Merge branch 'master' of git.ucc.asn.au:ipdf/code
[ipdf/code.git] / src / document.cpp
index 8a5635c..f8a1796 100644 (file)
@@ -4,6 +4,7 @@
 #include <fstream>
 
 #include "../contrib/pugixml-1.4/src/pugixml.cpp"
+#include "transformationtype.h"
 
 #include "stb_truetype.h"
 
@@ -94,9 +95,8 @@ void Document::Save(const string & filename)
 
 void Document::GenBaseQuadtree()
 {
-       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QTC_UNKNOWN, 0, ObjectCount()});
+       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QTC_UNKNOWN, 0, ObjectCount(), -1});
        m_quadtree.root_id = 0;
-       GenQuadChild(0, QTC_TOP_LEFT);
 }
 
 int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
@@ -105,6 +105,7 @@ int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
        {
        case RECT_FILLED:
        case RECT_OUTLINE:
+       case PATH:
                {
                Rect obj_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
                if (obj_bounds.x < 0)
@@ -132,13 +133,25 @@ int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
                }
        case BEZIER:
                {
-               Rect child_node_bounds = TransformFromQuadChild({0,0,1,1}, type);
-               std::vector<Bezier> new_curves = m_objects.beziers[m_objects.data_indices[object_id]].ClipToRectangle(child_node_bounds);
-               Rect obj_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
+               // If we're entirely within the quadtree node, no clipping need occur.
+               if (ContainedInQuadChild(m_objects.bounds[object_id], type))
+               {
+                       m_objects.bounds.push_back(TransformToQuadChild(m_objects.bounds[object_id], type));
+                       m_objects.types.push_back(m_objects.types[object_id]);
+                       m_objects.data_indices.push_back(m_objects.data_indices[object_id]);
+                       return 1;
+               }
+               Rect clip_bezier_bounds = TransformRectCoordinates(m_objects.bounds[object_id], TransformFromQuadChild(Rect{0,0,1,1}, type)); 
+               std::vector<Bezier> new_curves = m_objects.beziers[m_objects.data_indices[object_id]].ClipToRectangle(clip_bezier_bounds);
                for (size_t i = 0; i < new_curves.size(); ++i)
                {
-                       unsigned index = AddBezierData(new_curves[i]);
-                       m_objects.bounds.push_back(obj_bounds);
+                       Rect new_bounds = TransformToQuadChild(m_objects.bounds[object_id], type);
+                       Bezier new_curve_data = new_curves[i].ToAbsolute(TransformToQuadChild(m_objects.bounds[object_id],type));
+                       new_bounds = new_curve_data.SolveBounds();
+                       Debug("New bounds: %s", new_bounds.Str().c_str());
+                       new_curve_data = new_curve_data.ToRelative(new_bounds);
+                       unsigned index = AddBezierData(new_curve_data);
+                       m_objects.bounds.push_back(new_bounds);
                        m_objects.types.push_back(BEZIER);
                        m_objects.data_indices.push_back(index);
                }
@@ -156,17 +169,23 @@ int Document::ClipObjectToQuadChild(int object_id, QuadTreeNodeChildren type)
 QuadTreeIndex Document::GenQuadChild(QuadTreeIndex parent, QuadTreeNodeChildren type)
 {
        QuadTreeIndex new_index = m_quadtree.nodes.size();
-       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, parent, type, 0, 0});
+       Debug("-------------- Generating Quadtree Node %d (parent %d, type %d) ----------------------", new_index, parent, type);
+       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, parent, type, 0, 0, -1});
 
        m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
-       for (unsigned i = m_quadtree.nodes[parent].object_begin; i < m_quadtree.nodes[parent].object_end; ++i)
+       for (QuadTreeIndex overlay = parent; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
        {
-               if (IntersectsQuadChild(m_objects.bounds[i], type))
+               for (unsigned i = m_quadtree.nodes[overlay].object_begin; i < m_quadtree.nodes[overlay].object_end; ++i)
                {
-                       m_count += ClipObjectToQuadChild(i, type);
+                       if (IntersectsQuadChild(m_objects.bounds[i], type))
+                       {
+                               m_count += ClipObjectToQuadChild(i, type);
+                       }
                }
        }
        m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
+       // No objects are dirty.
+       m_quadtree.nodes[new_index].object_dirty = m_objects.bounds.size();
        switch (type)
        {
                case QTC_TOP_LEFT:
@@ -187,21 +206,101 @@ QuadTreeIndex Document::GenQuadChild(QuadTreeIndex parent, QuadTreeNodeChildren
        return new_index;
 }
 
+void Document::OverlayQuadChildren(QuadTreeIndex orig_parent, QuadTreeIndex parent, QuadTreeNodeChildren type)
+{
+       QuadTreeIndex new_index = m_quadtree.nodes.size();
+       Debug("-------------- Generating Quadtree Node %d (orig %d parent %d, type %d) ----------------------", new_index, orig_parent, parent, type);
+       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, orig_parent, type, 0, 0, -1});
+
+       m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
+       for (unsigned i = m_quadtree.nodes[parent].object_dirty; i < m_quadtree.nodes[parent].object_end; ++i)
+       {
+               if (IntersectsQuadChild(m_objects.bounds[i], type))
+               {
+                       m_count += ClipObjectToQuadChild(i, type);
+               }
+       }
+       m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
+       QuadTreeIndex orig_node = -1;
+       switch (type)
+       {
+               case QTC_TOP_LEFT:
+                       orig_node = m_quadtree.nodes[orig_parent].top_left;
+                       break;
+               case QTC_TOP_RIGHT:
+                       orig_node = m_quadtree.nodes[orig_parent].top_right;
+                       break;
+               case QTC_BOTTOM_LEFT:
+                       orig_node = m_quadtree.nodes[orig_parent].bottom_left;
+                       break;
+               case QTC_BOTTOM_RIGHT:
+                       orig_node = m_quadtree.nodes[orig_parent].bottom_right;
+                       break;
+               default:
+                       Fatal("Tried to overlay a QuadTree child of invalid type!");
+       }
+       if (orig_node == -1)
+               Fatal("Tried to overlay a QuadTree child that didn't exist!");
+
+       // Add us to the node's overlay linked list.
+       QuadTreeIndex prev_overlay = orig_node;
+       while (m_quadtree.nodes[prev_overlay].next_overlay != -1) prev_overlay = m_quadtree.nodes[prev_overlay].next_overlay;
+       Debug("- Original node %d, Previous overlay %d, new overlay %d", orig_node, prev_overlay, new_index);
+       m_quadtree.nodes[prev_overlay].next_overlay = new_index;
+
+       // Recurse into any extant children.
+       if (m_quadtree.nodes[orig_node].top_left != -1)
+               OverlayQuadChildren(orig_node, new_index, QTC_TOP_LEFT);
+       if (m_quadtree.nodes[orig_node].top_right != -1)
+               OverlayQuadChildren(orig_node, new_index, QTC_TOP_RIGHT);
+       if (m_quadtree.nodes[orig_node].bottom_left != -1)
+               OverlayQuadChildren(orig_node, new_index, QTC_BOTTOM_LEFT);
+       if (m_quadtree.nodes[orig_node].bottom_right != -1)
+               OverlayQuadChildren(orig_node, new_index, QTC_BOTTOM_RIGHT);
+
+       m_quadtree.nodes[new_index].object_dirty = m_quadtree.nodes[new_index].object_end;
+       m_quadtree.nodes[new_index].next_overlay = -1;
+}
+
+void Document::PropagateQuadChanges(QuadTreeIndex node)
+{
+       for(QuadTreeIndex overlay = node; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
+       {
+               // We don't care about clean overlays.
+               if (m_quadtree.nodes[overlay].object_dirty == m_quadtree.nodes[overlay].object_end) continue;
+               // Recurse into any extant children.
+               if (m_quadtree.nodes[node].top_left != -1)
+                       OverlayQuadChildren(node, overlay, QTC_TOP_LEFT);
+               if (m_quadtree.nodes[node].top_right != -1)
+                       OverlayQuadChildren(node, overlay, QTC_TOP_RIGHT);
+               if (m_quadtree.nodes[node].bottom_left != -1)
+                       OverlayQuadChildren(node, overlay, QTC_BOTTOM_LEFT);
+               if (m_quadtree.nodes[node].bottom_right != -1)
+                       OverlayQuadChildren(node, overlay, QTC_BOTTOM_RIGHT);
+
+               m_quadtree.nodes[overlay].object_dirty = m_quadtree.nodes[overlay].object_end;
+       }
+}
+
 // Reparent a quadtree node, making it the "type" child of a new node.
 QuadTreeIndex Document::GenQuadParent(QuadTreeIndex child, QuadTreeNodeChildren type)
 {
        QuadTreeIndex new_index = m_quadtree.nodes.size();
-       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, -1, QTC_UNKNOWN, 0, 0});
+       m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, -1, QTC_UNKNOWN, 0, 0, -1});
 
        m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
-       for (unsigned i = m_quadtree.nodes[child].object_begin; i < m_quadtree.nodes[child].object_end; ++i)
+       for (QuadTreeIndex overlay = child; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
        {
-               m_objects.bounds.push_back(TransformFromQuadChild(m_objects.bounds[i], type));
-               m_objects.types.push_back(m_objects.types[i]);
-               m_objects.data_indices.push_back(m_objects.data_indices[i]);
-               m_count++;
+               for (unsigned i = m_quadtree.nodes[overlay].object_begin; i < m_quadtree.nodes[overlay].object_end; ++i)
+               {
+                       m_objects.bounds.push_back(TransformFromQuadChild(m_objects.bounds[i], type));
+                       m_objects.types.push_back(m_objects.types[i]);
+                       m_objects.data_indices.push_back(m_objects.data_indices[i]);
+                       m_count++;
+               }
        }
        m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
+       m_quadtree.nodes[new_index].object_dirty = m_objects.bounds.size();
        switch (type)
        {
                case QTC_TOP_LEFT:
@@ -269,8 +368,8 @@ void Document::Load(const string & filename)
                        LoadStructVector<Bezier>(file, chunk_size/sizeof(Bezier), m_objects.beziers);
                        break;
                        
-               case CT_OBJGROUPS:
-                       Debug("Group data...");
+               case CT_OBJPATHS:
+                       Debug("Path data...");
                        Warn("Not handled because lazy");
                        break;
                }
@@ -284,32 +383,14 @@ void Document::Load(const string & filename)
 #endif
 }
 
-unsigned Document::AddGroup(unsigned start_index, unsigned end_index, const Colour & shading)
+unsigned Document::AddPath(unsigned start_index, unsigned end_index, const Colour & fill, const Colour & stroke)
 {
-       Real xmin = 0; Real ymin = 0; 
-       Real xmax = 0; Real ymax = 0;
-       
-       for (unsigned i = start_index; i <= end_index; ++i)
-       {
-               Rect & objb = m_objects.bounds[i];
-               
-               if (i == start_index || objb.x < xmin)
-                       xmin = objb.x;
-               if (i == start_index || (objb.x+objb.w) > xmax)
-                       xmax = (objb.x+objb.w);
-                       
-               if (i == start_index || objb.y < ymin)
-                       ymin = objb.y;
-               if (i == start_index || (objb.y+objb.h) > ymax)
-                       ymax = (objb.y+objb.h);
-       }
-       
-       Rect bounds(xmin,ymin, xmax-xmin, ymax-ymin);
-       
-       Group group = {start_index, end_index, shading};
-       
-       unsigned data_index = AddGroupData(group);
-       unsigned result = Add(GROUP, bounds,data_index);
+       Path path(m_objects, start_index, end_index, fill, stroke);
+       unsigned data_index = AddPathData(path);
+       Rect bounds = path.SolveBounds(m_objects);
+       unsigned result = Add(PATH, bounds,data_index);
+       m_objects.paths[data_index].m_index = result;
+       //Debug("Added path %u -> %u (%u objects) colour {%u,%u,%u,%u}, stroke {%u,%u,%u,%u}", start_index, end_index, (end_index - start_index), fill.r, fill.g, fill.b, fill.a, stroke.r, stroke.g, stroke.b, stroke.a);
        return result;
 }
 
@@ -320,16 +401,55 @@ unsigned Document::AddBezier(const Bezier & bezier)
 {
        Rect bounds = bezier.SolveBounds();
        Bezier data = bezier.ToRelative(bounds); // Relative
+       if (data.ToAbsolute(bounds) != bezier)
+       {
+               Warn("%s != %s", data.ToAbsolute(bounds).Str().c_str(),
+                       bezier.Str().c_str());
+               Warn("ToAbsolute on ToRelative does not give original Bezier");
+       }
        unsigned index = AddBezierData(data);
        return Add(BEZIER, bounds, index);
 }
 
-unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index)
+unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index, QuadTreeIndex qti)
 {
        m_objects.types.push_back(type);
        m_objects.bounds.push_back(bounds);
        m_objects.data_indices.push_back(data_index);
-       return (m_count++); // Why can't we just use the size of types or something?
+#ifndef QUADTREE_DISABLED
+       if (qti != -1)
+       {
+               QuadTreeIndex new_qti = qti;
+               while (m_quadtree.nodes[new_qti].next_overlay != -1)
+               {
+                       if (m_count == m_quadtree.nodes[new_qti].object_end+1)
+                       {
+                               m_quadtree.nodes[new_qti].object_end++;
+                               goto done;
+                       }
+                       new_qti = m_quadtree.nodes[new_qti].next_overlay;
+               }
+               {
+                       QuadTreeIndex overlay = m_quadtree.nodes.size();
+                       Debug("Adding new overlay, nqti = %d, overlay = %d", new_qti, overlay);
+                       m_quadtree.nodes.push_back(m_quadtree.nodes[qti]);
+                       m_quadtree.nodes[overlay].object_begin = m_count;
+                       // All objects are dirty.
+                       m_quadtree.nodes[overlay].object_dirty = m_count;
+                       m_quadtree.nodes[overlay].object_end = m_count+1;
+                       m_quadtree.nodes[overlay].next_overlay = -1;
+                       m_quadtree.nodes[new_qti].next_overlay = overlay;
+                       new_qti = overlay;
+               }
+done: // matches is not amused, but sulix is nice and moved it inside the #ifdef for him.
+               m_count++;
+               PropagateQuadChanges(qti);
+       }
+       return m_count;
+#else // words fail me (still not amused)
+       return (m_count++);
+#endif
+       
 }
 
 unsigned Document::AddBezierData(const Bezier & bezier)
@@ -338,10 +458,10 @@ unsigned Document::AddBezierData(const Bezier & bezier)
        return m_objects.beziers.size()-1;
 }
 
-unsigned Document::AddGroupData(const Group & group)
+unsigned Document::AddPathData(const Path & path)
 {
-       m_objects.groups.push_back(group);
-       return m_objects.groups.size()-1;
+       m_objects.paths.push_back(path);
+       return m_objects.paths.size()-1;
 }
 
 void Document::DebugDumpObjects()
@@ -392,12 +512,12 @@ static void GetXYPair(const string & d, Real & x, Real & y, unsigned & i,const s
 {
        string token("");
        while (GetToken(d, token, i, delims) == ",");
-       x = strtod(token.c_str(),NULL);
+       x = RealFromStr(token);
        if (GetToken(d, token, i, delims) != ",")
        {
                Fatal("Expected \",\" seperating x,y pair");
        }
-       y = strtod(GetToken(d, token, i, delims).c_str(),NULL);
+       y = RealFromStr(GetToken(d,token,i,delims));
 }
 
 static bool GetKeyValuePair(const string & d, string & key, string & value, unsigned & i, const string & delims = "()[],{}<>;:=")
@@ -460,11 +580,11 @@ void Document::ParseSVGTransform(const string & s, SVGMatrix & transform)
                }
                else if (command == "scale")
                {
-                       delta.a = (strtod(GetToken(s,token,i).c_str(), NULL));
+                       delta.a = RealFromStr(GetToken(s,token,i));
                        GetToken(s, token, i);
                        if (token == ",")
                        {
-                               delta.d = (strtod(GetToken(s,token,i).c_str(), NULL));
+                               delta.d = RealFromStr(GetToken(s,token,i));
                                assert(GetToken(s, token, i) == ")");
                        }
                        else
@@ -495,11 +615,48 @@ void Document::ParseSVGTransform(const string & s, SVGMatrix & transform)
        }
 }
 
+inline Colour ParseColourString(const string & colour_str)
+{
+       Colour c(0,0,0,0);
+       if (colour_str == "red")
+               c = {255,0,0,255};
+       else if (colour_str == "blue")
+               c = {0,0,255,255};
+       else if (colour_str == "green")
+               c = {0,255,0,255};
+       else if (colour_str == "black")
+               c = {0,0,0,255};
+       else if (colour_str == "white")
+               c = {255,255,255,255};
+       else if (colour_str.size() == 7 && colour_str[0] == '#')
+       {
+               //Debug("Parse colour string: \"%s\"", colour_str.c_str());
+               char comp[3] = {colour_str[1], colour_str[2], '\0'};
+               c.r = strtoul(comp, NULL, 16);
+               comp[0] = colour_str[3]; comp[1] = colour_str[4];
+               c.g = strtoul(comp, NULL, 16);
+               comp[0] = colour_str[5]; comp[1] = colour_str[6];
+               c.b = strtoul(comp, NULL, 16);
+               c.a = 255;
+               //Debug("Colour is: %u, %u, %u, %u", c.r, c.g, c.b, c.a);
+       }
+       return c;
+}
+
 void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
 {
        //Debug("Parse node <%s>", root.name());
 
-               
+       
+       // Centre the SVGs
+       if (strcmp(root.name(),"svg") == 0)
+       {
+               Real ww = RealFromStr(root.attribute("width").as_string());
+               Real hh = RealFromStr(root.attribute("height").as_string());
+               parent_transform.e -= parent_transform.a * ww/Real(2);
+               parent_transform.f -= parent_transform.d * hh/Real(2);
+       }
+       
        for (pugi::xml_node child = root.first_child(); child; child = child.next_sibling())
        {
                SVGMatrix transform(parent_transform);  
@@ -524,9 +681,9 @@ void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
                        //Debug("Path data attribute is \"%s\"", d.c_str());
                        bool closed = false;
                        pair<unsigned, unsigned> range = ParseSVGPathData(d, transform, closed);
-                       if (closed)
+                       if (true && range.first < m_count && range.second < m_count)//(closed)
                        {
-                               Colour c(0,0,0,0);
+                               
                                string colour_str("");
                                map<string, string> style;
                                if (child.attribute("style"))
@@ -543,41 +700,39 @@ void Document::ParseSVGNode(pugi::xml_node & root, SVGMatrix & parent_transform)
                                {
                                        colour_str = style["fill"];
                                }
-                               if (colour_str == "red")
-                                       c = {1,0,0,1};
-                               else if (colour_str == "blue")
-                                       c = {0,0,1,1};
-                               else if (colour_str == "green")
-                                       c = {0,1,0,1};
-                               else if (colour_str == "black")
-                                       c = {0,0,0,1};
-                               else if (colour_str == "white")
-                                       c = {1,1,1,1};
-                               else if (colour_str.size() == 7 && colour_str[0] == '#')
+                               Colour fill = ParseColourString(colour_str);
+                               Colour stroke = fill;
+                       
+                               if (child.attribute("stroke"))
+                               {
+                                       colour_str = child.attribute("stroke").as_string();
+                                       stroke = ParseColourString(colour_str);
+                               }
+                               else if (style.find("stroke") != style.end())
                                {
-                                       Debug("Parse colour string: \"%s\"", colour_str.c_str());
-                                       char comp[2] = {colour_str[1], colour_str[2]};
-                                       c.r = Real(strtoul(comp, NULL, 16))/Real(255);
-                                       comp[0] = colour_str[3]; comp[1] = colour_str[4];
-                                       c.g = Real(strtoul(comp, NULL, 16))/Real(255);
-                                       comp[0] = colour_str[5]; comp[1] = colour_str[6];
-                                       c.b = Real(strtoul(comp, NULL, 16))/Real(255);
-                                       c.a = 1;
-                                       Debug("Colour is: %f, %f, %f, %f", Float(c.r), Float(c.g), Float(c.b), Float(c.a));
+                                       colour_str = style["stroke"];
+                                       stroke = ParseColourString(colour_str);
                                }
                                
+                               
                                // Determin shading alpha
                                if (child.attribute("fill-opacity"))
                                {
-                                       c.a = child.attribute("fill-opacity").as_float();
+                                       fill.a = 255*child.attribute("fill-opacity").as_float();
                                }
                                else if (style.find("fill-opacity") != style.end())
                                {
-                                       c.a = strtod(style["fill-opacity"].c_str(), NULL);
+                                       fill.a = 255*strtod(style["fill-opacity"].c_str(), NULL);
                                }
-                               
-                                       Debug("fill-opacity is %f", Float(c.a));
-                               AddGroup(range.first, range.second, c);
+                               if (child.attribute("stroke-opacity"))
+                               {
+                                       stroke.a = 255*child.attribute("stroke-opacity").as_float();
+                               }
+                               else if (style.find("stroke-opacity") != style.end())
+                               {
+                                       stroke.a = 255*strtod(style["stroke-opacity"].c_str(), NULL);
+                               }
+                               AddPath(range.first, range.second, fill, stroke);
                        }
                        
                }
@@ -679,11 +834,11 @@ void Document::LoadSVG(const string & filename, const Rect & bounds)
        if (!result)
                Error("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
                
-       Debug("Loaded XML - %s", result.description());
+       Debug("Loaded XML from \"%s\" - %s", filename.c_str(), result.description());
        
        input.close();
                                                // a c e, b d f
-       SVGMatrix transform = {bounds.w, 0,bounds.x, 0,bounds.h,bounds.y};
+       SVGMatrix transform = {bounds.w,,bounds.x, 0,bounds.h,bounds.y};
        ParseSVGNode(doc_xml, transform);
 }
 
@@ -729,9 +884,9 @@ pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGM
                if (command == "m" || command == "M")
                {
                        //Debug("Construct moveto command");
-                       Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                       Real dx = RealFromStr(GetToken(d,token,i,delims));
                        assert(GetToken(d,token,i,delims) == ",");
-                       Real dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                       Real dy = RealFromStr(GetToken(d,token,i,delims));
                        
                        x[0] = (relative) ? x[0] + dx : dx;
                        y[0] = (relative) ? y[0] + dy : dy;
@@ -744,25 +899,25 @@ pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGM
                else if (command == "c" || command == "C" || command == "q" || command == "Q")
                {
                        //Debug("Construct curveto command");
-                       Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                       Real dx = RealFromStr(GetToken(d,token,i,delims));
                        assert(GetToken(d,token,i,delims) == ",");
-                       Real dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                       Real dy = RealFromStr(GetToken(d,token,i,delims));
                        
                        x[1] = (relative) ? x[0] + dx : dx;
                        y[1] = (relative) ? y[0] + dy : dy;
                        
-                       dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                       dx = RealFromStr(GetToken(d,token,i,delims));
                        assert(GetToken(d,token,i,delims) == ",");
-                       dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                       dy = RealFromStr(GetToken(d,token,i,delims));
                        
                        x[2] = (relative) ? x[0] + dx : dx;
                        y[2] = (relative) ? y[0] + dy : dy;
                        
                        if (command != "q" && command != "Q")
                        {
-                               dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                               dx = RealFromStr(GetToken(d,token,i,delims));
                                assert(GetToken(d,token,i,delims) == ",");
-                               dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                               dy = RealFromStr(GetToken(d,token,i,delims));
                                x[3] = (relative) ? x[0] + dx : dx;
                                y[3] = (relative) ? y[0] + dy : dy;
                        }
@@ -795,12 +950,12 @@ pair<unsigned, unsigned> Document::ParseSVGPathData(const string & d, const SVGM
                {
                        //Debug("Construct lineto command, relative %d", relative);
                
-                       Real dx = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
-                       Real dy;
+                       Real dx = RealFromStr(GetToken(d,token,i,delims));
+                       Real dy = 0;
                        if (command == "l" || command == "L")
                        {
                                assert(GetToken(d,token,i,delims) == ",");
-                               dy = Real(strtod(GetToken(d,token,i,delims).c_str(),NULL));
+                               dy = RealFromStr(GetToken(d,token,i,delims));
                        }
                        else if (command == "v" || command == "V")
                        {
@@ -906,7 +1061,8 @@ void Document::AddText(const string & text, Real scale, Real x, Real y)
        //Real y0(y);
        int ascent = 0, descent = 0, line_gap = 0;
        stbtt_GetFontVMetrics(&m_font, &ascent, &descent, &line_gap);
-       float font_scale = scale / (float)(ascent - descent);
+       Real font_scale = scale;
+       font_scale /= Real(ascent - descent);
        Real y_advance = Real(font_scale) * Real(ascent - descent + line_gap);
        for (unsigned i = 0; i < text.size(); ++i)
        {
@@ -924,9 +1080,9 @@ void Document::AddText(const string & text, Real scale, Real x, Real y)
                {
                        kerning = stbtt_GetCodepointKernAdvance(&m_font, text[i-1], text[i]);
                }
-               x += Real(font_scale) * Real(kerning);
+               x += font_scale * Real(kerning);
                AddFontGlyphAtPoint(&m_font, text[i], font_scale, x, y);
-               x += Real(font_scale) * Real(advance_width);
+               x += font_scale * Real(advance_width);
        }
 }
 
@@ -982,9 +1138,81 @@ void Document::AddFontGlyphAtPoint(stbtt_fontinfo *font, int character, Real sca
        
        if (start_index < m_count && end_index < m_count)
        {
-               AddGroup(start_index, end_index);
+               AddPath(start_index, end_index);
        }
-       Debug("Added Glyph \"%c\" at %f %f, scale %f", (char)character, Float(x), Float(y), Float(scale));
+       //Debug("Added Glyph \"%c\" at %f %f, scale %f", (char)character, Float(x), Float(y), Float(scale));
 
        stbtt_FreeShape(font, instructions);
 }
+
+void Document::TransformObjectBounds(const SVGMatrix & transform)
+{
+       for (unsigned i = 0; i < m_count; ++i)
+       {
+               TransformXYPair(m_objects.bounds[i].x, m_objects.bounds[i].y, transform);
+               m_objects.bounds[i].w *= transform.a;
+               m_objects.bounds[i].h *= transform.d;
+       }
+}
+
+void Document::TranslateObjects(const Real & dx, const Real & dy, ObjectType type)
+{
+       #ifdef TRANSFORM_BEZIERS_TO_PATH
+               for (unsigned i = 0; i < m_objects.paths.size(); ++i)
+               {
+                       Path & p = m_objects.paths[i];
+                       p.m_bounds.x += dx;
+                       p.m_bounds.y += dy;
+               }
+               return;
+       #endif  
+       
+       for (unsigned i = 0; i < m_count; ++i)
+       {
+               if (type == NUMBER_OF_OBJECT_TYPES || m_objects.types[i] == type)
+               {
+                       m_objects.bounds[i].x += dx;
+                       m_objects.bounds[i].y += dy;
+               }
+       }
+}
+
+void Document::ScaleObjectsAboutPoint(const Real & x, const Real & y, const Real & scale_amount, ObjectType type)
+{
+       #ifdef TRANSFORM_BEZIERS_TO_PATH
+               for (unsigned i = 0; i < m_objects.paths.size(); ++i)
+               {
+                       Path & p = m_objects.paths[i];
+                       p.m_bounds.w /= scale_amount;
+                       p.m_bounds.h /= scale_amount;
+                       p.m_bounds.x -= x;
+                       p.m_bounds.x /= scale_amount;
+                       p.m_bounds.x += x;
+                       p.m_bounds.y -= y;
+                       p.m_bounds.y /= scale_amount;
+                       p.m_bounds.y += y;
+               }
+               return;
+       #endif
+       
+       for (unsigned i = 0; i < m_count; ++i)
+       {
+               if (type != NUMBER_OF_OBJECT_TYPES && m_objects.types[i] != type)
+                       continue;
+               
+               m_objects.bounds[i].w /= scale_amount;
+               m_objects.bounds[i].h /= scale_amount;
+               //m_objects.bounds[i].x = x + (m_objects.bounds[i].x-x)/scale_amount;
+               //m_objects.bounds[i].y = y + (m_objects.bounds[i].y-x)/scale_amount;
+               m_objects.bounds[i].x -= x;
+               m_objects.bounds[i].x /= scale_amount;
+               m_objects.bounds[i].x += x;
+               
+               m_objects.bounds[i].y -= y;
+               m_objects.bounds[i].y /= scale_amount;
+               m_objects.bounds[i].y += y;
+       }
+
+}
+
+

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