| -rw-r--r-- | agg-plot/plot.h | 124 |
diff --git a/agg-plot/plot.h b/agg-plot/plot.h index 645857f6..3d2f0e58 100644 --- a/agg-plot/plot.h +++ b/agg-plot/plot.h @@ -10,6 +10,7 @@ #include "drawables.h" #include "canvas.h" #include "units.h" +#include "resource-manager.h" #include "agg_conv_transform.h" #include "agg_color_rgba.h" @@ -17,43 +18,45 @@ #include "agg_ellipse.h" #include "agg_array.h" -struct drawable { - vertex_source* vs; - agg::rgba8 color; +template<class VertexSource, class resource_manager = no_management> +class plot { - drawable(): vs(NULL), color() {}; - drawable(vertex_source* vs, agg::rgba8 c): vs(vs), color(c) {}; + class container { + public: + VertexSource* vs; + agg::rgba8 color; - ~drawable() {}; + container(): vs(NULL), color() {}; + container(VertexSource* vs, agg::rgba8 c): vs(vs), color(c) {}; - void bounding_box(double *x1, double *y1, double *x2, double *y2) - { - vertex_source& vsi = get_vertex_source(); - vsi.bounding_box(x1, y1, x2, y2); - }; + ~container() {}; - vertex_source& get_vertex_source() { return *vs; }; + void bounding_box(double *x1, double *y1, double *x2, double *y2) + { + VertexSource& vsi = get_vertex_source(); + vsi.bounding_box(x1, y1, x2, y2); + }; -/* - void draw(canvas& canvas, agg::trans_affine& t) - { - vs_type& vsi = get_vertex_source(); - agg::conv_transform<vs_type> p(vsi, t); - canvas.draw(p, color); + VertexSource& get_vertex_source() { return *vs; }; }; -*/ -}; -class plot { public: plot() : m_elements(), m_trans(), m_bbox_updated(true) { }; - virtual ~plot() {}; + virtual ~plot() + { + for (unsigned j; j < m_elements.size(); j++) + { + container& d = m_elements[j]; + resource_manager::dispose(d.vs); + } + }; - void add(vertex_source* vs, agg::rgba8 color) + void add(VertexSource* vs, agg::rgba8 color) { - drawable d(vs, color); + container d(vs, color); m_elements.add(d); m_bbox_updated = false; + resource_manager::acquire(vs); }; virtual void draw(canvas &canvas) @@ -69,11 +72,82 @@ protected: static void viewport_scale(agg::trans_affine& trans); - agg::pod_bvector<drawable> m_elements; + agg::pod_bvector<container> m_elements; agg::trans_affine m_trans; // bounding box bool m_bbox_updated; }; +template<class VS, class RM> +void plot<VS,RM>::draw_elements(canvas &canvas) +{ + agg::trans_affine m = m_trans; + viewport_scale(m); + canvas.scale(m); + + for (unsigned j = 0; j < m_elements.size(); j++) + { + container& d = m_elements[j]; + VS& vs = d.get_vertex_source(); + vs.apply_transform(m, 1.0); + canvas.draw(vs, d.color); + } +} + +template<class VS, class RM> +void plot<VS,RM>::trans_matrix_update() +{ + if (! m_bbox_updated) + { + double x1, y1, x2, y2; + bounding_box(&x1, &y1, &x2, &y2); + + double fx = x2 - x1, fy = y2 - y1; + m_trans.reset(); + m_trans.scale(1/fx, 1/fy); + m_trans.translate(-x1/fx, -y1/fy); + m_bbox_updated = true; + } +} + +template<class VS, class RM> +void plot<VS,RM>::bounding_box(double *x1, double *y1, double *x2, double *y2) +{ + bool is_set = false; + + for (unsigned j = 0; j < m_elements.size(); j++) + { + container& d = m_elements[j]; + + double sx1, sy1, sx2, sy2; + d.vs->bounding_box(&sx1, &sy1, &sx2, &sy2); + + if (! is_set) + { + *x1 = sx1; + *x2 = sx2; + *y1 = sy1; + *y2 = sy2; + + is_set = true; + } + else if (sx2 > *x2 || sx1 < *x1 || sy2 > *y2 || sy1 < *y1) + { + *x1 = min(sx1, *x1); + *y1 = min(sy1, *y1); + *x2 = max(sx2, *x2); + *y2 = max(sy2, *y2); + } + } +} + +template<class VS, class RM> +void plot<VS,RM>::viewport_scale(agg::trans_affine& m) +{ + const double xoffs = 0.09375, yoffs = 0.09375; + static agg::trans_affine rsz(1-2*xoffs, 0.0, 0.0, 1-2*yoffs, xoffs, yoffs); + trans_affine_compose (m, rsz); +} + #endif |