/* Copyright (C) 2003-2007 by Peter Eastman
This program is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details. */
package artofillusion;
import artofillusion.math.*;
import artofillusion.object.*;
import artofillusion.texture.*;
import artofillusion.ui.*;
import buoy.event.*;
import java.awt.*;
/** CreateVertexTool is an EditingTool used for adding vertices to triangle meshes. */
public class CreateVertexTool extends MeshEditingTool
{
private Point clickPoint;
private Vec3 clickPos, constrainDir;
private int target;
private int vertexToMove;
public CreateVertexTool(EditingWindow fr, MeshEditController controller)
{
super(fr, controller);
initButton("createVertex");
}
public void activate()
{
super.activate();
setHelpText();
}
/**
* Set the help text based on the current selection mode.
*/
private void setHelpText()
{
int mode = controller.getSelectionMode();
if (mode == MeshEditController.POINT_MODE)
theWindow.setHelpText(Translate.text("createVertexTool.helpText.point"));
else if (mode == MeshEditController.EDGE_MODE)
theWindow.setHelpText(Translate.text("createVertexTool.helpText.edge"));
else
theWindow.setHelpText(Translate.text("createVertexTool.helpText.face"));
}
public int whichClicks()
{
return ALL_CLICKS;
}
public String getToolTipText()
{
return Translate.text("createVertexTool.tipText");
}
public void mousePressed(WidgetMouseEvent e, ViewerCanvas view)
{
TriMeshViewer tmv = (TriMeshViewer) view;
TriangleMesh mesh = (TriangleMesh) controller.getObject().getObject();
MeshVertex vert[] = mesh.getVertices();
int mode = controller.getSelectionMode();
Vec3 uvw = new Vec3();
clickPoint = e.getPoint();
target = tmv.findClickTarget(clickPoint, uvw);
if (target == -1)
return;
theWindow.setUndoRecord(new UndoRecord(theWindow, false, UndoRecord.COPY_OBJECT, new Object [] {mesh, mesh.duplicate()}));
if (mode == MeshEditController.POINT_MODE)
{
// Create a new vertex if this is a boundary vertex. Otherwise, just move it.
constrainDir = mesh.getNormals()[target];
if (createBoundaryVertex(mesh))
{
vertexToMove = mesh.getVertices().length-1;
controller.setMesh(mesh);
controller.objectChanged();
theWindow.updateImage();
theWindow.updateMenus();
}
else
vertexToMove = target;
clickPos = mesh.getVertices()[vertexToMove].r;
}
else
{
boolean[] split;
TriangleMesh newmesh = null;
if (mode == MeshEditController.EDGE_MODE)
{
// Subdivide an edge.
TriangleMesh.Edge edge[] = mesh.getEdges();
Vec3 v1 = vert[edge[target].v1].r;
Vec3 v2 = vert[edge[target].v2].r;
clickPos = v1.times(uvw.x).plus(v2.times(uvw.y));
split = new boolean[edge.length];
split[target] = true;
newmesh = TriangleMesh.subdivideLinear(mesh, split);
constrainDir = v1.minus(v2);
constrainDir.normalize();
}
else if (mode == MeshEditController.FACE_MODE)
{
// Subdivide a face.
TriangleMesh.Face face[] = mesh.getFaces();
Vec3 v1 = vert[face[target].v1].r;
Vec3 v2 = vert[face[target].v2].r;
Vec3 v3 = vert[face[target].v3].r;
clickPos = v1.times(uvw.x).plus(v2.times(uvw.y)).plus(v3.times(uvw.z));
split = new boolean[face.length];
split[target] = true;
newmesh = TriangleMesh.subdivideFaces(mesh, split);
constrainDir = v1.minus(v2).cross(v3.minus(v2));
constrainDir.normalize();
}
vertexToMove = newmesh.getVertices().length-1;
newmesh.getVertices()[vertexToMove].r.set(clickPos);
mesh.copyObject(newmesh);
controller.setMesh(mesh);
controller.objectChanged();
theWindow.updateImage();
theWindow.updateMenus();
}
}
public void mouseDragged(WidgetMouseEvent e, ViewerCanvas view)
{
if (target == -1)
return;
TriMeshViewer tmv = (TriMeshViewer) view;
TriangleMesh mesh = (TriangleMesh) controller.getObject().getObject();
Point dragPoint = e.getPoint();
Vec3 v[], drag;
int dx, dy;
dx = dragPoint.x - clickPoint.x;
dy = dragPoint.y - clickPoint.y;
drag = findDragVector(dx, dy, tmv, e.isShiftDown());
v = findDraggedPositions(mesh, drag);
mesh.setVertexPositions(v);
controller.objectChanged();
theWindow.updateImage();
}
public void mouseReleased(WidgetMouseEvent e, ViewerCanvas view)
{
if (target == -1)
return;
TriMeshViewer tmv = (TriMeshViewer) view;
Object3D meshobj = controller.getObject().getObject();
TriangleMesh mesh = (TriangleMesh) meshobj;
Point dragPoint = e.getPoint();
int dx, dy;
Vec3 v[], drag;
dx = dragPoint.x - clickPoint.x;
dy = dragPoint.y - clickPoint.y;
drag = findDragVector(dx, dy, tmv, e.isShiftDown());
v = findDraggedPositions(mesh, drag);
mesh.setVertexPositions(v);
controller.objectChanged();
theWindow.updateImage();
setHelpText();
}
/**
* Return the new positions of every vertex.
*/
private Vec3 [] findDraggedPositions(TriangleMesh mesh, Vec3 drag)
{
MeshVertex vert[] = mesh.getVertices();
Vec3 pos[] = new Vec3 [vert.length];
for (int i = 0; i < pos.length; i++)
pos[i] = vert[i].r;
pos[vertexToMove] = clickPos.plus(drag);
return pos;
}
/**
* Find the displacement vector for the vertex being dragged.
*/
private Vec3 findDragVector(int dx, int dy, TriMeshViewer view, boolean constrain)
{
Vec3 drag = view.getCamera().findDragVector(clickPos, dx, dy);
if (constrain)
{
if (controller.getSelectionMode() == MeshEditController.EDGE_MODE)
drag = constrainDir.times(drag.dot(constrainDir));
else
drag.subtract(constrainDir.times(drag.dot(constrainDir)));
}
return drag;
}
/**
* Try to create a new vertex when a boundary vertex is dragged. Returns true if a new vertex was
* created, false otherwise.
*/
private boolean createBoundaryVertex(TriangleMesh mesh)
{
TriangleMesh.Vertex vert[] = (TriangleMesh.Vertex []) mesh.getVertices();
TriangleMesh.Vertex v = (TriangleMesh.Vertex) vert[target];
TriangleMesh.Edge edge[] = mesh.getEdges();
TriangleMesh.Face face[] = mesh.getFaces();
int vertEdge[] = v.getEdges();
if (edge[vertEdge[0]].f2 != -1)
return false;
theWindow.setUndoRecord(new UndoRecord(theWindow, false, UndoRecord.COPY_OBJECT, new Object [] {mesh, mesh.duplicate()}));
// Create a new vertex and two new faces.
TriangleMesh.Vertex newvert[] = new TriangleMesh.Vertex [vert.length+1];
int newface[][] = new int [face.length+2][];
for (int i = 0; i < vert.length; i++)
newvert[i] = vert[i];
newvert[vert.length] = mesh.new Vertex(v);
for (int i = 0; i < face.length; i++)
newface[i] = new int [] {face[i].v1, face[i].v2, face[i].v3};
TriangleMesh.Edge e = edge[vertEdge[0]];
TriangleMesh.Face f = face[e.f1];
int oldFace1 = e.f1;
if ((f.v1 == e.v1 && f.v2 == e.v2) || (f.v2 == e.v1 && f.v3 == e.v2) || (f.v3 == e.v1 && f.v1 == e.v2))
newface[face.length] = new int [] {e.v2, e.v1, vert.length};
else
newface[face.length] = new int [] {e.v1, e.v2, vert.length};
e = edge[vertEdge[vertEdge.length-1]];
f = face[e.f1];
int oldFace2 = e.f1;
if ((f.v1 == e.v1 && f.v2 == e.v2) || (f.v2 == e.v1 && f.v3 == e.v2) || (f.v3 == e.v1 && f.v1 == e.v2))
newface[face.length+1] = new int [] {e.v2, e.v1, vert.length};
else
newface[face.length+1] = new int [] {e.v1, e.v2, vert.length};
mesh.setShape(newvert, newface);
// Copy over the edge smoothness values.
TriangleMesh.Edge newedge[] = mesh.getEdges();
for (int i = 0; i < newedge.length; i++)
for (int j = 0; j < edge.length; j++)
if ((newedge[i].v1 == edge[j].v1 && newedge[i].v2 == edge[j].v2) || (newedge[i].v1 == edge[j].v2 && newedge[i].v2 == edge[j].v1))
newedge[i].smoothness = edge[j].smoothness;
// Update the parameter values.
TextureParameter param[] = mesh.getParameters();
ParameterValue paramValue[] = mesh.getParameterValues();
for (int i = 0; i < paramValue.length; i++)
{
if (paramValue[i] instanceof VertexParameterValue)
{
double val[] = ((VertexParameterValue) paramValue[i]).getValue();
double newval[] = new double [newvert.length];
System.arraycopy(val, 0, newval, 0, val.length);
newval[val.length] = val[target];
((VertexParameterValue) paramValue[i]).setValue(newval);
}
if (paramValue[i] instanceof FaceParameterValue)
{
double val[] = ((FaceParameterValue) paramValue[i]).getValue();
double newval[] = new double [newface.length];
System.arraycopy(val, 0, newval, 0, val.length);
newval[val.length] = val[oldFace1];
newval[val.length+1] = val[oldFace2];
((FaceParameterValue) paramValue[i]).setValue(newval);
}
if (paramValue[i] instanceof FaceVertexParameterValue)
{
FaceVertexParameterValue fvpv = (FaceVertexParameterValue) paramValue[i];
double newval[][] = new double [newface.length][3];
for (int index = 0; index < newval.length; index++)
{
newval[index][0] = fvpv.getValue(index, 0);
newval[index][1] = fvpv.getValue(index, 1);
newval[index][2] = fvpv.getValue(index, 2);
}
newval[face.length][0] = newval[face.length][1] = newval[face.length][2] = param[i].defaultVal;
newval[face.length+1][0] = newval[face.length+1][1] = newval[face.length+1][2] = param[i].defaultVal;
fvpv.setValue(newval);
}
}
return true;
}
}
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