RenderContextPointer& renderContext, const PickItemsJob::Input& input, PickItemsJob::Output& output);
private:
bool _isEnabled{ false };
render::ItemID findNearestItem(const render::RenderContextPointer& renderContext, const render::ItemBounds& inputs, float& minIsectDistance) const;
};
#endif // hifi_render_utils_PickItemsJob_h