reorganized file structure layout. more to follow...

git-svn-id: http://svn.clifford.at/openscad/trunk@364 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 201 insertions, 0 deletions

diff --git a/src/surface.cc b/src/surface.cc
new file mode 100644
index 0000000..4dc3d98
--- /dev/null
+++ b/src/surface.cc
@@ -0,0 +1,201 @@
+/*
+ *  OpenSCAD (www.openscad.at)
+ *  Copyright (C) 2009  Clifford Wolf <clifford@clifford.at>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#define INCLUDE_ABSTRACT_NODE_DETAILS
+
+#include "openscad.h"
+#include "printutils.h"
+
+#include <QFile>
+
+class SurfaceModule : public AbstractModule
+{
+public:
+	SurfaceModule() { }
+	virtual AbstractNode *evaluate(const Context *ctx, const ModuleInstantiation *inst) const;
+};
+
+class SurfaceNode : public AbstractPolyNode
+{
+public:
+	QString filename;
+	bool center;
+	int convexity;
+	SurfaceNode(const ModuleInstantiation *mi) : AbstractPolyNode(mi) { }
+	virtual PolySet *render_polyset(render_mode_e mode) const;
+	virtual QString dump(QString indent) const;
+};
+
+AbstractNode *SurfaceModule::evaluate(const Context *ctx, const ModuleInstantiation *inst) const
+{
+	SurfaceNode *node = new SurfaceNode(inst);
+	node->center = false;
+	node->convexity = 1;
+
+	QVector<QString> argnames = QVector<QString>() << "file" << "center" << "convexity";
+	QVector<Expression*> argexpr;
+
+	Context c(ctx);
+	c.args(argnames, argexpr, inst->argnames, inst->argvalues);
+
+	node->filename = c.lookup_variable("file").text;
+
+	Value center = c.lookup_variable("center", true);
+	if (center.type == Value::BOOL) {
+		node->center = center.b;
+	}
+
+	Value convexity = c.lookup_variable("convexity", true);
+	if (convexity.type == Value::NUMBER) {
+		node->convexity = (int)convexity.num;
+	}
+
+	return node;
+}
+
+void register_builtin_surface()
+{
+	builtin_modules["surface"] = new SurfaceModule();
+}
+
+PolySet *SurfaceNode::render_polyset(render_mode_e) const
+{
+	handle_dep(filename);
+	QFile f(filename);
+
+	if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+		PRINTF("WARNING: Can't open DXF file `%s'.", filename.toAscii().data());
+		return NULL;
+	}
+
+	int lines = 0, columns = 0;
+	QHash<QPair<int,int>,double> data;
+	double min_val = 0;
+
+	while (!f.atEnd())
+	{
+		QString line = QString(f.readLine()).remove("\n").remove("\r");
+		line.replace(QRegExp("^[ \t]+"), "");
+		line.replace(QRegExp("[ \t]+$"), "");
+
+		if (line.startsWith("#"))
+			continue;
+
+		QStringList fields = line.split(QRegExp("[ \t]+"));
+		for (int i = 0; i < fields.count(); i++) {
+			if (i >= columns)
+				columns = i + 1;
+			double v = fields[i].toDouble();
+			data[QPair<int,int>(lines, i)] = v;
+			min_val = fmin(v-1, min_val);
+		}
+		lines++;
+	}
+
+	PolySet *p = new PolySet();
+	p->convexity = convexity;
+
+	double ox = center ? -columns/2.0 : 0;
+	double oy = center ? -lines/2.0 : 0;
+
+	for (int i = 1; i < lines; i++)
+	for (int j = 1; j < columns; j++)
+	{
+		double v1 = data[QPair<int,int>(i-1, j-1)];
+		double v2 = data[QPair<int,int>(i-1, j)];
+		double v3 = data[QPair<int,int>(i, j-1)];
+		double v4 = data[QPair<int,int>(i, j)];
+		double vx = (v1 + v2 + v3 + v4) / 4;
+
+		p->append_poly();
+		p->append_vertex(ox + j-1, oy + i-1, v1);
+		p->append_vertex(ox + j, oy + i-1, v2);
+		p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
+
+		p->append_poly();
+		p->append_vertex(ox + j, oy + i-1, v2);
+		p->append_vertex(ox + j, oy + i, v4);
+		p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
+
+		p->append_poly();
+		p->append_vertex(ox + j, oy + i, v4);
+		p->append_vertex(ox + j-1, oy + i, v3);
+		p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
+
+		p->append_poly();
+		p->append_vertex(ox + j-1, oy + i, v3);
+		p->append_vertex(ox + j-1, oy + i-1, v1);
+		p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
+	}
+
+	for (int i = 1; i < lines; i++)
+	{
+		p->append_poly();
+		p->append_vertex(ox + 0, oy + i-1, min_val);
+		p->append_vertex(ox + 0, oy + i-1, data[QPair<int,int>(i-1, 0)]);
+		p->append_vertex(ox + 0, oy + i, data[QPair<int,int>(i, 0)]);
+		p->append_vertex(ox + 0, oy + i, min_val);
+
+		p->append_poly();
+		p->insert_vertex(ox + columns-1, oy + i-1, min_val);
+		p->insert_vertex(ox + columns-1, oy + i-1, data[QPair<int,int>(i-1, columns-1)]);
+		p->insert_vertex(ox + columns-1, oy + i, data[QPair<int,int>(i, columns-1)]);
+		p->insert_vertex(ox + columns-1, oy + i, min_val);
+	}
+
+	for (int i = 1; i < columns; i++)
+	{
+		p->append_poly();
+		p->insert_vertex(ox + i-1, oy + 0, min_val);
+		p->insert_vertex(ox + i-1, oy + 0, data[QPair<int,int>(0, i-1)]);
+		p->insert_vertex(ox + i, oy + 0, data[QPair<int,int>(0, i)]);
+		p->insert_vertex(ox + i, oy + 0, min_val);
+
+		p->append_poly();
+		p->append_vertex(ox + i-1, oy + lines-1, min_val);
+		p->append_vertex(ox + i-1, oy + lines-1, data[QPair<int,int>(lines-1, i-1)]);
+		p->append_vertex(ox + i, oy + lines-1, data[QPair<int,int>(lines-1, i)]);
+		p->append_vertex(ox + i, oy + lines-1, min_val);
+	}
+
+	p->append_poly();
+	for (int i = 0; i < columns-1; i++)
+		p->insert_vertex(ox + i, oy + 0, min_val);
+	for (int i = 0; i < lines-1; i++)
+		p->insert_vertex(ox + columns-1, oy + i, min_val);
+	for (int i = columns-1; i > 0; i--)
+		p->insert_vertex(ox + i, oy + lines-1, min_val);
+	for (int i = lines-1; i > 0; i--)
+		p->insert_vertex(ox + 0, oy + i, min_val);
+
+	return p;
+}
+
+QString SurfaceNode::dump(QString indent) const
+{
+	if (dump_cache.isEmpty()) {
+		QString text;
+		text.sprintf("surface(file = \"%s\", center = %s);\n",
+				filename.toAscii().data(), center ? "true" : "false");
+		((AbstractNode*)this)->dump_cache = indent + QString("n%1: ").arg(idx) + text;
+	}
+	return dump_cache;
+}
+