1 files changed, 96 insertions, 0 deletions
diff --git a/hacks/glx/buildlwo.c b/hacks/glx/buildlwo.c
new file mode 100644
index 0000000..c20c9e2
--- /dev/null
+++ b/hacks/glx/buildlwo.c
@@ -0,0 +1,96 @@
+
+#if 0
+static const char sccsid[] = "@(#)buildlwo.c	4.02 97/04/20 xlockmore";
+#endif
+
+/*-
+ * buildlwo.c: Lightwave Object Display List Builder for OpenGL
+ *
+ * This module can be called by any GL mode wishing to use
+ * objects created in NewTek's Lightwave 3D.  The objects must
+ * first be converted to C source with my converter "lw2ogl".
+ * If other people are interested in this, I will put up a
+ * web page for it at http://www.netaxs.com/~emackey/lw2ogl/
+ *
+ * by Ed Mackey, 4/19/97
+ *
+ */
+
+#ifndef STANDALONE
+#include "xlock.h"
+#endif
+
+#ifdef USE_GL
+
+#include "buildlwo.h"
+
+GLuint
+BuildLWO(int wireframe, const struct lwo *object)
+{
+	GLuint      dl_num;
+	const GLfloat *pnts, *normals, *grab;
+	const unsigned short int *pols;
+        GLfloat three[3];
+	int         p, num_pnts = 0;
+
+	dl_num = glGenLists(1);
+	if (!dl_num)
+		return (0);
+
+	pnts = object->pnts;
+	normals = object->normals;
+	pols = object->pols;
+
+	glNewList(dl_num, GL_COMPILE);
+
+	if (!pols) {
+		num_pnts = object->num_pnts;
+		glBegin(GL_POINTS);
+		for (p = 0; p < num_pnts; ++p) {
+			three[0] = *(pnts++);
+			three[1] = *(pnts++);
+			three[2] = *(pnts++);
+			glVertex3fv(three);
+		}
+		glEnd();
+	} else
+		for (;;) {
+			if (num_pnts <= 0) {
+				num_pnts = *pols + 2;
+				if (num_pnts < 3)
+					break;
+				if (num_pnts == 3) {
+					glBegin(GL_POINTS);
+				} else if (num_pnts == 4) {
+					glBegin(GL_LINES);
+				} else {
+					three[0] = *(normals++);
+					three[1] = *(normals++);
+					three[2] = *(normals++);
+					glNormal3fv(three);
+					if (wireframe)
+						glBegin(GL_LINE_LOOP);
+					else
+						glBegin(GL_POLYGON);
+				}
+			} else if (num_pnts == 1) {
+				glEnd();
+			} else {
+				grab = pnts + ((int) (*pols) * 3);
+				three[0] = *(grab++);
+				three[1] = *(grab++);
+				three[2] = *(grab);
+				glVertex3fv(three);
+			}
+			--num_pnts;
+			++pols;
+		}
+
+	glEndList();
+
+	return (dl_num);
+}
+
+#endif /* USE_GL */
+
+/* End of buildlwo.c */