7d80052dae
This is a pixel accurate implementation of picking. Picking queries can be created on view, and upon completion a user provided callback is called with the Entity of the renderable at the queried coordinates in the viewport. Picking queries typically have 1 or 2 frame of latency and may impact performance on some drivers. It is mostly intended for use by editors, or when latency is not a major concern. This api should not be used for dragging/moving objects, it is intended for initial picking only. Picking is implemented in the structure pass. The depth buffer value is retrieved and the fragment coordinate is reconstructed and passed to PickingQueryResult. This can be used in turn to calculate the view and/or world space position.
95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <jni.h>
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#include "common/CallbackUtils.h"
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#include "common/NioUtils.h"
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#include <filament/Engine.h>
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struct CallbackJni {
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#ifdef ANDROID
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jclass handlerClass = nullptr;
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jmethodID post = nullptr;
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#endif
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jclass executorClass = nullptr;
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jmethodID execute = nullptr;
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};
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void acquireCallbackJni(JNIEnv* env, CallbackJni& callbackUtils);
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void releaseCallbackJni(JNIEnv* env, CallbackJni callbackUtils, jobject handler, jobject callback);
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struct JniBufferCallback {
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static JniBufferCallback* make(filament::Engine* engine,
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JNIEnv* env, jobject handler, jobject callback, AutoBuffer&& buffer);
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static void invoke(void* buffer, size_t n, void* user);
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private:
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JniBufferCallback(JNIEnv* env, jobject handler, jobject callback, AutoBuffer&& buffer);
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JniBufferCallback(JniBufferCallback const &) = delete;
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JniBufferCallback(JniBufferCallback&&) = delete;
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~JniBufferCallback();
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JNIEnv* mEnv;
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jobject mHandler;
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jobject mCallback;
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AutoBuffer mBuffer;
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CallbackJni mCallbackUtils;
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};
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struct JniImageCallback {
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static JniImageCallback* make(filament::Engine* engine, JNIEnv* env, jobject handler,
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jobject runnable, long image);
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static void invoke(void* image, void* user);
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private:
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JniImageCallback(JNIEnv* env, jobject handler, jobject runnable, long image);
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JniImageCallback(JniImageCallback const &) = delete;
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JniImageCallback(JniImageCallback&&) = delete;
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~JniImageCallback();
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JNIEnv* mEnv;
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jobject mHandler;
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jobject mCallback;
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long mImage;
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CallbackJni mCallbackUtils;
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};
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struct JniCallback {
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static JniCallback* make(JNIEnv* env, jobject handler, jobject runnable);
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static void invoke(void* user);
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jobject getCallbackObject() { return mCallback; }
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JNIEnv* getJniEnv() { return mEnv; }
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private:
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JniCallback(JNIEnv* env, jobject handler, jobject runnable);
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JniCallback(JniCallback const &) = delete;
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JniCallback(JniCallback&&) = delete;
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~JniCallback();
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JNIEnv* mEnv;
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jobject mHandler;
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jobject mCallback;
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CallbackJni mCallbackUtils;
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};
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