//-----------------------------------------------------------------------
//
//ORIGINAL LINE: void _findAllIntersections(const Shape& STLAllocator<U, AllocPolicy>, List<IntersectionInShape>& intersections) const
private void _findAllIntersections(Shape other, ref std_vector<IntersectionInShape> intersections) {
for (ushort i = 0; i < getSegCount(); i++) {
Segment2D seg1 = new Segment2D(getPoint(i), getPoint(i + 1));
for (ushort j = 0; j < other.getSegCount(); j++) {
Segment2D seg2 = new Segment2D(other.getPoint(j), other.getPoint(j + 1));
Vector2 intersect = new Vector2();
if (seg1.findIntersect(seg2, ref intersect)) {
IntersectionInShape inter = new IntersectionInShape(i, j, intersect);
// check if intersection is "borderline" : too near to a vertex
if ((seg1.mA - intersect).SquaredLength < 1e-8) {
inter.onVertex[0] = true;
}
if ((seg1.mB - intersect).SquaredLength < 1e-8) {
inter.onVertex[0] = true;
inter.index[0]++;
}
if ((seg2.mA - intersect).SquaredLength < 1e-8) {
inter.onVertex[1] = true;
}
if ((seg2.mB - intersect).SquaredLength < 1e-8) {
inter.onVertex[1] = true;
inter.index[1]++;
}
intersections.push_back(inter);
}
}
}
}
//-----------------------------------------------------------------------
//
//ORIGINAL LINE: MultiShape _booleanOperation(const Shape& STLAllocator<U, AllocPolicy>, BooleanOperationType opType) const
private MultiShape _booleanOperation(Shape other, BooleanOperationType opType) {
if (!mClosed || mPoints.size() < 2)
OGRE_EXCEPT("Ogre::Exception::ERR_INVALID_STATE", "Current shapes must be closed and has to contain at least 2 points!", "Procedural::Shape::_booleanOperation(const Procedural::Shape&, Procedural::BooleanOperationType)");
if (!other.mClosed || other.mPoints.size() < 2)
OGRE_EXCEPT("Ogre::Exception::ERR_INVALIDPARAMS", "Other shapes must be closed and has to contain at least 2 points!", "Procedural::Shape::_booleanOperation(const Procedural::Shape&, Procedural::BooleanOperationType)");
;
// Compute the intersection between the 2 shapes
std_vector<IntersectionInShape> intersections = new std_vector<IntersectionInShape>();
_findAllIntersections(other, ref intersections);
// Build the resulting shape
if (intersections.empty()) {
if (isPointInside(other.getPoint(0))) {
// Shape B is completely inside shape A
if (opType == BooleanOperationType.BOT_UNION) {
MultiShape ms = new MultiShape();
ms.addShape(this);
return ms;
}
else if (opType == BooleanOperationType.BOT_INTERSECTION) {
MultiShape ms = new MultiShape();
ms.addShape(other);
return ms;
}
else if (opType == BooleanOperationType.BOT_DIFFERENCE) {
MultiShape ms = new MultiShape();
ms.addShape(this);
ms.addShape(other);
ms.getShape(1).switchSide();
return ms;
}
}
else if (other.isPointInside(getPoint(0))) {
// Shape A is completely inside shape B
if (opType == BooleanOperationType.BOT_UNION) {
MultiShape ms = new MultiShape();
ms.addShape(other);
return ms;
}
else if (opType == BooleanOperationType.BOT_INTERSECTION) {
MultiShape ms = new MultiShape();
ms.addShape(this);
return ms;
}
else if (opType == BooleanOperationType.BOT_DIFFERENCE) {
MultiShape ms = new MultiShape();
ms.addShape(this);
ms.addShape(other);
ms.getShape(0).switchSide();
return ms;
}
}
else {
if (opType == BooleanOperationType.BOT_UNION) {
MultiShape ms = new MultiShape();
ms.addShape(this);
ms.addShape(other);
return ms;
}
else if (opType == BooleanOperationType.BOT_INTERSECTION)
return new MultiShape(); //empty result
else if (opType == BooleanOperationType.BOT_DIFFERENCE)
return new MultiShape(); //empty result
}
}
MultiShape outputMultiShape = new MultiShape();
Shape[] inputShapes = new Shape[2];
inputShapes[0] = this;
inputShapes[1] = other;
while (!intersections.empty()) {
Shape outputShape = new Shape();
byte shapeSelector = 0; // 0 : first shape, 1 : second shape
Vector2 currentPosition = intersections[0].position;//intersections.GetEnumerator().position;
IntersectionInShape firstIntersection = intersections[0];//*intersections.GetEnumerator();
uint currentSegment = firstIntersection.index[shapeSelector];
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent to the STL vector 'erase' method in C#:
//intersections.erase(intersections.GetEnumerator());//ÒƳý
intersections.erase(firstIntersection, true);
outputShape.addPoint(currentPosition);
sbyte isIncreasing = 0; // +1 if increasing, -1 if decreasing, 0 if undefined
if (!_findWhereToGo(inputShapes, opType, firstIntersection, ref shapeSelector, ref isIncreasing, ref currentSegment)) {
// That intersection is located on a place where the resulting shape won't go => discard
continue;
}
while (true) {
// find the closest intersection on the same segment, in the correct direction
//List<IntersectionInShape>.Enumerator found_next_intersection = intersections.end();
IntersectionInShape found_next_intersection = intersections[intersections.Count - 1];
int found_next_intersection_pos = -1;
float distanceToNextIntersection = float.MaxValue;// std.numeric_limits<Real>.max();
uint nextPoint = currentSegment + (uint)(isIncreasing == 1 ? 1 : 0);
bool nextPointIsOnIntersection = false;
//for (List<IntersectionInShape>.Enumerator it = intersections.GetEnumerator(); it.MoveNext(); ++it)
for (int i = 0; i < intersections.Count; i++) {
IntersectionInShape it = intersections[i];
if (currentSegment == it.index[shapeSelector]) {
if (((it.position - currentPosition).DotProduct(it.position - inputShapes[shapeSelector].getPoint((int)nextPoint)) < 0f) || (it.onVertex[shapeSelector] && nextPoint == it.index[shapeSelector])) {
// found an intersection between the current one and the next segment point
float d = (it.position - currentPosition).Length;
if (d < distanceToNextIntersection) {
// check if we have the nearest intersection
found_next_intersection = it;
found_next_intersection_pos = i;
distanceToNextIntersection = d;
}
}
}
if (nextPoint == it.index[shapeSelector] && it.onVertex[shapeSelector])
nextPointIsOnIntersection = true;
}
// stop condition
if (currentSegment == firstIntersection.index[shapeSelector]) {
// we found ourselves on the same segment as the first intersection and no other
if ((firstIntersection.position - currentPosition).DotProduct(firstIntersection.position - inputShapes[shapeSelector].getPoint((int)nextPoint)) < 0f) {
float d = (firstIntersection.position - currentPosition).Length;
if (d > 0.0f && d < distanceToNextIntersection) {
outputShape.close();
break;
}
}
}
// We actually found the next intersection => change direction and add current intersection to the list
//if (found_next_intersection.MoveNext())
//if (intersections.Count > 1) {
if (found_next_intersection_pos != -1) {
//IntersectionInShape currentIntersection = found_next_intersection.Current;
IntersectionInShape currentIntersection = found_next_intersection;
intersections.erase(found_next_intersection, true);
//IntersectionInShape currentIntersection = intersections[intersections.Count - 1];
outputShape.addPoint(currentIntersection.position);
bool result = _findWhereToGo(inputShapes, opType, currentIntersection, ref shapeSelector, ref isIncreasing, ref currentSegment);
if (result == null) {
OGRE_EXCEPT("Ogre::Exception::ERR_INTERNAL_ERROR", "We should not be here!", "Procedural::Shape::_booleanOperation(const Procedural::Shape&, Procedural::BooleanOperationType)");
;
}
}
else {
// no intersection found for the moment => just continue on the current segment
if (!nextPointIsOnIntersection) {
if (isIncreasing == 1)
currentPosition = inputShapes[shapeSelector].getPoint((int)currentSegment + 1);
else
currentPosition = inputShapes[shapeSelector].getPoint((int)currentSegment);
outputShape.addPoint(currentPosition);
}
currentSegment = (uint)Utils.modulo((int)currentSegment + isIncreasing, inputShapes[shapeSelector].getSegCount());
}
}
outputMultiShape.addShape(outputShape);
}
return outputMultiShape;
}
// *
// * Build a MultiShape from chars (one Shape per character)
// * \exception Ogre::InternalErrorException Freetype error
// * \todo Need to split shapes of multi region chars. For example the letter \c O
// * has two shapes, but they are connected to one shape.
//
public MultiShape realizeShapes()
{
MultiShape retVal = new MultiShape();
FT_Library ftlib = new FT_Library();
FT_Face face = new FT_Face();
FT_GlyphSlot slot = new FT_GlyphSlot();
FT_Error error = FT_Init_FreeType(ftlib);
if (error == 0)
{
error = FT_New_Face(ftlib, getFontFileByName().c_str(), 0, face);
if (error == FT_Err_Unknown_File_Format)
{
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent in C# to the C++ __LINE__ macro:
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent in C# to the C++ __FILE__ macro:
throw ExceptionFactory.create(Mogre.ExceptionCodeType<Mogre.Exception.ExceptionCodes.ERR_INTERNAL_ERROR>(), "FreeType ERROR: FT_Err_Unknown_File_Format", "Procedural::TextShape::realizeShapes()", __FILE__, __LINE__);
;
}
else if (error != null)
{
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent in C# to the C++ __LINE__ macro:
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent in C# to the C++ __FILE__ macro:
throw ExceptionFactory.create(Mogre.ExceptionCodeType<Mogre.Exception.ExceptionCodes.ERR_INTERNAL_ERROR>(), "FreeType ERROR: FT_New_Face - " + StringConverter.toString(error), "Procedural::TextShape::realizeShapes()", __FILE__, __LINE__);
;
}
else
{
FT_Set_Pixel_Sizes(face, 0, mFontSize);
int px = 0;
int py = 0;
slot = face.glyph;
for (int n = 0; n < mText.length(); n++)
{
error = FT_Load_Char(face, mText[n], FT_LOAD_NO_BITMAP);
if (error != null)
continue;
Shape s = new Shape();
int nContours = face.glyph.outline.n_contours;
int startPos = 0;
string tags = face.glyph.outline.tags;
FT_Vector[] vec = face.glyph.outline.points;
for (int k = 0; k < nContours; k++)
{
if (k > 0)
startPos = face.glyph.outline.contours[k-1]+1;
int endPos = face.glyph.outline.contours[k]+1;
Vector2 lastPoint = Vector2.ZERO;
for (int j = startPos; j < endPos; j++)
{
if (FT_CURVE_TAG(tags[j]) == FT_CURVE_TAG_ON)
{
lastPoint = Vector2((float)vec[j].x, (float)vec[j].y);
s.addPoint(lastPoint / 64.0f);
}
else
{
if (FT_CURVE_TAG(tags[j]) == FT_CURVE_TAG_CUBIC)
{
int prevPoint = j - 1;
if (j == 0)
prevPoint = endPos - 1;
int nextIndex = j + 1;
if (nextIndex >= endPos)
nextIndex = startPos;
Vector2[] nextPoint = new Vector2[nextIndex]((float)vec.x, (float)vec[nextIndex].y);
if ((FT_CURVE_TAG(tags[prevPoint]) != FT_CURVE_TAG_ON) && (FT_CURVE_TAG(tags[prevPoint]) == FT_CURVE_TAG_CUBIC))
{
BezierCurve2 bc = new BezierCurve2();
bc.addPoint(Vector2((float)vec[prevPoint].x, (float)vec[prevPoint].y) / 64.0f);
bc.addPoint(Vector2((float)vec[j].x, (float)vec[j].y) / 64.0f);
bc.addPoint(Vector2((float)vec[nextIndex].x, (float)vec[nextIndex].y) / 64.0f);
s.appendShape(bc.realizeShape());
}
}
else
{
Vector2[] conicPoint = new Vector2[j]((float)vec.x, (float)vec[j].y);
if (j == startPos)
{
if ((FT_CURVE_TAG(tags[endPos-1]) != FT_CURVE_TAG_ON) && (FT_CURVE_TAG(tags[endPos-1]) != FT_CURVE_TAG_CUBIC))
{
Vector2[] lastConnic = new Vector2[endPos - 1]((float)vec.x, (float)vec[endPos - 1].y);
lastPoint = (conicPoint + lastConnic) / 2;
}
}
int nextIndex = j + 1;
if (nextIndex >= endPos)
nextIndex = startPos;
Vector2[] nextPoint = new Vector2[nextIndex]((float)vec.x, (float)vec[nextIndex].y);
bool nextIsConnic = (FT_CURVE_TAG(tags[nextIndex]) != FT_CURVE_TAG_ON) && (FT_CURVE_TAG(tags[nextIndex]) != FT_CURVE_TAG_CUBIC);
if (nextIsConnic)
nextPoint = (conicPoint + nextPoint) / 2;
int pc = s.getPointCount();
BezierCurve2 bc = new BezierCurve2();
if (pc == 0)
bc.addPoint(Vector2.ZERO);
else
bc.addPoint(s.getPoint(pc - 1));
bc.addPoint(lastPoint / 64.0f);
bc.addPoint(conicPoint / 64.0f);
bc.addPoint(nextPoint / 64.0f);
if (pc == 0)
s.appendShape(bc.realizeShape());
else
{
List<Vector2> subShape = bc.realizeShape().getPoints();
for (List<Vector2>.Enumerator iter = subShape.GetEnumerator(); iter.MoveNext(); iter++)
{
if (iter != subShape.GetEnumerator())
s.addPoint(iter.Current);
}
}
if (nextIsConnic)
//
//ORIGINAL LINE: lastPoint = nextPoint;
lastPoint=(nextPoint);
}
}
}
}
s.close();
s.translate((float)px, (float)py);
retVal.addShape(s);
px += slot.advance.x >> 6;
py += slot.advance.y >> 6;
}
FT_Done_Face(face);
}
FT_Done_FreeType(ftlib);
}
else
{
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent in C# to the C++ __LINE__ macro:
//C++ TO C# CONVERTER TODO TASK: There is no direct equivalent in C# to the C++ __FILE__ macro:
throw ExceptionFactory.create(Mogre.ExceptionCodeType<Mogre.Exception.ExceptionCodes.ERR_INTERNAL_ERROR>(), "FreeType ERROR: FT_Init_FreeTyp", "Procedural::TextShape::realizeShapes()", __FILE__, __LINE__);
;
}
return retVal;
}
