From 1657f19c05c1e5d59e1bc2d415ded0bd93e3ae22 Mon Sep 17 00:00:00 2001
From: pgovyadi <pgovyadi@gmail.com>
Date: Thu, 22 Sep 2016 15:33:11 -0500
Subject: [PATCH] fixed selective visualization that only shows the fibers near the last line cliked. Should make segmentation much easier, changes to the glObj class

---
 stim/visualization/glObj.h | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 51 insertions(+), 11 deletions(-)

diff --git a/stim/visualization/glObj.h b/stim/visualization/glObj.h
index 1eeab52..40e7175 100644
--- a/stim/visualization/glObj.h
+++ b/stim/visualization/glObj.h
@@ -43,11 +43,8 @@ private:
 	}
 
 	void
-	Create(GLenum mode, bool blend = false, float opacity = 1.0, stim::vec3<float> point = stim::vec<float>(-10000.0, -10000.0, -10000.0))
+	Create(GLenum mode, bool blend = false, float opacity = 1.0)
 	{
-//		GLuint selectBuf[2048];
-//		GLint hits;
-//		glSelectBuffer(2048, selectBuf);
 		
 		if(blend)
 		{
@@ -57,7 +54,6 @@ private:
 		int len = (int) stim::obj<T>::numL();
 		std::vector< stim::vec<float> > line;
 		glNewList(dList, GL_COMPILE);
-	//	glColor3f(0.0, 1.0, 0.0);
 		glLineWidth(3.5);
 		for(int i = 0; i < len; i++){
 			line = stim::obj<T>::getL_V(i);
@@ -66,14 +62,13 @@ private:
 				glLoadName(i);
 			}
 			if(blend == false)
+			{
 				glColor3f(0.0, 1.0, 0.05);
-
-			else if(blend && point[0] < -9999.9)
+			}
+			else
 			{
 				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++){
@@ -91,6 +86,51 @@ private:
 		CHECK_OPENGL_ERROR
 	}
 
+	///Method for drawing selectively opaque things.
+	void
+	Create(GLenum mode, stim::vec3<float> point)
+	{
+		float l, opacity;
+		glEnable(GL_BLEND);
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+		int len = (int) stim::obj<T>::numL();
+		std::vector< stim::vec<float> > line;
+		glNewList(dList, GL_COMPILE);
+		glLineWidth(3.5);
+		for(int i = 0; i < len; i++){
+			line = stim::obj<T>::getL_V(i);
+			if(mode == GL_SELECT)
+			{
+				glLoadName(i);
+			}
+
+			glBegin(GL_LINE_STRIP);
+			for(int j = 0; j < line.size(); j++){
+
+				l = sqrt(pow((point[0] - line[j][0]),2) + pow((point[1] - line[j][1]),2) + pow((point[2] - line[j][2]),2));
+				if(l < 10)
+				{
+					opacity = 1.0;
+				} else if( l > 40) {
+					opacity = 0.0;
+				} else {
+					opacity = l*(-1.0/30.0) + 4.0/3.0;
+				}
+
+				glColor4f(50.0/256.0,205.0/256.0, 50.0/256.0, opacity);		///Dark Green.
+				glVertex3f(
+					line[j][0],
+					line[j][1],
+					line[j][2]
+					);
+			}
+			glEnd();
+		}
+		glDisable(GL_BLEND);
+		glEndList();
+		CHECK_OPENGL_ERROR
+	}
+
 public:
 	glObj()
 	{
@@ -111,7 +151,7 @@ public:
 	{
 	//	glPopMatrix();
 		init();
-		Create(mode, true, 1.0, point);
+		Create(mode, point);
 	//	glPushMatrix();
 	}
 
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