/* Copyright (c) 2019 FIRST. All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted (subject to the limitations in the disclaimer below) provided that * the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, this * list of conditions and the following disclaimer in the documentation and/or * other materials provided with the distribution. * * Neither the name of FIRST nor the names of its contributors may be used to endorse or * promote products derived from this software without specific prior written permission. * * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS * LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.firstinspires.ftc.robotcontroller.external.samples; import com.qualcomm.robotcore.eventloop.opmode.Disabled; import com.qualcomm.robotcore.eventloop.opmode.LinearOpMode; import com.qualcomm.robotcore.eventloop.opmode.TeleOp; import org.firstinspires.ftc.robotcore.external.ClassFactory; import org.firstinspires.ftc.robotcore.external.hardware.camera.WebcamName; import org.firstinspires.ftc.robotcore.external.matrices.OpenGLMatrix; import org.firstinspires.ftc.robotcore.external.matrices.VectorF; import org.firstinspires.ftc.robotcore.external.navigation.Orientation; import org.firstinspires.ftc.robotcore.external.navigation.VuforiaLocalizer; import org.firstinspires.ftc.robotcore.external.navigation.VuforiaTrackable; import org.firstinspires.ftc.robotcore.external.navigation.VuforiaTrackableDefaultListener; import org.firstinspires.ftc.robotcore.external.navigation.VuforiaTrackables; import java.util.ArrayList; import java.util.List; import static org.firstinspires.ftc.robotcore.external.navigation.AngleUnit.DEGREES; import static org.firstinspires.ftc.robotcore.external.navigation.AxesOrder.XYZ; import static org.firstinspires.ftc.robotcore.external.navigation.AxesOrder.XZY; import static org.firstinspires.ftc.robotcore.external.navigation.AxesReference.EXTRINSIC; /** * This 2020-2021 OpMode illustrates the basics of using the Vuforia localizer to determine * positioning and orientation of robot on the ULTIMATE GOAL FTC field. * The code is structured as a LinearOpMode * * When images are located, Vuforia is able to determine the position and orientation of the * image relative to the camera. This sample code then combines that information with a * knowledge of where the target images are on the field, to determine the location of the camera. * * From the Audience perspective, the Red Alliance station is on the right and the * Blue Alliance Station is on the left. * There are a total of five image targets for the ULTIMATE GOAL game. * Three of the targets are placed in the center of the Red Alliance, Audience (Front), * and Blue Alliance perimeter walls. * Two additional targets are placed on the perimeter wall, one in front of each Tower Goal. * Refer to the Field Setup manual for more specific location details * * A final calculation then uses the location of the camera on the robot to determine the * robot's location and orientation on the field. * * @see VuforiaLocalizer * @see VuforiaTrackableDefaultListener * see ultimategoal/doc/tutorial/FTC_FieldCoordinateSystemDefinition.pdf * * Use Android Studio to Copy this Class, and Paste it into your team's code folder with a new name. * Remove or comment out the @Disabled line to add this opmode to the Driver Station OpMode list. * * IMPORTANT: In order to use this OpMode, you need to obtain your own Vuforia license key as * is explained below. */ @TeleOp(name="ULTIMATEGOAL Vuforia Nav Webcam", group ="Concept") @Disabled public class ConceptVuforiaUltimateGoalNavigationWebcam extends LinearOpMode { /* * IMPORTANT: You need to obtain your own license key to use Vuforia. The string below with which * 'parameters.vuforiaLicenseKey' is initialized is for illustration only, and will not function. * A Vuforia 'Development' license key, can be obtained free of charge from the Vuforia developer * web site at https://developer.vuforia.com/license-manager. * * Vuforia license keys are always 380 characters long, and look as if they contain mostly * random data. As an example, here is a example of a fragment of a valid key: * ... yIgIzTqZ4mWjk9wd3cZO9T1axEqzuhxoGlfOOI2dRzKS4T0hQ8kT ... * Once you've obtained a license key, copy the string from the Vuforia web site * and paste it in to your code on the next line, between the double quotes. */ private static final String VUFORIA_KEY = " --- YOUR NEW VUFORIA KEY GOES HERE --- "; // Since ImageTarget trackables use mm to specifiy their dimensions, we must use mm for all the physical dimension. // We will define some constants and conversions here private static final float mmPerInch = 25.4f; private static final float mmTargetHeight = (6) * mmPerInch; // the height of the center of the target image above the floor // Constants for perimeter targets private static final float halfField = 72 * mmPerInch; private static final float quadField = 36 * mmPerInch; // Class Members private OpenGLMatrix lastLocation = null; private VuforiaLocalizer vuforia = null; /** * This is the webcam we are to use. As with other hardware devices such as motors and * servos, this device is identified using the robot configuration tool in the FTC application. */ WebcamName webcamName = null; private boolean targetVisible = false; private float phoneXRotate = 0; private float phoneYRotate = 0; private float phoneZRotate = 0; @Override public void runOpMode() { /* * Retrieve the camera we are to use. */ webcamName = hardwareMap.get(WebcamName.class, "Webcam 1"); /* * Configure Vuforia by creating a Parameter object, and passing it to the Vuforia engine. * We can pass Vuforia the handle to a camera preview resource (on the RC screen); * If no camera monitor is desired, use the parameter-less constructor instead (commented out below). * Note: A preview window is required if you want to view the camera stream on the Driver Station Phone. */ int cameraMonitorViewId = hardwareMap.appContext.getResources().getIdentifier("cameraMonitorViewId", "id", hardwareMap.appContext.getPackageName()); VuforiaLocalizer.Parameters parameters = new VuforiaLocalizer.Parameters(cameraMonitorViewId); // VuforiaLocalizer.Parameters parameters = new VuforiaLocalizer.Parameters(); parameters.vuforiaLicenseKey = VUFORIA_KEY; /** * We also indicate which camera on the RC we wish to use. */ parameters.cameraName = webcamName; // Make sure extended tracking is disabled for this example. parameters.useExtendedTracking = false; // Instantiate the Vuforia engine vuforia = ClassFactory.getInstance().createVuforia(parameters); // Load the data sets for the trackable objects. These particular data // sets are stored in the 'assets' part of our application. VuforiaTrackables targetsUltimateGoal = this.vuforia.loadTrackablesFromAsset("UltimateGoal"); VuforiaTrackable blueTowerGoalTarget = targetsUltimateGoal.get(0); blueTowerGoalTarget.setName("Blue Tower Goal Target"); VuforiaTrackable redTowerGoalTarget = targetsUltimateGoal.get(1); redTowerGoalTarget.setName("Red Tower Goal Target"); VuforiaTrackable redAllianceTarget = targetsUltimateGoal.get(2); redAllianceTarget.setName("Red Alliance Target"); VuforiaTrackable blueAllianceTarget = targetsUltimateGoal.get(3); blueAllianceTarget.setName("Blue Alliance Target"); VuforiaTrackable frontWallTarget = targetsUltimateGoal.get(4); frontWallTarget.setName("Front Wall Target"); // For convenience, gather together all the trackable objects in one easily-iterable collection */ List allTrackables = new ArrayList(); allTrackables.addAll(targetsUltimateGoal); /** * In order for localization to work, we need to tell the system where each target is on the field, and * where the phone resides on the robot. These specifications are in the form of transformation matrices. * Transformation matrices are a central, important concept in the math here involved in localization. * See Transformation Matrix * for detailed information. Commonly, you'll encounter transformation matrices as instances * of the {@link OpenGLMatrix} class. * * If you are standing in the Red Alliance Station looking towards the center of the field, * - The X axis runs from your left to the right. (positive from the center to the right) * - The Y axis runs from the Red Alliance Station towards the other side of the field * where the Blue Alliance Station is. (Positive is from the center, towards the BlueAlliance station) * - The Z axis runs from the floor, upwards towards the ceiling. (Positive is above the floor) * * Before being transformed, each target image is conceptually located at the origin of the field's * coordinate system (the center of the field), facing up. */ //Set the position of the perimeter targets with relation to origin (center of field) redAllianceTarget.setLocation(OpenGLMatrix .translation(0, -halfField, mmTargetHeight) .multiplied(Orientation.getRotationMatrix(EXTRINSIC, XYZ, DEGREES, 90, 0, 180))); blueAllianceTarget.setLocation(OpenGLMatrix .translation(0, halfField, mmTargetHeight) .multiplied(Orientation.getRotationMatrix(EXTRINSIC, XYZ, DEGREES, 90, 0, 0))); frontWallTarget.setLocation(OpenGLMatrix .translation(-halfField, 0, mmTargetHeight) .multiplied(Orientation.getRotationMatrix(EXTRINSIC, XYZ, DEGREES, 90, 0, 90))); // The tower goal targets are located a quarter field length from the ends of the back perimeter wall. blueTowerGoalTarget.setLocation(OpenGLMatrix .translation(halfField, quadField, mmTargetHeight) .multiplied(Orientation.getRotationMatrix(EXTRINSIC, XYZ, DEGREES, 90, 0, -90))); redTowerGoalTarget.setLocation(OpenGLMatrix .translation(halfField, -quadField, mmTargetHeight) .multiplied(Orientation.getRotationMatrix(EXTRINSIC, XYZ, DEGREES, 90, 0, -90))); // // Create a transformation matrix describing where the phone is on the robot. // // Info: The coordinate frame for the robot looks the same as the field. // The robot's "forward" direction is facing out along X axis, with the LEFT side facing out along the Y axis. // Z is UP on the robot. This equates to a bearing angle of Zero degrees. // // For a WebCam, the default starting orientation of the camera is looking UP (pointing in the Z direction), // with the wide (horizontal) axis of the camera aligned with the X axis, and // the Narrow (vertical) axis of the camera aligned with the Y axis // // But, this example assumes that the camera is actually facing forward out the front of the robot. // So, the "default" camera position requires two rotations to get it oriented correctly. // 1) First it must be rotated +90 degrees around the X axis to get it horizontal (it's now facing out the right side of the robot) // 2) Next it must be be rotated +90 degrees (counter-clockwise) around the Z axis to face forward. // // Finally the camera can be translated to its actual mounting position on the robot. // In this example, it is centered (left to right), but 4" forward of the middle of the robot, and 8" above ground level. final float CAMERA_FORWARD_DISPLACEMENT = 4.0f * mmPerInch; // eg: Camera is 4 Inches in front of robot-center final float CAMERA_VERTICAL_DISPLACEMENT = 8.0f * mmPerInch; // eg: Camera is 8 Inches above ground final float CAMERA_LEFT_DISPLACEMENT = 0; // eg: Camera is ON the robot's center line OpenGLMatrix cameraLocationOnRobot = OpenGLMatrix .translation(CAMERA_FORWARD_DISPLACEMENT, CAMERA_LEFT_DISPLACEMENT, CAMERA_VERTICAL_DISPLACEMENT) .multiplied(Orientation.getRotationMatrix(EXTRINSIC, XZY, DEGREES, 90, 90, 0)); /** Let all the trackable listeners know where the phone is. */ for (VuforiaTrackable trackable : allTrackables) { ((VuforiaTrackableDefaultListener) trackable.getListener()).setCameraLocationOnRobot(parameters.cameraName, cameraLocationOnRobot); } // WARNING: // In this sample, we do not wait for PLAY to be pressed. Target Tracking is started immediately when INIT is pressed. // This sequence is used to enable the new remote DS Camera Preview feature to be used with this sample. // CONSEQUENTLY do not put any driving commands in this loop. // To restore the normal opmode structure, just un-comment the following line: // waitForStart(); // Note: To use the remote camera preview: // AFTER you hit Init on the Driver Station, use the "options menu" to select "Camera Stream" // Tap the preview window to receive a fresh image. targetsUltimateGoal.activate(); while (!isStopRequested()) { // check all the trackable targets to see which one (if any) is visible. targetVisible = false; for (VuforiaTrackable trackable : allTrackables) { if (((VuforiaTrackableDefaultListener)trackable.getListener()).isVisible()) { telemetry.addData("Visible Target", trackable.getName()); targetVisible = true; // getUpdatedRobotLocation() will return null if no new information is available since // the last time that call was made, or if the trackable is not currently visible. OpenGLMatrix robotLocationTransform = ((VuforiaTrackableDefaultListener)trackable.getListener()).getUpdatedRobotLocation(); if (robotLocationTransform != null) { lastLocation = robotLocationTransform; } break; } } // Provide feedback as to where the robot is located (if we know). if (targetVisible) { // express position (translation) of robot in inches. VectorF translation = lastLocation.getTranslation(); telemetry.addData("Pos (in)", "{X, Y, Z} = %.1f, %.1f, %.1f", translation.get(0) / mmPerInch, translation.get(1) / mmPerInch, translation.get(2) / mmPerInch); // express the rotation of the robot in degrees. Orientation rotation = Orientation.getOrientation(lastLocation, EXTRINSIC, XYZ, DEGREES); telemetry.addData("Rot (deg)", "{Roll, Pitch, Heading} = %.0f, %.0f, %.0f", rotation.firstAngle, rotation.secondAngle, rotation.thirdAngle); } else { telemetry.addData("Visible Target", "none"); } telemetry.update(); } // Disable Tracking when we are done; targetsUltimateGoal.deactivate(); } }