summaryrefslogtreecommitdiff
path: root/src/projection.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/projection.cc')
-rw-r--r--src/projection.cc221
1 files changed, 20 insertions, 201 deletions
diff --git a/src/projection.cc b/src/projection.cc
index f41ba56..8497405 100644
--- a/src/projection.cc
+++ b/src/projection.cc
@@ -24,8 +24,8 @@
*
*/
+#include "projectionnode.h"
#include "module.h"
-#include "node.h"
#include "context.h"
#include "printutils.h"
#include "builtin.h"
@@ -34,6 +34,8 @@
#include "polyset.h"
#include "export.h"
#include "progress.h"
+#include "visitor.h"
+#include "PolySetEvaluator.h"
#ifdef ENABLE_CGAL
# include <CGAL/assertions_behaviour.h>
@@ -41,6 +43,7 @@
#endif
#include <assert.h>
+#include <sstream>
#include <QApplication>
#include <QTime>
@@ -53,18 +56,6 @@ public:
virtual AbstractNode *evaluate(const Context *ctx, const ModuleInstantiation *inst) const;
};
-class ProjectionNode : public AbstractPolyNode
-{
-public:
- int convexity;
- bool cut_mode;
- ProjectionNode(const ModuleInstantiation *mi) : AbstractPolyNode(mi) {
- cut_mode = false;
- }
- virtual PolySet *render_polyset(render_mode_e mode) const;
- virtual QString dump(QString indent) const;
-};
-
AbstractNode *ProjectionModule::evaluate(const Context *ctx, const ModuleInstantiation *inst) const
{
ProjectionNode *node = new ProjectionNode(inst);
@@ -92,207 +83,35 @@ AbstractNode *ProjectionModule::evaluate(const Context *ctx, const ModuleInstant
return node;
}
-void register_builtin_projection()
-{
- builtin_modules["projection"] = new ProjectionModule();
-}
-
-#ifdef ENABLE_CGAL
-
-PolySet *ProjectionNode::render_polyset(render_mode_e) const
+PolySet *ProjectionNode::evaluate_polyset(render_mode_e mode, PolySetEvaluator *evaluator) const
{
- QString key = mk_cache_id();
- if (PolySet::ps_cache.contains(key)) {
- PRINT(PolySet::ps_cache[key]->msg);
- return PolySet::ps_cache[key]->ps->link();
- }
-
- print_messages_push();
-
- PolySet *ps = new PolySet();
- ps->convexity = this->convexity;
- ps->is2d = true;
-
- CGAL_Nef_polyhedron N;
- N.dim = 3;
- CGAL::Failure_behaviour old_behaviour = CGAL::set_error_behaviour(CGAL::THROW_EXCEPTION);
- try {
- foreach(AbstractNode *v, this->children) {
- if (v->modinst->tag_background)
- continue;
- N.p3 += v->render_cgal_nef_polyhedron().p3;
- }
- }
- catch (CGAL::Assertion_exception e) {
- PRINTF("ERROR: Illegal polygonal object - make sure all polygons are defined with the same winding order. Skipping affected object.");
- CGAL::set_error_behaviour(old_behaviour);
+ if (!evaluator) {
+ PRINTF("WARNING: No suitable PolySetEvaluator found for %s module!", this->name().c_str());
+ PolySet *ps = new PolySet();
+ ps->is2d = true;
return ps;
}
- CGAL::set_error_behaviour(old_behaviour);
-
- if (cut_mode)
- {
- PolySet *cube = new PolySet();
- double infval = 1e8, eps = 0.1;
- double x1 = -infval, x2 = +infval, y1 = -infval, y2 = +infval, z1 = 0, z2 = eps;
-
- cube->append_poly(); // top
- cube->append_vertex(x1, y1, z2);
- cube->append_vertex(x2, y1, z2);
- cube->append_vertex(x2, y2, z2);
- cube->append_vertex(x1, y2, z2);
-
- cube->append_poly(); // bottom
- cube->append_vertex(x1, y2, z1);
- cube->append_vertex(x2, y2, z1);
- cube->append_vertex(x2, y1, z1);
- cube->append_vertex(x1, y1, z1);
-
- cube->append_poly(); // side1
- cube->append_vertex(x1, y1, z1);
- cube->append_vertex(x2, y1, z1);
- cube->append_vertex(x2, y1, z2);
- cube->append_vertex(x1, y1, z2);
-
- cube->append_poly(); // side2
- cube->append_vertex(x2, y1, z1);
- cube->append_vertex(x2, y2, z1);
- cube->append_vertex(x2, y2, z2);
- cube->append_vertex(x2, y1, z2);
-
- cube->append_poly(); // side3
- cube->append_vertex(x2, y2, z1);
- cube->append_vertex(x1, y2, z1);
- cube->append_vertex(x1, y2, z2);
- cube->append_vertex(x2, y2, z2);
-
- cube->append_poly(); // side4
- cube->append_vertex(x1, y2, z1);
- cube->append_vertex(x1, y1, z1);
- cube->append_vertex(x1, y1, z2);
- cube->append_vertex(x1, y2, z2);
- CGAL_Nef_polyhedron Ncube = cube->render_cgal_nef_polyhedron();
- cube->unlink();
-
- // N.p3 *= CGAL_Nef_polyhedron3(CGAL_Plane(0, 0, 1, 0), CGAL_Nef_polyhedron3::INCLUDED);
- N.p3 *= Ncube.p3;
- if (!N.p3.is_simple()) {
- PRINTF("WARNING: Body of projection(cut = true) isn't valid 2-manifold! Modify your design..");
- goto cant_project_non_simple_polyhedron;
- }
-
- PolySet *ps3 = new PolySet();
- cgal_nef3_to_polyset(ps3, &N);
- Grid2d<int> conversion_grid(GRID_COARSE);
- for (int i = 0; i < ps3->polygons.size(); i++) {
- for (int j = 0; j < ps3->polygons[i].size(); j++) {
- double x = ps3->polygons[i][j].x;
- double y = ps3->polygons[i][j].y;
- double z = ps3->polygons[i][j].z;
- if (z != 0)
- goto next_ps3_polygon_cut_mode;
- if (conversion_grid.align(x, y) == i+1)
- goto next_ps3_polygon_cut_mode;
- conversion_grid.data(x, y) = i+1;
- }
- ps->append_poly();
- for (int j = 0; j < ps3->polygons[i].size(); j++) {
- double x = ps3->polygons[i][j].x;
- double y = ps3->polygons[i][j].y;
- conversion_grid.align(x, y);
- ps->insert_vertex(x, y);
- }
- next_ps3_polygon_cut_mode:;
- }
- ps3->unlink();
- }
- else
- {
- if (!N.p3.is_simple()) {
- PRINTF("WARNING: Body of projection(cut = false) isn't valid 2-manifold! Modify your design..");
- goto cant_project_non_simple_polyhedron;
- }
- PolySet *ps3 = new PolySet();
- cgal_nef3_to_polyset(ps3, &N);
- CGAL_Nef_polyhedron np;
- np.dim = 2;
- for (int i = 0; i < ps3->polygons.size(); i++)
- {
- int min_x_p = -1;
- double min_x_val = 0;
- for (int j = 0; j < ps3->polygons[i].size(); j++) {
- double x = ps3->polygons[i][j].x;
- if (min_x_p < 0 || x < min_x_val) {
- min_x_p = j;
- min_x_val = x;
- }
- }
- int min_x_p1 = (min_x_p+1) % ps3->polygons[i].size();
- int min_x_p2 = (min_x_p+ps3->polygons[i].size()-1) % ps3->polygons[i].size();
- double ax = ps3->polygons[i][min_x_p1].x - ps3->polygons[i][min_x_p].x;
- double ay = ps3->polygons[i][min_x_p1].y - ps3->polygons[i][min_x_p].y;
- double at = atan2(ay, ax);
- double bx = ps3->polygons[i][min_x_p2].x - ps3->polygons[i][min_x_p].x;
- double by = ps3->polygons[i][min_x_p2].y - ps3->polygons[i][min_x_p].y;
- double bt = atan2(by, bx);
-
- double eps = 0.000001;
- if (fabs(at - bt) < eps || (fabs(ax) < eps && fabs(ay) < eps) ||
- (fabs(bx) < eps && fabs(by) < eps)) {
- // this triangle is degenerated in projection
- continue;
- }
+ print_messages_push();
- std::list<CGAL_Nef_polyhedron2::Point> plist;
- for (int j = 0; j < ps3->polygons[i].size(); j++) {
- double x = ps3->polygons[i][j].x;
- double y = ps3->polygons[i][j].y;
- CGAL_Nef_polyhedron2::Point p = CGAL_Nef_polyhedron2::Point(x, y);
- if (at > bt)
- plist.push_front(p);
- else
- plist.push_back(p);
- }
- np.p2 += CGAL_Nef_polyhedron2(plist.begin(), plist.end(),
- CGAL_Nef_polyhedron2::INCLUDED);
- }
- DxfData dxf(np);
- dxf_tesselate(ps, &dxf, 0, true, false, 0);
- dxf_border_to_ps(ps, &dxf);
- ps3->unlink();
- }
+ PolySet *ps = evaluator->evaluatePolySet(*this, mode);
-cant_project_non_simple_polyhedron:
- PolySet::ps_cache.insert(key, new PolySet::ps_cache_entry(ps->link()));
print_messages_pop();
return ps;
}
-#else // ENABLE_CGAL
-
-PolySet *ProjectionNode::render_polyset(render_mode_e) const
+std::string ProjectionNode::toString() const
{
- PRINT("WARNING: Found projection() statement but compiled without CGAL support!");
- PolySet *ps = new PolySet();
- ps->is2d = true;
- return ps;
-}
+ std::stringstream stream;
-#endif // ENABLE_CGAL
+ stream << "projection(cut = " << (this->cut_mode ? "true" : "false")
+ << ", convexity = " << this->convexity << ")";
-QString ProjectionNode::dump(QString indent) const
-{
- if (dump_cache.isEmpty()) {
- QString text;
- text.sprintf("projection(cut = %s, convexity = %d) {\n",
- this->cut_mode ? "true" : "false", this->convexity);
- foreach (AbstractNode *v, this->children)
- text += v->dump(indent + QString("\t"));
- text += indent + "}\n";
- ((AbstractNode*)this)->dump_cache = indent + QString("n%1: ").arg(idx) + text;
- }
- return dump_cache;
+ return stream.str();
}
+void register_builtin_projection()
+{
+ builtin_modules["projection"] = new ProjectionModule();
+}
contact: Jan Huwald // Impressum