SvgTransformScope::SvgTransformScope(clan::Canvas &canvas, const clan::Mat4f &transform, bool transform_active) : canvas(canvas), transform_active(transform_active) { old_transform = canvas.get_transform(); canvas.mult_transform(transform); }
SvgTransformScope::SvgTransformScope(clan::Canvas &canvas, clan::DomElement &e) : canvas(canvas) { try { clan::Mat4d mat = clan::Mat4d::identity(); SvgAttributeReader transform(e, "transform"); while (!transform.is_end()) { clan::Mat4d t; if (transform.is_keyword("matrix")) { transform.get_keyword("matrix"); transform.get_operator("("); t = clan::Mat4d::identity(); t.matrix[0] = transform.get_number(); t.matrix[1] = transform.get_number(); t.matrix[4] = transform.get_number(); t.matrix[5] = transform.get_number(); t.matrix[12] = transform.get_number(); t.matrix[13] = transform.get_number(); transform.get_operator(")"); } else if (transform.is_keyword("translate")) { transform.get_keyword("translate"); transform.get_operator("("); double tx = transform.get_number(); double ty = transform.is_number() ? transform.get_number() : 0.0; transform.get_operator(")"); t = clan::Mat4d::translate(tx, ty, 0.0); } else if (transform.is_keyword("scale")) { transform.get_keyword("scale"); transform.get_operator("("); double sx = transform.get_number(); double sy = transform.is_number() ? transform.get_number() : sx; transform.get_operator(")"); t = clan::Mat4d::scale(sx, sy, 0.0); } else if (transform.is_keyword("rotate")) { transform.get_keyword("rotate"); transform.get_operator("("); double a = transform.get_number() * clan::PI / 180.0; t = clan::Mat4d::identity(); t.matrix[0] = std::cos(a); t.matrix[1] = std::sin(a); t.matrix[4] = -t.matrix[1]; t.matrix[5] = -t.matrix[0]; if (transform.is_number()) { double tx = transform.get_number(); double ty = transform.is_number() ? transform.get_number() : 0.0; t = clan::Mat4d::translate(tx, ty, 0.0) * t * clan::Mat4d::translate(-tx, -ty, 0.0); } transform.get_operator(")"); } else if (transform.is_keyword("skewX")) { transform.get_keyword("skewX"); transform.get_operator("("); double a = transform.get_number() * clan::PI / 180.0; transform.get_operator(")"); t = clan::Mat4d::identity(); t.matrix[4] = std::tan(a); } else if (transform.is_keyword("skewY")) { transform.get_keyword("skewY"); transform.get_operator("("); double a = transform.get_number() * clan::PI / 180.0; transform.get_operator(")"); t = clan::Mat4d::identity(); t.matrix[1] = std::tan(a); } else { transform.parse_error("expected transform keyword"); } mat = mat * t; if (transform.is_operator(",")) transform.get_operator(","); } old_transform = canvas.get_transform(); canvas.mult_transform(clan::Mat4f(mat)); transform_active = true; } catch (clan::Exception &) { } }
SvgTransformScope::SvgTransformScope(clan::Canvas &canvas, clan::DomElement &e) : canvas(canvas) { old_transform = canvas.get_transform(); canvas.mult_transform(parse_transform(e, transform_active)); }