![](.img/dl.png)
Addon for openFrameworks to use ARCore on Android devices.
This addon is based on the work of HalfdanJ. I added these APIs :
To use the addon, you need the development branch of openFrameworks from github. Follow the Android Studio guide to learn how to get started with openFrameworks and Android.
To add the addon, add ofxARCore
to addons.make
in your project, or through the project generator. Additionally you will need to add the following two lines to the end of settings.gradle
of your project:
// ofApp.h
ofxARCore arcore;
vector<ofMatrix4x4> anchors;
// ofApp.cpp
void ofApp::setup() {
arcore.setup();
}
void ofApp::update() {
anchors.push_back(arcore.getViewMatrix().getInverse());
}
void RafalleApp::draw() {
for (int i = 0; i < anchors.size(); i++) {
ofMatrix4x4 anchor = anchors[i];
ofPushMatrix();
ofMultMatrix(anchor);
ofDrawBox(ofVec3f(0,0,0), 0.05); // Draws a 5cm box at anchor location
ofPopMatrix();
}
ofDisableDepthTest();
}
// ofApp.h
vector<float> point_cloud;
ofVbo vbo_pointcloud;
// ofApp.cpp
void ofApp::setup() {
for(int i = 0; i < point_cloud.size(); i++) {
point_color.push_back(ofColor::red);
}
vbo_pointcloud.setVertexData(&point_cloud[0], 3, 1000, GL_DYNAMIC_DRAW);
vbo_pointcloud.setColorData(&point_color[0], 1000, GL_DYNAMIC_DRAW);
point_color.clear();
}
void ofApp::update() {
point_cloud = arcore->getPointCloud();
if (point_cloud.size() > 1) {
for (int i = 0; i < point_cloud.size(); i++)
point_color.push_back(ofColor::red);
vbo_pointcloud.updateVertexData(&point_cloud[0], (int) point_cloud.size() * 2);
vbo_pointcloud.updateColorData(&point_color[0], (int) point_color.size() * 2);
}
for (int i = 0; i < point_cloud.size(); i+=3) {
ofVec3f pos(point_cloud[i], point_cloud[i+1], point_cloud[i+2]);
points.push_back(pos);
}
}
for (int i = 0; i < points.size(); i+=3) {
ofDrawBox(points[i], 0.01); // Draws a 1cm box at each point of point cloud
}
// ofApp.cpp
void ofApp::draw() {
vector<ofAugmentedImage*> augmented_images = arcore->getImageMatrices();
// draw a box above each detected image
for (int i = 0; i < augmented_images.size(); i++) {
if (augmented_images[i]->is_tracking == true) {
// get AugmentedImage position
ofMatrix4x4 anchor = augmented_images[i]->matrix;
ofPushMatrix();
// translate to AugmentedImage position
ofMultMatrix(anchor);
ofBoxPrimitive box;
// set box dimentions according to arcore image width estimation
box.set(augmented_images[i]->width, 0.01, augmented_images[i]->height);
box.setPosition(0,0,0);
// draw box above the image
box.draw();
ofPopMatrix();
}
}
}
void ofApp::touchDown(int x, int y, int id) {
ofHitPose *hitPose = arcore->getHitPose(x, y);
if (pose != NULL) {
ofMatrix4x4 pose = hitPose->pose;
float distance = hitPose->distance;
// translate to the hit location
ofPushMatrix();
ofMultMatrix(pose);
// draw a box at the hit location
ofDrawBox(0,0,0, 0.1);
}
}
void ofApp::draw() {
vector<ofARPlane*> planes = arcore->getPlanes();
// for each plane
for (int i = 0; i < planes.size(); i++) {
// translate to it's center
ofARPlane *plane= planes[i];
ofPushMatrix();
ofMultMatrix(plane->center);
// draw a red box on it's center
ofSetColor(255,0,0,100);
ofDrawBox(0,0.025,0, 0.2, 0.05, 0.1);
// draw the plane
ofSetColor(0,255,0,100);
plane->mesh.draw();
// draw the path (contours)
ofSetColor(0,0,255,100);
plane->path.draw();
ofPopMatrix();
}
// ofApp.cpp
arcore.getCameraFOV();
// ofApp.cpp
arcore.getDpi();