From: Nikita Kitaev Date: Sat, 7 Nov 2009 07:46:28 +0000 (-0800) Subject: Gradient support X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=d32cafc8ae3b109a07b5d0afe0ea97ee4562ea22;p=synfig.git Gradient support * Linear gradients should convert properly in all circumstances. * Radial gradients should convert properly when the focus and center are the same. --- diff --git a/synfig-core/src/modules/mod_svg/svg_parser.cpp b/synfig-core/src/modules/mod_svg/svg_parser.cpp index 6a5d12c..226f57e 100644 --- a/synfig-core/src/modules/mod_svg/svg_parser.cpp +++ b/synfig-core/src/modules/mod_svg/svg_parser.cpp @@ -289,7 +289,7 @@ Svg_parser::parser_graphics(const xmlpp::Node* node,xmlpp::Element* root,String if(nodename.compare("rect")==0 && typeFill!=0){ rect_simple(nodeElement,child_fill,fill,fill_opacity,opacity); if(typeFill==2){ - build_url (child_fill->add_child("layer"),fill,NULL); + build_url (child_fill,fill,NULL); } parser_effects(nodeElement,child_layer,parent_style,mtx); return; @@ -349,9 +349,9 @@ Svg_parser::parser_graphics(const xmlpp::Node* node,xmlpp::Element* root,String } if(typeFill==2){ //gradient in onto mode (fill) if (SVG_RESOLVE_BLINE) - build_url(child_fill->add_child("layer"),fill,mtx); + build_url(child_fill,fill,mtx); else - build_url(child_fill->add_child("layer"),fill,NULL); + build_url(child_fill,fill,NULL); } if(typeStroke!=0){//outline layer @@ -397,9 +397,9 @@ Svg_parser::parser_graphics(const xmlpp::Node* node,xmlpp::Element* root,String if(typeStroke==2){ //gradient in onto mode (stroke) if (SVG_RESOLVE_BLINE) - build_url(child_stroke->add_child("layer"),fill,mtx); + build_url(child_stroke,fill,mtx); else - build_url(child_stroke->add_child("layer"),fill,NULL); + build_url(child_stroke,fill,NULL); } if (SVG_RESOLVE_BLINE) parser_effects(nodeElement,child_layer,parent_style,NULL); @@ -939,6 +939,11 @@ Svg_parser::parser_path_d(String path_d,Matrix* mtx){ void Svg_parser::parser_effects(const xmlpp::Element* nodeElement,xmlpp::Element* root,String parent_style,Matrix* mtx){ + parser_transform(root, mtx); +} + +void +Svg_parser::parser_transform(xmlpp::Element* root,Matrix* mtx){ if (mtx) { xmlpp::Element *child_transform=root->add_child("layer"); child_transform->set_attribute("type","warp"); @@ -1037,9 +1042,6 @@ Svg_parser::find_colorStop(String name){ void Svg_parser::build_url(xmlpp::Element* root, String name,Matrix *mtx){ if(!name.empty()){ - if(lg.empty()&& rg.empty()) - root->get_parent()->remove_child(root); - int start=name.find_first_of("#")+1; int end=name.find_first_of(")"); String find= name.substr(start,end-start); @@ -1064,10 +1066,6 @@ Svg_parser::build_url(xmlpp::Element* root, String name,Matrix *mtx){ aux++; } } - if(!encounter) - root->get_parent()->remove_child(root); - }else{ - root->get_parent()->remove_child(root); } } void @@ -1086,65 +1084,133 @@ Svg_parser::build_stop_color(xmlpp::Element* root, std::list *stops) void Svg_parser::build_linearGradient(xmlpp::Element* root,LinearGradient* data,Matrix* mtx){ if(data){ - root->set_attribute("type","linear_gradient"); - root->set_attribute("active","true"); - root->set_attribute("desc","Gradient004"); - build_param (root->add_child("param"),"z_depth","real","0"); - build_param (root->add_child("param"),"amount","real","1"); + xmlpp::Element* gradient=root->add_child("layer"); + + gradient->set_attribute("type","linear_gradient"); + gradient->set_attribute("active","true"); + gradient->set_attribute("desc","Gradient004"); + build_param (gradient->add_child("param"),"z_depth","real","0"); + build_param (gradient->add_child("param"),"amount","real","1"); //straight onto - build_param (root->add_child("param"),"blend_method","integer","21"); + build_param (gradient->add_child("param"),"blend_method","integer","21"); float x1,y1,x2,y2; x1=data->x1; y1=data->y1; x2=data->x2; y2=data->y2; - if(mtx){ - transformPoint2D(mtx,&x1,&y1); - transformPoint2D(mtx,&x2,&y2); + + + if (mtx || data->transform){ + Matrix *mtx2=NULL; + if (mtx && data->transform){ + composeMatrix(&mtx2,mtx,data->transform); + }else if (mtx){ + mtx2=mtx; + }else if (data->transform){ + mtx2=data->transform; + } + //matrix transforms the gradient as a whole + //it does not preserve angles, so we cant' simply transform both points + float x3, y3, k; + //set point (x3,y3) on the same gradient line as (x2,y2) + //the gradient line is perpendicular to (x1,y1)(x2,y2) + x3=x2+(y2-y1); + y3=y2-(x2-x1); + //transform everything + transformPoint2D(mtx2,&x1,&y1); + transformPoint2D(mtx2,&x2,&y2); + transformPoint2D(mtx2,&x3,&y3); + + if (x2!=x3 && y2!=y3) {//divide by zero check + + //set k as slope between (x2,y2) and (x3,y3) + //k is the slope of gradient lines post-transformation + k=(y3-y2)/(x3-x2); + //set point (x2,y2) on the gradient line passing through (x3,y3) + //so that the line (x1,y1)(x2,y2) is perpendicular to (x2,y2)(x3,y3) + x2= (x3*k+x1/k+y1-y3)/(k+(1/k)); + y2= k*(x2-x3)+y3; + } else if (x2==x3 && y2!=y3) { + y2=y1; + } else if (x2!=x3 && y2==y3) { + x2=x1; + } else { + std::cout<<"SVG Import warning: gradient points equal each other"<add_child("param"),"p1",x1,y1); - build_vector (root->add_child("param"),"p2",x2,y2); + build_vector (gradient->add_child("param"),"p1",x1,y1); + build_vector (gradient->add_child("param"),"p2",x2,y2); //gradient link - xmlpp::Element *child=root->add_child("param"); - child->set_attribute("name","gradient"); - build_stop_color (child->add_child("gradient"),data->stops); - build_param (root->add_child("param"),"loop","bool","false"); - build_param (root->add_child("param"),"zigzag","bool","false"); + xmlpp::Element *child_stops=gradient->add_child("param"); + child_stops->set_attribute("name","gradient"); + build_stop_color (child_stops->add_child("gradient"),data->stops); + build_param (gradient->add_child("param"),"loop","bool","false"); + build_param (gradient->add_child("param"),"zigzag","bool","false"); } } void Svg_parser::build_radialGradient(xmlpp::Element* root,RadialGradient* data,Matrix* mtx){ -//not completed if(data){ - root->set_attribute("type","radial_gradient"); - root->set_attribute("active","true"); - build_param (root->add_child("param"),"z_depth","real","0"); - build_param (root->add_child("param"),"amount","real","1"); - //straight onto - build_param (root->add_child("param"),"blend_method","integer","21"); + xmlpp::Element* gradient; + + if (mtx || data->transform) { + xmlpp::Element* layer=root->add_child("layer"); + + layer->set_attribute("type","PasteCanvas"); + layer->set_attribute("active","true"); + layer->set_attribute("version","0.1"); + layer->set_attribute("desc","Composite"); + build_param (layer->add_child("param"),"z_depth","real","0"); + build_param (layer->add_child("param"),"amount","real","1"); + build_param (layer->add_child("param"),"blend_method","integer","21"); //straight onto + build_vector (layer->add_child("param"),"origin",0,0); + xmlpp::Element *child=layer->add_child("param"); + child->set_attribute("name","canvas"); + xmlpp::Element* child_layer=child->add_child("canvas"); + + gradient=child_layer->add_child("layer"); + build_param (gradient->add_child("param"),"blend_method","integer","0"); //composite + Matrix *mtx2=NULL; + if (mtx && data->transform){ + composeMatrix(&mtx2,mtx,data->transform); + }else if (mtx){ + mtx2=mtx; + }else if (data->transform){ + mtx2=data->transform; + } + parser_transform(child_layer,mtx2); + + }else { + gradient=root->add_child("layer"); + build_param (gradient->add_child("param"),"blend_method","integer","21"); //straight onto + } + + gradient->set_attribute("type","radial_gradient"); + gradient->set_attribute("active","true"); + build_param (gradient->add_child("param"),"z_depth","real","0"); + build_param (gradient->add_child("param"),"amount","real","1"); //gradient link - xmlpp::Element *child=root->add_child("param"); - child->set_attribute("name","gradient"); - build_stop_color (child->add_child("gradient"),data->stops); + xmlpp::Element *child_stops=gradient->add_child("param"); + child_stops->set_attribute("name","gradient"); + build_stop_color (child_stops->add_child("gradient"),data->stops); + //here the center point and radio float cx=data->cx; float cy=data->cy; float r =data->r; - //transform - if(mtx){ - transformPoint2D(mtx,&cx,&cy); - } + //adjust coor2vect (&cx,&cy); r=r/kux; - build_vector (root->add_child("param"),"center",cx,cy); - build_param (root->add_child("param"),"radius","real",r); + build_vector (gradient->add_child("param"),"center",cx,cy); + build_param (gradient->add_child("param"),"radius","real",r); - build_param (root->add_child("param"),"loop","bool","false"); - build_param (root->add_child("param"),"zigzag","bool","false"); + build_param (gradient->add_child("param"),"loop","bool","false"); + build_param (gradient->add_child("param"),"zigzag","bool","false"); } } @@ -1157,6 +1223,12 @@ Svg_parser::parser_linearGradient(const xmlpp::Node* node){ float x2 =atof(nodeElement->get_attribute_value("x2").data()); float y2 =atof(nodeElement->get_attribute_value("y2").data()); Glib::ustring link =nodeElement->get_attribute_value("href"); + Glib::ustring transform =nodeElement->get_attribute_value("gradientTransform"); + + //resolve transformations + Matrix* mtx=NULL; + if(!transform.empty()) + mtx=build_transform (transform); std::list *stops; if(!link.empty()){ @@ -1187,7 +1259,7 @@ Svg_parser::parser_linearGradient(const xmlpp::Node* node){ } } if(stops) - lg.push_back(newLinearGradient(id,x1,y1,x2,y2,stops)); + lg.push_back(newLinearGradient(id,x1,y1,x2,y2,stops,mtx)); } } @@ -1197,15 +1269,27 @@ Svg_parser::parser_radialGradient(const xmlpp::Node* node){ Glib::ustring id =nodeElement->get_attribute_value("id"); float cx =atof(nodeElement->get_attribute_value("cx").data()); float cy =atof(nodeElement->get_attribute_value("cy").data()); + float fx =atof(nodeElement->get_attribute_value("fx").data()); + float fy =atof(nodeElement->get_attribute_value("fy").data()); float r =atof(nodeElement->get_attribute_value("r").data()); Glib::ustring link =nodeElement->get_attribute_value("href");//basic + Glib::ustring transform =nodeElement->get_attribute_value("gradientTransform"); + + if (cx!=fx || cy!=fy) + std::cout<<"SVG Parser: ignoring focus attributes for radial gradient"; + + //resolve transformations + Matrix* mtx=NULL; + if(!transform.empty()) + mtx=build_transform (transform); + std::list *stops=NULL; if(!link.empty()){ //inkscape always use link, i dont need parser stops here, but it's posible stops=find_colorStop (link); } if(stops) - rg.push_back(newRadialGradient(id,cx,cy,r,stops)); + rg.push_back(newRadialGradient(id,cx,cy,r,stops,mtx)); } } @@ -1250,7 +1334,7 @@ Svg_parser::adjustGamma(float r,float g,float b,float a){ } LinearGradient* -Svg_parser::newLinearGradient(String name,float x1,float y1, float x2,float y2,std::list *stops){ +Svg_parser::newLinearGradient(String name,float x1,float y1, float x2,float y2,std::list *stops, Matrix* transform){ LinearGradient* data; data=(LinearGradient*)malloc(sizeof(LinearGradient)); sprintf(data->name,"%s",name.data()); @@ -1259,11 +1343,12 @@ Svg_parser::newLinearGradient(String name,float x1,float y1, float x2,float y2,s data->x2=x2; data->y2=y2; data->stops=stops; + data->transform=transform; return data; } RadialGradient* -Svg_parser::newRadialGradient(String name,float cx,float cy,float r,std::list *stops){ +Svg_parser::newRadialGradient(String name,float cx,float cy,float r,std::list *stops, Matrix* transform){ RadialGradient* data; data=(RadialGradient*)malloc(sizeof(RadialGradient)); sprintf(data->name,"%s",name.data()); @@ -1271,6 +1356,7 @@ Svg_parser::newRadialGradient(String name,float cx,float cy,float r,std::listcy=cy; data->r=r; data->stops=stops; + data->transform=transform; return data; } diff --git a/synfig-core/src/modules/mod_svg/svg_parser.h b/synfig-core/src/modules/mod_svg/svg_parser.h index 1c26bbe..dd68044 100644 --- a/synfig-core/src/modules/mod_svg/svg_parser.h +++ b/synfig-core/src/modules/mod_svg/svg_parser.h @@ -67,6 +67,7 @@ typedef struct linear_g{ char name[40]; float x1,x2,y1,y2; std::list *stops; //paradas de color + Matrix *transform; }LinearGradient; typedef struct radial_g{ char name[40]; @@ -76,6 +77,7 @@ typedef struct radial_g{ //if this value is omitted then will be = cx,cy float r; //radio radius std::list *stops; //paradas de color + Matrix *transform; }RadialGradient; typedef struct url_t{ @@ -129,13 +131,14 @@ private: //parser bucle void parser_layer(const xmlpp::Node* node,xmlpp::Element* root,String parent_style,Matrix* mtx); std::list > parser_polygon_path(Glib::ustring polygon_points, Matrix* mtx); void parser_effects(const xmlpp::Element* nodeElement,xmlpp::Element* root,String parent_style,Matrix* mtx); + void parser_transform(xmlpp::Element* root,Matrix* mtx); //defs void parser_defs(const xmlpp::Node* node); void parser_linearGradient(const xmlpp::Node* node); void parser_radialGradient(const xmlpp::Node* node); ColorStop* newColorStop(String color,float opacity,float pos); - LinearGradient* newLinearGradient(String name,float x1,float y1, float x2,float y2,std::list *stops); - RadialGradient* newRadialGradient(String name,float cx,float cy,float r,std::list *stops); + LinearGradient* newLinearGradient(String name,float x1,float y1, float x2,float y2,std::list *stops, Matrix* transform); + RadialGradient* newRadialGradient(String name,float cx,float cy,float r,std::list *stops, Matrix* transform); //builds urls void AdjustPointUrl(); std::list* find_colorStop(String name);