From acc30a5e60e9c691fb440ac85a054db408207ea1 Mon Sep 17 00:00:00 2001
From: pgovyadi <pgovyadi@gmail.com>
Date: Wed, 21 Sep 2016 18:10:39 -0500
Subject: [PATCH] Added the ability for glObj to render with blended lines

---
 stim/visualization/glObj.h | 33 ++++++++++++++++++++++++++++-----
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/stim/visualization/glObj.h b/stim/visualization/glObj.h
index e0be584..2493d0a 100644
--- a/stim/visualization/glObj.h
+++ b/stim/visualization/glObj.h
@@ -43,7 +43,7 @@ private:
 	}
 
 	void
-	Create(GLenum mode, bool blend = false)
+	Create(GLenum mode, bool blend = false, float opacity = 1.0, stim::vec3<float> point = stim::vec<float>(-10000.0, -10000.0, -10000.0))
 	{
 //		GLuint selectBuf[2048];
 //		GLint hits;
@@ -65,7 +65,15 @@ private:
 			{
 				glLoadName(i);
 			}
-			glColor3f(0.0, 1.0, 0.05);
+			if(blend == false)
+				glColor3f(0.0, 1.0, 0.05);
+
+			else if(blend && point[0] < -9999.9)
+			{
+				glColor4f(50.0/256.0,205.0/256.0, 50.0/256.0, opacity);		///Dark Green.
+			} else {
+//				???????
+			}
 			//glColor3ub(rand()%255, rand()%255, rand()%255);
 			glBegin(GL_LINE_STRIP);
 			for(int j = 0; j < line.size(); j++){
@@ -90,11 +98,19 @@ public:
 	}
 
 	void
-	createFromSelf(GLenum mode = GL_RENDER, bool blend = false)
+	createFromSelf(GLenum mode = GL_RENDER, bool blend = false, float opacity = 1.0)
+	{
+	//	glPopMatrix();
+		init();
+		Create(mode, blend, opacity);
+	//	glPushMatrix();
+	}
+
+	createFromSelf(GLenum mode = GL_RENDER, bool blend = false, stim::vec3<float> point)
 	{
 	//	glPopMatrix();
 		init();
-		Create(mode, blend);
+		Create(mode, blend, 1.0, point);
 	//	glPushMatrix();
 	}
 
@@ -111,9 +127,16 @@ public:
 	
 
 	void
-	Render()
+	Render(bool blend = false)
 	{
+		if(blend)
+		{
+			glEnable(GL_BLEND);
+			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+		}
 		glCallList(dList);
+		if(blend)
+			glDisable(GL_BLEND);
 		CHECK_OPENGL_ERROR
 	}
 
--
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