// addUIDrawables() provides access to the MUIDrawManager, which can be used
// to queue up operations for drawing simple UI elements such as lines, circles and
// text. To enable addUIDrawables(), override hasUIDrawables() and make it return true.
void FootPrintDrawOverride::addUIDrawables(
const MDagPath& objPath,
MHWRender::MUIDrawManager& drawManager,
const MHWRender::MFrameContext& frameContext,
const MUserData* data)
{
// Get data cached by prepareForDraw() for each drawable instance, then MUIDrawManager
// can draw simple UI by these data.
FootPrintData* pLocatorData = (FootPrintData*)data;
if (!pLocatorData)
{
return;
}
drawManager.beginDrawable();
// Draw the foot print solid/wireframe
drawManager.setColor( pLocatorData->fColor );
drawManager.setDepthPriority(5);
if (frameContext.getDisplayStyle() & MHWRender::MFrameContext::kGouraudShaded) {
drawManager.mesh(MHWRender::MUIDrawManager::kTriangles, pLocatorData->fSoleTriangleList);
drawManager.mesh(MHWRender::MUIDrawManager::kTriangles, pLocatorData->fHeelTriangleList);
}
drawManager.mesh(MHWRender::MUIDrawManager::kClosedLine, pLocatorData->fSoleLineList);
drawManager.mesh(MHWRender::MUIDrawManager::kClosedLine, pLocatorData->fHeelLineList);
// Draw a text "Foot"
MPoint pos( 0.0, 0.0, 0.0 ); // Position of the text
MColor textColor( 0.1f, 0.8f, 0.8f, 1.0f ); // Text color
drawManager.setColor( textColor );
drawManager.setFontSize( MHWRender::MUIDrawManager::kSmallFontSize );
drawManager.text( pos, MString("Footprint"), MHWRender::MUIDrawManager::kCenter );
drawManager.endDrawable();
}
void uiDrawManagerDrawOverride::addUIDrawables(
const MDagPath& objPath,
MHWRender::MUIDrawManager& drawManager,
const MHWRender::MFrameContext& frameContext,
const MUserData* data)
{
const uiDrawManagerData* thisdata = dynamic_cast<const uiDrawManagerData*>(data);
if (!thisdata) {
return;
}
switch (thisdata->fUIType)
{
case uiDrawManager::kText:
{
// Draw a text "uiDrawManager"
// All drawing operations must take place between calls to beginDrawable()
// and endDrawable().
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setFontSize(thisdata->fTextFontSize);
drawManager.setFontIncline(thisdata->fTextIncline);
drawManager.setFontWeight(thisdata->fTextWeight);
drawManager.setFontStretch(thisdata->fTextStretch);
drawManager.setFontLine(thisdata->fTextLine);
MString faceName = uiDrawManagerData::fFontList[thisdata->fFontFaceIndex];
drawManager.setFontName(faceName);
int boxSize[] = { thisdata->fTextBoxWidth, thisdata->fTextBoxHeight };
if (thisdata->fDraw2D) {
// uiDrawManagerData::fPosition gives a screen space position
// where 2D UI item is located.
drawManager.text2d(thisdata->fPosition, thisdata->fText, thisdata->fTextAlignment,
boxSize[0]+boxSize[1] == 0 ? NULL : boxSize, &thisdata->fTextBoxColor, false);
}
else {
// for 3D items, place it at the origin of the world space.
drawManager.text(thisdata->fPosition, thisdata->fText, thisdata->fTextAlignment,
boxSize[0]+boxSize[1] == 0 ? NULL : boxSize, &thisdata->fTextBoxColor, false);
}
drawManager.endDrawable();
}
break;
case uiDrawManager::kLine:
case uiDrawManager::kLineList:
case uiDrawManager::kLineStrip:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
if (thisdata->fUIType == uiDrawManager::kLineStrip)
drawManager.lineStrip(thisdata->fLines, thisdata->fDraw2D);
else
drawManager.lineList(thisdata->fLines, thisdata->fDraw2D);
drawManager.endDrawable();
}
break;
case uiDrawManager::kPoint:
case uiDrawManager::kPointList:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setPointSize(thisdata->fPointSize);
drawManager.points(thisdata->fPoints, thisdata->fDraw2D);
drawManager.endDrawable();
}
break;
case uiDrawManager::kRect:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
if (thisdata->fDraw2D) {
// For 2d rectangle, an up vector in screen space is used to determine its X
// and Y directions. In addition, "fRectScaleX" and "fRectScaleY"(in pixels)
// specify the half-lengths of the 2d rectangle.
drawManager.rect2d(thisdata->fPosition, thisdata->fRectUp,
thisdata->fRectScaleX, thisdata->fRectScaleY, thisdata->fIsFilled);
}
else {
// For 3d rectangle, the up vector should not be parallel with the normal vector.
drawManager.rect(thisdata->fPosition, thisdata->fRectUp, thisdata->fRectNormal,
thisdata->fRectScaleX, thisdata->fRectScaleY, thisdata->fIsFilled);
}
drawManager.endDrawable();
}
break;
case uiDrawManager::kQuad:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
// prepare primitive type
MUIDrawManager::Primitive mode =
thisdata->fIsFilled ? MUIDrawManager::kTriStrip : MUIDrawManager::kClosedLine;
// prepare position list
MPointArray position;
for (int i = 0; i < 4; ++i) {
position.append(thisdata->fQuadVertex[i]);
}
// prepare index
MUintArray index;
index.append(0);
index.append(1);
index.append(3);
index.append(2);
// draw mesh
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
if (thisdata->fDraw2D) {
drawManager.mesh2d(mode, position, NULL, thisdata->fIsFilled ? &index : NULL);
}
else {
drawManager.mesh(mode, position, NULL, NULL, thisdata->fIsFilled ? &index : NULL);
}
drawManager.endDrawable();
}
break;
case uiDrawManager::kSphere:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
drawManager.sphere(thisdata->fPosition, thisdata->fRadius, thisdata->fIsFilled);
drawManager.endDrawable();
}
break;
case uiDrawManager::kCircle:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
if (thisdata->fDraw2D) {
// The radius in specified as pixel unit for 2d items.
drawManager.circle2d(thisdata->fPosition, thisdata->fRadius,
thisdata->fIsFilled);
}
else {
drawManager.circle(thisdata->fPosition, thisdata->fCircleNormal, thisdata->fRadius,
thisdata->fIsFilled);
}
drawManager.endDrawable();
}
break;
case uiDrawManager::kArc:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
if (thisdata->fDraw2D) {
// If 2d, the range of the arc is defined by the start and end vectors
// specified in screen space.
drawManager.arc2d(thisdata->fPosition, thisdata->fArcStart, thisdata->fArcEnd,
thisdata->fRadius, thisdata->fIsFilled);
}
else {
// For 3d arc, the projections of the start and end vectors onto the arc plane(
// determined by the normal vector) determine the range of the arc.
drawManager.arc(thisdata->fPosition, thisdata->fArcStart, thisdata->fArcEnd,
thisdata->fArcNormal, thisdata->fRadius, thisdata->fIsFilled);
}
drawManager.endDrawable();
}
break;
case uiDrawManager::kIcon:
{
MString iconName = uiDrawManagerData::fIconList[thisdata->fIconIndex];
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.icon(thisdata->fPosition, iconName, thisdata->fIconScale);
drawManager.endDrawable();
}
break;
case uiDrawManager::kCone:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
drawManager.cone(thisdata->fPosition,
thisdata->fConeDirection,
thisdata->fRadius,
thisdata->fConeHeight,
thisdata->fIsFilled);
drawManager.endDrawable();
}
break;
case uiDrawManager::kBox:
{
drawManager.beginDrawable();
drawManager.setColor(thisdata->fColor);
drawManager.setLineWidth(thisdata->fLineWidth);
drawManager.setLineStyle(thisdata->fLineStyle);
drawManager.setPaintStyle(thisdata->fShaded ?
MUIDrawManager::kShaded : MUIDrawManager::kFlat);
drawManager.box(thisdata->fPosition,
thisdata->fBoxUp,
thisdata->fBoxRight,
thisdata->fBoxScale[0],
thisdata->fBoxScale[1],
thisdata->fBoxScale[2],
thisdata->fIsFilled);
drawManager.endDrawable();
}
break;
default:
perror("unhandled ui types.");
break;
}
}