From f08ed21b3be552ac66bbb5fdcb92d4ccc7c439fc Mon Sep 17 00:00:00 2001
From: Sylvain Thery <sylvain@thery.pipo>
Date: Wed, 7 Nov 2012 14:03:13 +0100
Subject: [PATCH] one drawer sublist function added

---
 include/Utils/drawer.h |  6 ++++++
 src/Utils/drawer.cpp   | 21 +++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/Utils/drawer.h b/include/Utils/drawer.h
index 4dbe8d75..9579e6de 100644
--- a/include/Utils/drawer.h
+++ b/include/Utils/drawer.h
@@ -142,6 +142,12 @@ public:
 	 */
 	void callSubLists(std::vector<int> indices, float opacity);
 
+	/**
+	 * call a set of sub-lists
+	 */
+	void callSubLists(int first, int nb, float opacity);
+
+
 	/**
 	 * use as glLineWidth
 	 */
diff --git a/src/Utils/drawer.cpp b/src/Utils/drawer.cpp
index aefd6d9f..2fcecffa 100644
--- a/src/Utils/drawer.cpp
+++ b/src/Utils/drawer.cpp
@@ -208,6 +208,27 @@ void Drawer::callSubList(int index, float opacity)
 	m_shader->disableVertexAttribs();
 }
 
+void Drawer::callSubLists(int first, int nb, float opacity)
+{
+	m_shader->setOpacity(opacity);
+	m_shader->enableVertexAttribs();
+
+	int last = first+nb;
+	for (int i = first; i< last; ++i)
+		if (i < int(m_begins.size()))
+		{
+			PrimParam* pp = & (m_begins[i]);
+
+			if (pp->mode == GL_POINTS)
+				glPointSize(pp->width);
+			if ((pp->mode == GL_LINES) || (pp->mode == GL_LINE_LOOP))
+				glLineWidth(pp->width);
+			glDrawArrays(pp->mode, pp->begin, pp->nb);
+		}
+
+	m_shader->disableVertexAttribs();
+}
+
 void Drawer::callSubLists(std::vector<int> indices, float opacity)
 {
 	m_shader->setOpacity(opacity);
-- 
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