Examples with MyPoint3D geometry.MyPoint3D used on opensource projects

Example 1 with MyPoint3D

use of geometry.MyPoint3D in project facetmodeller by pglelievre.

the class SessionLoader method loadSessionAscii2.

private static boolean loadSessionAscii2(FacetModeller controller, File file, boolean merge) {
    int loadVersion = 2;
    // We will be constructing some new objects as we read the file:
    PLC plc = new PLC();
    SectionVector sections = new SectionVector();
    GroupVector groups = new GroupVector();
    // We will be saving some information to set later:
    int ndim;
    // these colours will be overwritten
    Color calibrationColor = Color.CYAN;
    Color edgeColor = Color.BLACK;
    Color defineFacetEdgeColor = Color.WHITE;
    int pointWidth = 5;
    int lineWidth = 1;
    // Open the file for reading:
    BufferedReader reader = FileUtils.openForReading(file);
    if (reader == null) {
        return false;
    }
    // Put everything below in an infinite loop that we can break out of when something goes wrong:
    boolean ok = true;
    while (true) {
        // Read the floored version number:
        String textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        textLine = textLine.trim();
        String[] ss = textLine.split("[ ]+", 2);
        int version;
        try {
            // converts to integer
            version = Integer.parseInt(ss[0].trim());
        } catch (NumberFormatException e) {
            ok = false;
            break;
        }
        if (!ok) {
            break;
        }
        // Check the version number:
        if (version != loadVersion) {
            // Close the file:
            FileUtils.close(reader);
            // Return unsuccessfully:
            return false;
        }
        // Read the number of dimensions, nodes, facets, regions, samples and groups:
        textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        int nnodes, nregions, nfacets, nsections, ngroups;
        textLine = textLine.trim();
        ss = textLine.split("[ ]+", 7);
        try {
            // converts to integer
            ndim = Integer.parseInt(ss[0].trim());
            // converts to integer
            nnodes = Integer.parseInt(ss[1].trim());
            // converts to integer
            nfacets = Integer.parseInt(ss[2].trim());
            // converts to integer
            nregions = Integer.parseInt(ss[3].trim());
            // converts to integer
            nsections = Integer.parseInt(ss[4].trim());
            // converts to integer
            ngroups = Integer.parseInt(ss[5].trim());
        } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
            ok = false;
            break;
        }
        if (!ok) {
            break;
        }
        // Check ndim:
        if (ndim != controller.numberOfDimensions()) {
            ok = false;
            break;
        }
        // Loop over each node:
        for (int i = 0; i < nnodes; i++) {
            // Read the coordinates of the ith node:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            boolean isTopo;
            // initialization of z is needed to avoid compiler warning
            double x, y, z = 0.0;
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 4);
            try {
                isTopo = Boolean.parseBoolean(ss[0].trim());
                // converts to Double
                x = Double.parseDouble(ss[1].trim());
                // converts to Double
                y = Double.parseDouble(ss[2].trim());
                if (isTopo) {
                    z = Double.parseDouble(ss[3].trim());
                }
            } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                ok = false;
                break;
            }
            if (!ok) {
                break;
            }
            // Add a new node to the plc:
            if (isTopo) {
                plc.addNode(new NodeOffSection(x, y, z));
            } else {
                plc.addNode(new NodeOnSection(x, y));
            }
        // section and group membership will be added later
        }
        if (!ok) {
            break;
        }
        // Loop over each facet:
        for (int i = 0; i < nfacets; i++) {
            // Add a new empty facet to the plc (these facets are filled later):
            plc.addFacet(new Facet());
        }
        // Loop over each region:
        for (int i = 0; i < nregions; i++) {
            // Read the coordinates of the ith region and the isControl information:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            double x, y;
            boolean isCon;
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 4);
            // Try parsing coordinates (must be able to do this):
            try {
                // converts to Double
                x = Double.parseDouble(ss[0].trim());
                // converts to Double
                y = Double.parseDouble(ss[1].trim());
            } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                ok = false;
                break;
            }
            if (!ok) {
                break;
            }
            // Check for iscontrol information:
            if (ss.length < 3) {
                isCon = false;
            } else {
                if (ss[2].trim().isEmpty()) {
                    // missing from file (old version of session saver was used)
                    isCon = false;
                } else {
                    // converts to Boolean
                    isCon = Boolean.parseBoolean(ss[2].trim());
                }
            }
            // Add a new region to the plc:
            // section and group membership will be added later
            plc.addRegion(new Region(isCon, x, y));
        }
        if (!ok) {
            break;
        }
        for (int i = 0; i < nsections; i++) {
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            int sectionType;
            try {
                sectionType = Integer.parseInt(textLine);
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            if (!ok) {
                break;
            }
            Section section = null;
            switch(sectionType) {
                case 1:
                    // Read the file name:
                    textLine = FileUtils.readLine(reader);
                    if (textLine == null) {
                        ok = false;
                        break;
                    }
                    textLine = textLine.trim();
                    File imageFile;
                    if (textLine.startsWith("null")) {
                        imageFile = null;
                    } else {
                        try {
                            URI uri = new URI(textLine);
                            // image file or .node file
                            imageFile = new File(uri);
                        } catch (URISyntaxException e) {
                            ok = false;
                            break;
                        }
                    }
                    // Make a new HasImage object associated with the file:
                    section = new ImageCrossSection(imageFile);
                    break;
                case 3:
                    // Read the section name:
                    textLine = FileUtils.readLine(reader);
                    if (textLine == null) {
                        ok = false;
                        break;
                    }
                    String name = textLine.trim();
                    // Read the image height:
                    textLine = FileUtils.readLine(reader);
                    if (textLine == null) {
                        ok = false;
                        break;
                    }
                    textLine = textLine.trim();
                    int height;
                    try {
                        height = Integer.parseInt(textLine);
                    } catch (NumberFormatException e) {
                        ok = false;
                        break;
                    }
                    // Read the image color:
                    Color color;
                    try {
                        // parse from RGB string
                        color = new Color(Integer.parseInt(textLine.trim()));
                    } catch (NumberFormatException e) {
                        ok = false;
                        break;
                    }
                    section = new NoImageCrossSection(name, color);
                    break;
                case 2:
                    File nodeFile = null;
                    File eleFile = null;
                    // Read the node file name:
                    textLine = FileUtils.readLine(reader);
                    if (textLine == null) {
                        ok = false;
                        break;
                    }
                    textLine = textLine.trim();
                    if (textLine.startsWith("null")) {
                        nodeFile = null;
                    } else {
                        URI uri = null;
                        try {
                            uri = new URI(textLine);
                        } catch (URISyntaxException e) {
                            ok = false;
                        }
                        if (!ok) {
                            break;
                        }
                        try {
                            // image file or .node file
                            nodeFile = new File(uri);
                        } catch (IllegalArgumentException e) {
                            ok = false;
                        }
                    }
                    if (!ok) {
                        break;
                    }
                    // Read the ele file name:
                    textLine = FileUtils.readLine(reader);
                    if (textLine == null) {
                        ok = false;
                        break;
                    }
                    textLine = textLine.trim();
                    if (textLine.startsWith("null")) {
                        eleFile = null;
                    } else {
                        try {
                            URI uri = new URI(textLine);
                            // image file or .node file
                            eleFile = new File(uri);
                        } catch (URISyntaxException e) {
                            ok = false;
                        }
                    }
                    if (!ok) {
                        break;
                    }
                    // formerly a TopoSection
                    section = new NoImageDepthSection(nodeFile, eleFile);
                    break;
                default:
                    ok = false;
                    break;
            }
            if (!ok) {
                break;
            }
            if (section == null) {
                ok = false;
                break;
            }
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 2);
            Dir3D sliceDirection;
            try {
                // converts to integer
                int idir = Integer.parseInt(ss[0].trim());
                sliceDirection = Dir3D.fromInt(idir);
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            if (!ok) {
                break;
            }
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 2);
            double loc;
            try {
                // converts to Double
                loc = Double.parseDouble(ss[0].trim());
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            if (!ok) {
                break;
            }
            double x, y;
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            if (!textLine.startsWith("null")) {
                ss = textLine.split("[ ]+", 3);
                try {
                    // converts to Double
                    x = Double.parseDouble(ss[0].trim());
                    // converts to Double
                    y = Double.parseDouble(ss[1].trim());
                } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                    ok = false;
                    break;
                }
                if (!ok) {
                    break;
                }
                section.setTyped1(new MyPoint3D(x, y, sliceDirection, loc));
            }
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            if (!textLine.startsWith("null")) {
                ss = textLine.split("[ ]+", 3);
                try {
                    // converts to Double
                    x = Double.parseDouble(ss[0].trim());
                    // converts to Double
                    y = Double.parseDouble(ss[1].trim());
                } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                    ok = false;
                    break;
                }
                if (!ok) {
                    break;
                }
                section.setTyped2(new MyPoint3D(x, y, sliceDirection, loc));
            }
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            if (!textLine.startsWith("null")) {
                ss = textLine.split("[ ]+", 3);
                try {
                    // converts to Double
                    x = Double.parseDouble(ss[0].trim());
                    // converts to Double
                    y = Double.parseDouble(ss[1].trim());
                } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                    ok = false;
                    break;
                }
                if (!ok) {
                    break;
                }
                section.setClicked1(new MyPoint2D(x, y));
            }
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            if (!textLine.startsWith("null")) {
                ss = textLine.split("[ ]+", 3);
                try {
                    // converts to Double
                    x = Double.parseDouble(ss[0].trim());
                    // converts to Double
                    y = Double.parseDouble(ss[1].trim());
                } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                    ok = false;
                    break;
                }
                if (!ok) {
                    break;
                }
                section.setClicked2(new MyPoint2D(x, y));
            }
            sections.add(section);
        }
        if (!ok) {
            break;
        }
        // Loop over each group:
        for (int i = 0; i < ngroups; i++) {
            // Create the group object:
            Group group = new Group();
            // Read the group name:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            group.setName(textLine.trim());
            // Read the group colours:
            Color col;
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            try {
                // parse from RGB string
                col = new Color(Integer.parseInt(textLine.trim()));
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            group.setNodeColor(col);
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            try {
                // parse from RGB string
                col = new Color(Integer.parseInt(textLine.trim()));
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            group.setFacetColor(col);
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            try {
                // parse from RGB string
                col = new Color(Integer.parseInt(textLine.trim()));
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            group.setRegionColor(col);
            // Add the group to the list of groups:
            groups.add(group);
        }
        if (!ok) {
            break;
        }
        // Loop over each node:
        for (int i = 0; i < nnodes; i++) {
            Node node = plc.getNode(i);
            // The node gets linked to the facets in the loop over each facet below.
            // Read the section id and group id:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 3);
            // section and group id
            int sid, gid;
            try {
                // converts to integer
                sid = Integer.parseInt(ss[0].trim());
                // converts to integer
                gid = Integer.parseInt(ss[1].trim());
            } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                ok = false;
                break;
            }
            // Cross-link the node and section:
            node.setSection(sections.get(sid));
            sections.get(sid).addNode(node);
            // Cross-link the node and group:
            node.setGroup(groups.get(gid));
            groups.get(gid).addNode(node);
        }
        if (!ok) {
            break;
        }
        // Loop over each facet:
        for (int i = 0; i < nfacets; i++) {
            Facet facet = plc.getFacet(i);
            // Read the node id's and link those nodes to the facet:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+");
            // number of nodes
            int n;
            try {
                // converts to integer
                n = Integer.parseInt(ss[0].trim());
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            if (!ok) {
                break;
            }
            for (int j = 0; j < n; j++) {
                // node id
                int id;
                try {
                    // converts to integer
                    id = Integer.parseInt(ss[j + 1].trim());
                } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
                    ok = false;
                    break;
                }
                // Cross-link the facet and node:
                facet.addNode(plc.getNode(id));
                plc.getNode(id).addFacet(facet);
            }
            // Read the section id's:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            /*
                textLine = textLine.trim();
                ss = textLine.split("[ ]+");
                try {
                    n = Integer.parseInt(ss[0].trim()); // converts to integer
                } catch (NumberFormatException e) { ok=false; break; }
                if (!ok) { break; }
                for (int j=0 ; j<n ; j++ ) {
                    int id;
                    try {
                        id = Integer.parseInt(ss[j+1].trim()); // converts to integer
                    } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) { ok=false; break; }
                    // Cross-link the facet and section:
//                    facet.addSection( sections.get(id) ); // no longer necessary because facet sections defined by the facet nodes
                    sections.get(id).addFacet(facet);
                }
                */
            // Read the group id:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 2);
            int id;
            try {
                // converts to integer
                id = Integer.parseInt(ss[0].trim());
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            // Cross-link the facet and group:
            facet.setGroup(groups.get(id));
            groups.get(id).addFacet(facet);
        }
        if (!ok) {
            break;
        }
        // Loop over each region:
        for (int i = 0; i < nregions; i++) {
            Region region = plc.getRegion(i);
            // Read the section id:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 2);
            int id;
            try {
                // converts to integer
                id = Integer.parseInt(ss[0].trim());
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            // Cross-link the region and section:
            region.setSection(sections.get(id));
            sections.get(id).addRegion(region);
            // Read the group id and link that group to the node:
            textLine = FileUtils.readLine(reader);
            if (textLine == null) {
                ok = false;
                break;
            }
            textLine = textLine.trim();
            ss = textLine.split("[ ]+", 2);
            try {
                // converts to integer
                id = Integer.parseInt(ss[0].trim());
            } catch (NumberFormatException e) {
                ok = false;
                break;
            }
            // Cross-link the region and group:
            region.setGroup(groups.get(id));
            // groups.get(id).setRegion(region);
            groups.get(id).addRegion(region);
        }
        if (!ok) {
            break;
        }
        // ---------- Finish with the rest of the information: ----------
        // Read painting colours, etc.:
        textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        try {
            // parse from RGB string
            calibrationColor = new Color(Integer.parseInt(textLine.trim()));
        } catch (NumberFormatException e) {
            ok = false;
            break;
        }
        textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        try {
            // parse from RGB string
            edgeColor = new Color(Integer.parseInt(textLine.trim()));
        } catch (NumberFormatException e) {
            ok = false;
            break;
        }
        textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        try {
            // parse from RGB string
            defineFacetEdgeColor = new Color(Integer.parseInt(textLine.trim()));
        } catch (NumberFormatException e) {
            ok = false;
            break;
        }
        textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        try {
            pointWidth = Integer.parseInt(textLine.trim());
        } catch (NumberFormatException e) {
            ok = false;
            break;
        }
        textLine = FileUtils.readLine(reader);
        if (textLine == null) {
            ok = false;
            break;
        }
        try {
            lineWidth = Integer.parseInt(textLine.trim());
        } catch (NumberFormatException e) {
            ok = false;
            break;
        }
        // Always break from while here:
        break;
    }
    // Close the file:
    FileUtils.close(reader);
    // Check for a problem:
    if (!ok) {
        return false;
    }
    // Reset the FacetModeller plc, section lists and group lists:
    controller.resetPLC(plc, merge);
    controller.resetSectionVector(sections, merge);
    controller.resetGroupVector(groups, merge);
    // If it is a large model then don't display anything:
    if (plc.numberOfNodes() >= LARGE_MODEL) {
        controller.clearGroupSelections();
    }
    // Reset some other information:
    if (!merge) {
        controller.setCalibrationColor(calibrationColor);
        controller.setEdgeColor(edgeColor);
        controller.setDefineFacetEdgeColor(defineFacetEdgeColor);
        controller.setPointWidth(pointWidth);
        controller.setLineWidth(lineWidth);
    }
    // Return successfully:
    return true;
}

Example 2 with MyPoint3D

use of geometry.MyPoint3D in project facetmodeller by pglelievre.

the class VOI method getCorners.

public MyPoint3D[] getCorners() {
    // Corners will be placed into an array:
    MyPoint3D[] corners = new MyPoint3D[8];
    corners[0] = new MyPoint3D(x1, y1, z1);
    corners[1] = new MyPoint3D(x2, y1, z1);
    corners[2] = new MyPoint3D(x1, y2, z1);
    corners[3] = new MyPoint3D(x2, y2, z1);
    corners[4] = new MyPoint3D(x1, y1, z2);
    corners[5] = new MyPoint3D(x2, y1, z2);
    corners[6] = new MyPoint3D(x1, y2, z2);
    corners[7] = new MyPoint3D(x2, y2, z2);
    // Return the corners:
    return corners;
}

Example 3 with MyPoint3D

use of geometry.MyPoint3D in project facetmodeller by pglelievre.

the class VOI method getEdges.

public MyPoint3D[][] getEdges() {
    // Edges will be placed into an array:
    MyPoint3D[][] edges = new MyPoint3D[N_EDGES][2];
    // Edges in x direction:
    edges[0][0] = new MyPoint3D(x1, y1, z1);
    edges[0][1] = new MyPoint3D(x2, y1, z1);
    edges[1][0] = new MyPoint3D(x1, y2, z1);
    edges[1][1] = new MyPoint3D(x2, y2, z1);
    edges[2][0] = new MyPoint3D(x1, y1, z2);
    edges[2][1] = new MyPoint3D(x2, y1, z2);
    edges[3][0] = new MyPoint3D(x1, y2, z2);
    edges[3][1] = new MyPoint3D(x2, y2, z2);
    // Edges in y direction:
    edges[4][0] = new MyPoint3D(x1, y1, z1);
    edges[4][1] = new MyPoint3D(x1, y2, z1);
    edges[5][0] = new MyPoint3D(x1, y1, z2);
    edges[5][1] = new MyPoint3D(x1, y2, z2);
    edges[6][0] = new MyPoint3D(x2, y1, z1);
    edges[6][1] = new MyPoint3D(x2, y2, z1);
    edges[7][0] = new MyPoint3D(x2, y1, z2);
    edges[7][1] = new MyPoint3D(x2, y2, z2);
    // Edges in z direction:
    edges[8][0] = new MyPoint3D(x1, y1, z1);
    edges[8][1] = new MyPoint3D(x1, y1, z2);
    edges[9][0] = new MyPoint3D(x2, y1, z1);
    edges[9][1] = new MyPoint3D(x2, y1, z2);
    edges[10][0] = new MyPoint3D(x1, y2, z1);
    edges[10][1] = new MyPoint3D(x1, y2, z2);
    edges[11][0] = new MyPoint3D(x2, y2, z1);
    edges[11][1] = new MyPoint3D(x2, y2, z2);
    // Return the edges:
    return edges;
}

Example 4 with MyPoint3D

use of geometry.MyPoint3D in project facetmodeller by pglelievre.

the class ChangeNodeSectionClickTask method mouseClick.

@Override
public void mouseClick(MyPoint2D p) {
    // Check for the required information:
    if (!check()) {
        return;
    }
    if (p == null) {
        return;
    }
    // Get the current section:
    Section currentSection = controller.getSelectedCurrentSection();
    // Calculate the closest node to the clicked point:
    if (!controller.calculateClosestNode(p)) {
        return;
    }
    // just in case the closestNode object gets nullified by a mouse move (not sure if that is possible but better safe than sorry)
    Node node = controller.getClosestNode();
    if (node == null) {
        return;
    }
    // Check if the node is already a 3D node in the current section:
    if (node.getSection() == currentSection && node.isOff()) {
        return;
    }
    // Nullify temporary objects:
    // (or else the old closest node point will be painted)
    controller.clearClosestNode();
    // Check if node is on or off section (it will be changed to off section regardless):
    if (!node.isOff()) {
        // Ask user for confirmation and calculate 3D point:
        int response = Dialogs.confirm(controller, "The node will be changed to a 3D off-section node.", title());
        if (response != Dialogs.OK_OPTION) {
            return;
        }
    }
    MyPoint3D p3 = node.getPoint3D();
    if (p3 == null) {
        return;
    }
    p3 = p3.deepCopy();
    // Create a new off-section node object:
    Node newNode = new NodeOffSection(p3, currentSection, node.getGroup());
    // Replace the old node with the new node:
    MergeNodesCommand com = new MergeNodesCommand(controller.getModelManager(), node, newNode, title());
    com.execute();
    controller.undoVectorAdd(com);
    // Enable or disable menu items:
    controller.checkItemsEnabled();
    // Repaint:
    controller.redraw();
}

Example 5 with MyPoint3D

use of geometry.MyPoint3D in project facetmodeller by pglelievre.

the class DepthSection method imageToSpace.

/**
 * Transforms from section image pixel coordinates to real-space measurements for a topography slice
 * (horizontal depth-slice, assumed to be in map view with North up, East right).
 * @param p2
 * @return
 */
@Override
public MyPoint3D imageToSpace(MyPoint2D p2) {
    // Check input and calibration:
    if (p2 == null) {
        return null;
    }
    if (!isCalibrated()) {
        return null;
    }
    // Calculate some quantities required for interpolation:
    MyPoint2D v2 = getClicked1().vectorToPoint(getClicked2());
    MyPoint3D v3 = getTyped1().vectorToPoint(getTyped2());
    // x and y vary linearly with horizontal and vertical pixel coordinates respectively:
    double mx = v3.getX() / v2.getX();
    double my = v3.getY() / v2.getY();
    double x = getTyped1().getX() + mx * (p2.getX() - getClicked1().getX());
    double y = getTyped1().getY() + my * (p2.getY() - getClicked1().getY());
    // z is constant across a depth slice:
    double z = getTyped1().getZ();
    // Return a new MyPoint3D object:
    return new MyPoint3D(x, y, z);
}