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#include "CSGTextRenderer.h"
#include <string>
#include <map>
#include <list>
#include "visitor.h"
#include "state.h"
#include "module.h" // FIXME: Temporarily for ModuleInstantiation
#include "csgnode.h"
#include "transformnode.h"
#include <sstream>
#include <iostream>
#include <assert.h>
bool CSGTextRenderer::isCached(const AbstractNode &node)
{
return this->cache.contains(node);
}
/*!
Modifies target by applying op to target and src:
target = target [op] src
*/
void
CSGTextRenderer::process(string &target, const string &src, OpenSCADOperator op)
{
// if (target.dim != 2 && target.dim != 3) {
// assert(false && "Dimension of Nef polyhedron must be 2 or 3");
// }
switch (op) {
case OPENSCAD_UNION:
target += "+" + src;
break;
case OPENSCAD_INTERSECTION:
target += "*" + src;
break;
case OPENSCAD_DIFFERENCE:
target += "-" + src;
break;
case OPENSCAD_MINKOWSKI:
target += "M" + src;
break;
default:
assert(false);
}
}
void CSGTextRenderer::applyToChildren(const AbstractNode &node, OpenSCADOperator op)
{
std::stringstream stream;
stream << node.name() << node.index();
string N = stream.str();
if (this->visitedchildren[node.index()].size() > 0) {
// FIXME: assert that cache contains nodes in code below
bool first = true;
for (ChildList::const_iterator iter = this->visitedchildren[node.index()].begin();
iter != this->visitedchildren[node.index()].end();
iter++) {
const AbstractNode *chnode = *iter;
assert(this->cache.contains(*chnode));
// FIXME: Don't use deep access to modinst members
if (chnode->modinst->tag_background) continue;
if (first) {
N += "(" + this->cache[*chnode];
// if (N.dim != 0) first = false; // FIXME: when can this happen?
first = false;
} else {
process(N, this->cache[*chnode], op);
}
chnode->progress_report();
}
N += ")";
}
this->cache.insert(node, N);
}
/*
Typical visitor behavior:
o In prefix: Check if we're cached -> prune
o In postfix: Check if we're cached -> don't apply operator to children
o In postfix: addToParent()
*/
Response CSGTextRenderer::visit(State &state, const AbstractNode &node)
{
if (state.isPrefix() && isCached(node)) return PruneTraversal;
if (state.isPostfix()) {
if (!isCached(node)) applyToChildren(node, OPENSCAD_UNION);
addToParent(state, node);
}
return ContinueTraversal;
}
Response CSGTextRenderer::visit(State &state, const AbstractIntersectionNode &node)
{
if (state.isPrefix() && isCached(node)) return PruneTraversal;
if (state.isPostfix()) {
if (!isCached(node)) applyToChildren(node, OPENSCAD_INTERSECTION);
addToParent(state, node);
}
return ContinueTraversal;
}
Response CSGTextRenderer::visit(State &state, const CsgNode &node)
{
if (state.isPrefix() && isCached(node)) return PruneTraversal;
if (state.isPostfix()) {
if (!isCached(node)) {
applyToChildren(node, node.type);
}
addToParent(state, node);
}
return ContinueTraversal;
}
Response CSGTextRenderer::visit(State &state, const TransformNode &node)
{
if (state.isPrefix() && isCached(node)) return PruneTraversal;
if (state.isPostfix()) {
if (!isCached(node)) {
// First union all children
applyToChildren(node, OPENSCAD_UNION);
// FIXME: Then apply transform
}
addToParent(state, node);
}
return ContinueTraversal;
}
// FIXME: RenderNode: Union over children + some magic
// FIXME: CgaladvNode: Iterate over children. Special operation
// FIXME: Subtypes of AbstractPolyNode:
// ProjectionNode
// DxfLinearExtrudeNode
// DxfRotateExtrudeNode
// (SurfaceNode)
// (PrimitiveNode)
Response CSGTextRenderer::visit(State &state, const AbstractPolyNode &node)
{
if (state.isPrefix() && isCached(node)) return PruneTraversal;
if (state.isPostfix()) {
if (!isCached(node)) {
// FIXME: Manage caching
// FIXME: Will generate one single Nef polyhedron (no csg ops necessary)
string N = node.name();
this->cache.insert(node, N);
// std::cout << "Insert: " << N << "\n";
// std::cout << "Node: " << cacheid.toStdString() << "\n\n";
}
addToParent(state, node);
}
return ContinueTraversal;
}
/*!
Adds ourself to out parent's list of traversed children.
Call this for _every_ node which affects output during the postfix traversal.
*/
void CSGTextRenderer::addToParent(const State &state, const AbstractNode &node)
{
assert(state.isPostfix());
this->visitedchildren.erase(node.index());
if (state.parent()) {
this->visitedchildren[state.parent()->index()].push_back(&node);
}
}
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