public override bool canDrawUV()
//
// Description:
// Tells Maya that this surface shape supports uv drawing.
//
{
apiMesh meshNode = (apiMesh)surfaceShape;
apiMeshGeom geom = meshNode.meshGeom();
return(geom.uvcoords.uvcount() > 0);
}
// Main selection routine
//
public override bool select(MSelectInfo selectInfo,
MSelectionList selectionList,
MPointArray worldSpaceSelectPts)
//
// Description:
//
// Main selection routine
//
// Arguments:
//
// selectInfo - the selection state information
// selectionList - the list of selected items to add to
// worldSpaceSelectPts -
//
{
bool selected = false;
bool componentSelected = false;
bool hilited = false;
hilited = (selectInfo.displayStatus == M3dView.DisplayStatus.kHilite);
if (hilited)
{
componentSelected = selectVertices(selectInfo, selectionList,
worldSpaceSelectPts);
selected = selected || componentSelected;
}
if (!selected)
{
apiMesh meshNode = (apiMesh)surfaceShape;
// NOTE: If the geometry has an intersect routine it should
// be called here with the selection ray to determine if the
// the object was selected.
selected = true;
MSelectionMask priorityMask = new MSelectionMask(MSelectionMask.SelectionType.kSelectNurbsSurfaces);
MSelectionList item = new MSelectionList();
item.add(selectInfo.selectPath);
MPoint xformedPt = new MPoint();
if (selectInfo.singleSelection)
{
MPoint center = meshNode.boundingBox().center;
xformedPt = center;
xformedPt.multiplyEqual(selectInfo.selectPath.inclusiveMatrix);
}
selectInfo.addSelection(item, xformedPt, selectionList,
worldSpaceSelectPts, priorityMask, false);
}
return(selected);
}
// Main draw routine for UV editor. This is called by maya when the
// shape is selected and the UV texture window is visible.
//
public override void drawUV(M3dView view, MTextureEditorDrawInfo info)
//
// Description:
// Main entry point for UV drawing. This method is called by the UV
// texture editor when the shape is 'active'.
//
// Input:
// A 3dView.
//
{
apiMesh meshNode = (apiMesh)surfaceShape;
apiMeshGeom geom = meshNode.meshGeom();
uint uv_len = geom.uvcoords.uvcount();
if (uv_len > 0)
{
view.setDrawColor(new MColor(1.0f, 0.0f, 0.0f));
switch (info.drawingFunction)
{
case MTextureEditorDrawInfo.DrawingFunction.kDrawWireframe:
drawUVWireframe(geom, view, info);
break;
case MTextureEditorDrawInfo.DrawingFunction.kDrawEverything:
case MTextureEditorDrawInfo.DrawingFunction.kDrawUVForSelect:
drawUVWireframe(geom, view, info);
drawUVMapCoordNum(geom, view, info, false);
break;
case MTextureEditorDrawInfo.DrawingFunction.kDrawVertexForSelect:
case MTextureEditorDrawInfo.DrawingFunction.kDrawEdgeForSelect:
case MTextureEditorDrawInfo.DrawingFunction.kDrawFacetForSelect:
default:
drawUVWireframe(geom, view, info);
break;
}
;
}
}
public bool selectVertices(MSelectInfo selectInfo,
MSelectionList selectionList,
MPointArray worldSpaceSelectPts)
//
// Description:
//
// Vertex selection.
//
// Arguments:
//
// selectInfo - the selection state information
// selectionList - the list of selected items to add to
// worldSpaceSelectPts -
//
{
bool selected = false;
M3dView view = selectInfo.view;
MPoint xformedPoint = new MPoint();
MPoint selectionPoint = new MPoint();
double z = 0.0;
double previousZ = 0.0;
int closestPointVertexIndex = -1;
MDagPath path = selectInfo.multiPath;
// Create a component that will store the selected vertices
//
MFnSingleIndexedComponent fnComponent = new MFnSingleIndexedComponent();
MObject surfaceComponent = fnComponent.create(MFn.Type.kMeshVertComponent);
uint vertexIndex;
// if the user did a single mouse click and we find > 1 selection
// we will use the alignmentMatrix to find out which is the closest
//
MMatrix alignmentMatrix = new MMatrix();
MPoint singlePoint = new MPoint();
bool singleSelection = selectInfo.singleSelection;
if (singleSelection)
{
alignmentMatrix = selectInfo.alignmentMatrix;
}
// Get the geometry information
//
apiMesh meshNode = (apiMesh)surfaceShape;
apiMeshGeom geom = meshNode.meshGeom();
// Loop through all vertices of the mesh and
// see if they lie withing the selection area
//
uint numVertices = geom.vertices.length;
for (vertexIndex = 0; vertexIndex < numVertices; vertexIndex++)
{
MPoint currentPoint = geom.vertices[(int)vertexIndex];
// Sets OpenGL's render mode to select and stores
// selected items in a pick buffer
//
view.beginSelect();
OpenGL.glBegin(OpenGL.GL_POINTS);
OpenGL.glVertex3f((float)currentPoint[0],
(float)currentPoint[1],
(float)currentPoint[2]);
OpenGL.glEnd();
if (view.endSelect() > 0) // Hit count > 0
{
selected = true;
if (singleSelection)
{
xformedPoint = currentPoint;
xformedPoint.homogenize();
xformedPoint.multiplyEqual(alignmentMatrix);
z = xformedPoint.z;
if (closestPointVertexIndex < 0 || z > previousZ)
{
closestPointVertexIndex = (int)vertexIndex;
singlePoint = currentPoint;
previousZ = z;
}
}
else
{
// multiple selection, store all elements
//
fnComponent.addElement((int)vertexIndex);
}
}
}
// If single selection, insert the closest point into the array
//
if (selected && selectInfo.singleSelection)
{
fnComponent.addElement(closestPointVertexIndex);
// need to get world space position for this vertex
//
selectionPoint = singlePoint;
selectionPoint.multiplyEqual(path.inclusiveMatrix);
}
// Add the selected component to the selection list
//
if (selected)
{
MSelectionList selectionItem = new MSelectionList();
selectionItem.add(path, surfaceComponent);
MSelectionMask mask = new MSelectionMask(MSelectionMask.SelectionType.kSelectComponentsMask);
selectInfo.addSelection(
selectionItem, selectionPoint,
selectionList, worldSpaceSelectPts,
mask, true);
}
return(selected);
}
/////////////////////////////////////////////////////////////////////
//
// Overrides
//
/////////////////////////////////////////////////////////////////////
public override void getDrawRequests(MDrawInfo info,
bool objectAndActiveOnly,
MDrawRequestQueue queue)
//
// Description:
//
// Add draw requests to the draw queue
//
// Arguments:
//
// info - current drawing state
// objectsAndActiveOnly - no components if true
// queue - queue of draw requests to add to
//
{
// Get the data necessary to draw the shape
//
MDrawData data = new MDrawData();
apiMesh meshNode = (apiMesh)surfaceShape;
apiMeshGeom geom = meshNode.meshGeom();
if ((null == geom) || (0 == geom.faceCount))
{
MGlobal.displayInfo("NO DrawRequest for apiMesh");
return;
}
// This call creates a prototype draw request that we can fill
// in and then add to the draw queue.
//
MDrawRequest request = getDrawRequest(info); // info.getPrototype(this);
getDrawData(geom, out data);
request.setDrawData(data);
// Decode the draw info and determine what needs to be drawn
//
M3dView.DisplayStyle appearance = info.displayStyle;
M3dView.DisplayStatus displayStatus = info.displayStatus;
// Are we displaying meshes?
if (!info.objectDisplayStatus(M3dView.DisplayObjects.kDisplayMeshes))
{
return;
}
// Use this code to help speed up drawing.
// inUserInteraction() is true for any interaction with
// the viewport, including object or component TRS and camera changes.
// userChangingViewContext() is true only when the user is using view
// context tools (tumble, dolly, track, etc.)
//
if (info.inUserInteraction || info.userChangingViewContext)
{
// User is using view context tools so
// request fast draw and get out
//
request.token = (int)DrawToken.kDrawRedPointAtCenter;
queue.add(request);
return;
}
switch (appearance)
{
case M3dView.DisplayStyle.kWireFrame:
{
request.token = (int)DrawToken.kDrawWireframe;
int activeColorTable = (int)M3dView.ColorTable.kActiveColors;
int dormantColorTable = (int)M3dView.ColorTable.kDormantColors;
switch (displayStatus)
{
case M3dView.DisplayStatus.kLead:
request.setColor(LEAD_COLOR, activeColorTable);
break;
case M3dView.DisplayStatus.kActive:
request.setColor(ACTIVE_COLOR, activeColorTable);
break;
case M3dView.DisplayStatus.kActiveAffected:
request.setColor(ACTIVE_AFFECTED_COLOR, activeColorTable);
break;
case M3dView.DisplayStatus.kDormant:
request.setColor(DORMANT_COLOR, dormantColorTable);
break;
case M3dView.DisplayStatus.kHilite:
request.setColor(HILITE_COLOR, activeColorTable);
break;
default:
break;
}
queue.add(request);
break;
}
case M3dView.DisplayStyle.kGouraudShaded:
{
// Create the smooth shaded draw request
//
request.token = (int)DrawToken.kDrawSmoothShaded;
// Need to get the material info
//
MDagPath path = info.multiPath; // path to your dag object
M3dView view = info.view; // view to draw to
MMaterial material = base.material(path);
// If the user currently has the default material enabled on the
// view then use the default material for shading.
//
if (view.usingDefaultMaterial)
{
material = MMaterial.defaultMaterial;
}
// Evaluate the material and if necessary, the texture.
//
material.evaluateMaterial(view, path);
bool drawTexture = true;
if (drawTexture && material.materialIsTextured)
{
material.evaluateTexture(data);
}
request.material = material;
// request.setDisplayStyle( appearance );
bool materialTransparent = false;
material.getHasTransparency(ref materialTransparent);
if (materialTransparent)
{
request.isTransparent = true;
}
queue.add(request);
// create a draw request for wireframe on shaded if
// necessary.
//
if ((displayStatus == M3dView.DisplayStatus.kActive) ||
(displayStatus == M3dView.DisplayStatus.kLead) ||
(displayStatus == M3dView.DisplayStatus.kHilite))
{
MDrawRequest wireRequest = getDrawRequest(info); // info.getPrototype(this);
wireRequest.setDrawData(data);
wireRequest.token = (int)DrawToken.kDrawWireframeOnShaded;
wireRequest.displayStyle = M3dView.DisplayStyle.kWireFrame;
int activeColorTable = (int)M3dView.ColorTable.kActiveColors;
switch (displayStatus)
{
case M3dView.DisplayStatus.kLead:
wireRequest.setColor(LEAD_COLOR, activeColorTable);
break;
case M3dView.DisplayStatus.kActive:
wireRequest.setColor(ACTIVE_COLOR, activeColorTable);
break;
case M3dView.DisplayStatus.kHilite:
wireRequest.setColor(HILITE_COLOR, activeColorTable);
break;
default:
break;
}
queue.add(wireRequest);
}
break;
}
case M3dView.DisplayStyle.kFlatShaded:
request.token = (int)DrawToken.kDrawFlatShaded;
queue.add(request);
break;
case M3dView.DisplayStyle.kBoundingBox:
request.token = (int)DrawToken.kDrawBoundingBox;
queue.add(request);
break;
default:
break;
}
// Add draw requests for components
//
if (!objectAndActiveOnly)
{
// Inactive components
//
if ((appearance == M3dView.DisplayStyle.kPoints) ||
(displayStatus == M3dView.DisplayStatus.kHilite))
{
MDrawRequest vertexRequest = getDrawRequest(info); // info.getPrototype(this);
vertexRequest.setDrawData(data);
vertexRequest.token = (int)DrawToken.kDrawVertices;
vertexRequest.setColor(DORMANT_VERTEX_COLOR,
(int)M3dView.ColorTable.kActiveColors);
queue.add(vertexRequest);
}
// Active components
//
if (((MPxSurfaceShape)surfaceShape).hasActiveComponents)
{
MDrawRequest activeVertexRequest = getDrawRequest(info); // info.getPrototype(this);
activeVertexRequest.setDrawData(data);
activeVertexRequest.token = (int)DrawToken.kDrawVertices;
activeVertexRequest.setColor(ACTIVE_VERTEX_COLOR,
(int)M3dView.ColorTable.kActiveColors);
MObjectArray clist = ((MPxSurfaceShape)surfaceShape).activeComponents;
MObject vertexComponent = clist[0]; // Should filter list
activeVertexRequest.component = vertexComponent;
queue.add(activeVertexRequest);
}
}
}
