Extracted OpenCSG code to separate files

git-svn-id: http://svn.clifford.at/openscad/trunk@434 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 84 insertions, 0 deletions

diff --git a/src/render-opencsg.cc b/src/render-opencsg.cc
new file mode 100644
index 0000000..f6d26ac
--- /dev/null
+++ b/src/render-opencsg.cc
@@ -0,0 +1,84 @@
+#include "render-opencsg.h"
+#include "polyset.h"
+#include "csgterm.h"
+
+class OpenCSGPrim : public OpenCSG::Primitive
+{
+public:
+	OpenCSGPrim(OpenCSG::Operation operation, unsigned int convexity) :
+			OpenCSG::Primitive(operation, convexity) { }
+	PolySet *p;
+	double *m;
+	int csgmode;
+	virtual void render() {
+		glPushMatrix();
+		glMultMatrixd(m);
+		p->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m);
+		glPopMatrix();
+	}
+};
+
+void renderCSGChainviaOpenCSG(CSGChain *chain, GLint *shaderinfo, bool highlight, bool background)
+{
+	std::vector<OpenCSG::Primitive*> primitives;
+	int j = 0;
+	for (int i = 0;; i++)
+	{
+		bool last = i == chain->polysets.size();
+
+		if (last || chain->types[i] == CSGTerm::TYPE_UNION)
+		{
+			if (j+1 != i) {
+				OpenCSG::render(primitives);
+				glDepthFunc(GL_EQUAL);
+			}
+			if (shaderinfo)
+				glUseProgram(shaderinfo[0]);
+			for (; j < i; j++) {
+				double *m = chain->matrices[j];
+				glPushMatrix();
+				glMultMatrixd(m);
+				int csgmode = chain->types[j] == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
+				if (highlight) {
+					chain->polysets[j]->render_surface(PolySet::COLORMODE_HIGHLIGHT, PolySet::csgmode_e(csgmode + 20), m, shaderinfo);
+				} else if (background) {
+					chain->polysets[j]->render_surface(PolySet::COLORMODE_BACKGROUND, PolySet::csgmode_e(csgmode + 10), m, shaderinfo);
+				} else if (m[16] >= 0 || m[17] >= 0 || m[18] >= 0 || m[19] >= 0) {
+					// User-defined color from source
+					glColor4d(m[16], m[17], m[18], m[19]);
+					if (shaderinfo) {
+						glUniform4f(shaderinfo[1], m[16], m[17], m[18], m[19]);
+						glUniform4f(shaderinfo[2], (m[16]+1)/2, (m[17]+1)/2, (m[18]+1)/2, 1.0);
+					}
+					chain->polysets[j]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m, shaderinfo);
+				} else if (chain->types[j] == CSGTerm::TYPE_DIFFERENCE) {
+					chain->polysets[j]->render_surface(PolySet::COLORMODE_CUTOUT, PolySet::csgmode_e(csgmode), m, shaderinfo);
+				} else {
+					chain->polysets[j]->render_surface(PolySet::COLORMODE_MATERIAL, PolySet::csgmode_e(csgmode), m, shaderinfo);
+				}
+				glPopMatrix();
+			}
+			if (shaderinfo)
+				glUseProgram(0);
+			for (unsigned int k = 0; k < primitives.size(); k++) {
+				delete primitives[k];
+			}
+			glDepthFunc(GL_LEQUAL);
+			primitives.clear();
+		}
+
+		if (last)
+			break;
+
+		OpenCSGPrim *prim = new OpenCSGPrim(chain->types[i] == CSGTerm::TYPE_DIFFERENCE ?
+				OpenCSG::Subtraction : OpenCSG::Intersection, chain->polysets[i]->convexity);
+		prim->p = chain->polysets[i];
+		prim->m = chain->matrices[i];
+		prim->csgmode = chain->types[i] == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
+		if (highlight)
+			prim->csgmode += 20;
+		else if (background)
+			prim->csgmode += 10;
+		primitives.push_back(prim);
+	}
+}