add diplay list to avoid waste

Jiaming Guo
1 parent def55315
Showing 1 changed file with 110 additions and 89 deletions Show diff stats
flow.h
@@ -160,14 +160,15 @@ namespace stim {
 #endif
 	template <typename T>
-	class flow : public stim::gl_network<T>{
+	class flow : public stim::gl_network<T> {
 	private:
-		
+
 		unsigned num_edge;
 		unsigned num_vertex;
-		
-		enum direction {UP, LEFT, DOWN, RIGHT};
+		GLuint dlist;					// display list for inlets/outlets connections
+
+		enum direction { UP, LEFT, DOWN, RIGHT };
 		// calculate the cofactor of elemen[row][col]
 		void get_minor(T** src, T** dest, int row, int col, int order) {
@@ -232,7 +233,7 @@ namespace stim {
 		using stim::network<T>::get_r;
 		using stim::network<T>::get_average_r;
 		using stim::network<T>::get_l;
-		
+
 		T** C;																	// Conductance
 		std::vector<typename stim::triple<unsigned, unsigned, float> > Q;		// volume flow rate
 		std::vector<T> QQ;														// Q' vector
@@ -292,11 +293,16 @@ namespace stim {
 			output.clear();
 			inlet.clear();
 			outlet.clear();
+
+			if (glIsList(dlist)) {
+				glDeleteLists(dlist, 1);					// delete display list for modify
+				glDeleteLists(dlist + 1, 1);
+			}
 		}
 		// copy radius from cylinder to flow
 		void set_radius(unsigned i, T radius) {
-			
+
 			for (unsigned j = 0; j < num_edge; j++) {
 				if (E[j].v[0] == i)
 					E[j].cylinder<T>::set_r(0, radius);
@@ -307,7 +313,7 @@ namespace stim {
 		// get the radii of vertex i
 		T get_radius(unsigned i) {
-			
+
 			unsigned tmp_e;				// edge index
 			unsigned tmp_v;				// vertex index in that edge
 			for (unsigned j = 0; j < num_edge; j++) {
@@ -326,7 +332,7 @@ namespace stim {
 		// get the velocity of pendant vertex i
 		T get_velocity(unsigned i) {
-		
+
 			unsigned tmp_e;				// edge index
 			for (unsigned j = 0; j < num_edge; j++) {
 				if (E[j].v[0] == i) {
@@ -400,7 +406,7 @@ namespace stim {
 			// get the inverse of conductance matrix
 			stim::matrix<float> _C(num_vertex, num_vertex);
 			inversion(C, num_vertex, _C.data());
-		
+
 			// get the pressure in the network
 			for (unsigned i = 0; i < num_vertex; i++) {
 				for (unsigned j = 0; j < num_vertex; j++) {
@@ -421,7 +427,7 @@ namespace stim {
 				Q[i].first = start_vertex;
 				Q[i].second = end_vertex;
-				
+
 				Q[i].third = ((float)stim::PI * std::pow(get_average_r(i), 4) * deltaP) / (8 * u * get_l(i));
 				v[i] = Q[i].third / ((float)stim::PI * std::pow(get_average_r(i), 2));
 			}
@@ -429,7 +435,7 @@ namespace stim {
 		// get the brewer color map based on velocity
 		void get_color_map(T& max_v, T& min_v, std::vector<unsigned char>& color, std::vector<unsigned> pendant_vertex) {
-			
+
 			unsigned num_edge = Q.size();
 			unsigned num_vertex = QQ.size();
@@ -441,7 +447,7 @@ namespace stim {
 			max_v = *std::max_element(abs_V.begin(), abs_V.end());
 			min_v = *std::min_element(abs_V.begin(), abs_V.end());
-			
+
 			// get the color map based on velocity range along the network
 			color.clear();
 			if (pendant_vertex.size() == 2 && num_edge - num_vertex + 1 <= 0) 		// only one inlet and one outlet
@@ -472,7 +478,7 @@ namespace stim {
 		// @param: current direct length between two vertices
 		// @param: desire length
 		void find_hilbert_order(T l, T d, int &order) {
-			
+
 			bool flag = false;
 			int o = 1;
 			T tmp;					// temp of length
@@ -489,7 +495,7 @@ namespace stim {
 		}
 		void move(unsigned i, T *c, direction dir, T dl, int feeder, bool invert) {
-			
+
 			int cof = (invert) ? -1 : 1;
 			switch (dir) {
@@ -510,7 +516,7 @@ namespace stim {
 			stim::vec3<T> tmp;
 			for (unsigned i = 0; i < 3; i++)
 				tmp[i] = c[i];
-			
+
 			if (feeder == 1)					// inlet main feeder
 				inlet[i].V.push_back(tmp);
 			else if (feeder == 0)				// outlet main feeder
@@ -518,8 +524,8 @@ namespace stim {
 		}
 		void hilbert_curve(unsigned i, T *c, int order, T dl, int feeder, bool invert, direction dir = DOWN) {
-			
-			if (order == 1) {			
+
+			if (order == 1) {
 				switch (dir) {
 				case UP:
 					move(i, c, DOWN, dl, feeder, invert);
@@ -542,7 +548,7 @@ namespace stim {
 					move(i, c, RIGHT, dl, feeder, invert);
 					break;
 				}
-				
+
 			}
 			else if (order > 1) {
 				switch (dir) {
@@ -717,7 +723,7 @@ namespace stim {
 		// draw solid sphere at every vertex
 		void glSolidSphere(T max_pressure, GLint subdivision) {
-			
+
 			// waste?
 			for (unsigned i = 0; i < num_edge; i++) {
 				for (unsigned j = 0; j < E[i].size(); j++) {
@@ -771,7 +777,7 @@ namespace stim {
 					r1 = get_r(i, j);
 					r2 = get_r(i, j + 1);
-					
+
 					// calculate the envelope caps
 					find_envelope(cp1, cp2, center1, center2, r1, r2, subdivision);
@@ -789,7 +795,7 @@ namespace stim {
 		// draw the flow direction as cone
 		void glSolidCone(GLint subdivision) {
-			
+
 			stim::vec3<T> tmp_d;									// direction
 			stim::vec3<T> center;									// cone hat center
 			stim::vec3<T> head;										// cone hat top
@@ -825,7 +831,7 @@ namespace stim {
 		// draw main feeder as solid cube
 		void glSolidCuboid(T length = 210.0f, T height = 10.0f) {
-			
+
 			T width;
 			stim::vec3<T> L = bb.A;						// get the bottom left corner
 			stim::vec3<T> U = bb.B;						// get the top right corner
@@ -886,84 +892,96 @@ namespace stim {
 		// draw the bridge as lines
 		void line_bridge() {
-			
-			for (unsigned i = 0; i < inlet.size(); i++) {
-				glBegin(GL_LINE_STRIP);
-				for (unsigned j = 0; j < inlet[i].V.size(); j++)
-					glVertex3f(inlet[i].V[j][0], inlet[i].V[j][1], inlet[i].V[j][2]);
-				glEnd();
-			}
-			for (unsigned i = 0; i < outlet.size(); i++) {
-				glBegin(GL_LINE_STRIP);
-				for (unsigned j = 0; j < outlet[i].V.size(); j++)
-					glVertex3f(outlet[i].V[j][0], outlet[i].V[j][1], outlet[i].V[j][2]);
-				glEnd();
+
+			if (!glIsList(dlist)) {
+				dlist = glGenLists(1);
+				glNewList(dlist, GL_COMPILE);
+				for (unsigned i = 0; i < inlet.size(); i++) {
+					glBegin(GL_LINE_STRIP);
+					for (unsigned j = 0; j < inlet[i].V.size(); j++)
+						glVertex3f(inlet[i].V[j][0], inlet[i].V[j][1], inlet[i].V[j][2]);
+					glEnd();
+				}
+				for (unsigned i = 0; i < outlet.size(); i++) {
+					glBegin(GL_LINE_STRIP);
+					for (unsigned j = 0; j < outlet[i].V.size(); j++)
+						glVertex3f(outlet[i].V[j][0], outlet[i].V[j][1], outlet[i].V[j][2]);
+					glEnd();
+				}
+				glFlush();
+				glEndList();
 			}
-			glFlush();
+			glCallList(dlist);
 		}
 		// draw the bridge as tubes
 		void tube_bridge(T subdivision, T radii = 5.0f) {
-			stim::vec3<T> dir;							// direction vector
-			stim::circle<T> unit_c;						// unit circle for finding the rotation start direction
-			std::vector<typename stim::vec3<T> > cp1;
-			std::vector<typename stim::vec3<T> > cp2;
-
-			for (unsigned i = 0; i < inlet.size(); i++) {
-				// render vertex as sphere
-				for (unsigned j = 1; j < inlet[i].V.size() - 1; j++) {
-					glPushMatrix();
-					glTranslatef(inlet[i].V[j][0], inlet[i].V[j][1], inlet[i].V[j][2]);
-					glutSolidSphere(radii, subdivision, subdivision);
-					glPopMatrix();
-				}
-				// render edge as cylinder
-				for (unsigned j = 0; j < inlet[i].V.size() - 1; j++) {
-					dir = inlet[i].V[j] - inlet[i].V[j + 1];
-					dir = dir.norm();
-					unit_c.rotate(dir);
-					stim::circle<T> c1(inlet[i].V[j], inlet[i].r, dir, unit_c.U);
-					stim::circle<T> c2(inlet[i].V[j + 1], inlet[i].r, dir, unit_c.U);
-					cp1 = c1.glpoints(subdivision);
-					cp2 = c2.glpoints(subdivision);
-
-					glBegin(GL_QUAD_STRIP);
-					for (unsigned k = 0; k < cp1.size(); k++) {
-						glVertex3f(cp1[k][0], cp1[k][1], cp1[k][2]);
-						glVertex3f(cp2[k][0], cp2[k][1], cp2[k][2]);
+			if (!glIsList(dlist + 1)) {
+				glNewList(dlist + 1, GL_COMPILE);
+
+				stim::vec3<T> dir;							// direction vector
+				stim::circle<T> unit_c;						// unit circle for finding the rotation start direction
+				std::vector<typename stim::vec3<T> > cp1;
+				std::vector<typename stim::vec3<T> > cp2;
+
+				for (unsigned i = 0; i < inlet.size(); i++) {
+					// render vertex as sphere
+					for (unsigned j = 1; j < inlet[i].V.size() - 1; j++) {
+						glPushMatrix();
+						glTranslatef(inlet[i].V[j][0], inlet[i].V[j][1], inlet[i].V[j][2]);
+						glutSolidSphere(radii, subdivision, subdivision);
+						glPopMatrix();
+					}
+					// render edge as cylinder
+					for (unsigned j = 0; j < inlet[i].V.size() - 1; j++) {
+						dir = inlet[i].V[j] - inlet[i].V[j + 1];
+						dir = dir.norm();
+						unit_c.rotate(dir);
+						stim::circle<T> c1(inlet[i].V[j], inlet[i].r, dir, unit_c.U);
+						stim::circle<T> c2(inlet[i].V[j + 1], inlet[i].r, dir, unit_c.U);
+						cp1 = c1.glpoints(subdivision);
+						cp2 = c2.glpoints(subdivision);
+
+						glBegin(GL_QUAD_STRIP);
+						for (unsigned k = 0; k < cp1.size(); k++) {
+							glVertex3f(cp1[k][0], cp1[k][1], cp1[k][2]);
+							glVertex3f(cp2[k][0], cp2[k][1], cp2[k][2]);
+						}
+						glEnd();
 					}
-					glEnd();
 				}
-			}
-			for (unsigned i = 0; i < outlet.size(); i++) {
-				// render vertex as sphere
-				for (unsigned j = 1; j < outlet[i].V.size() - 1; j++) {
-					glPushMatrix();
-					glTranslatef(outlet[i].V[j][0], outlet[i].V[j][1], outlet[i].V[j][2]);
-					glutSolidSphere(radii, subdivision, subdivision);
-					glPopMatrix();
-				}
-				// render edge as cylinder
-				for (unsigned j = 0; j < outlet[i].V.size() - 1; j++) {
-					dir = outlet[i].V[j] - outlet[i].V[j + 1];
-					dir = dir.norm();
-					unit_c.rotate(dir);
-					stim::circle<T> c1(outlet[i].V[j], outlet[i].r, dir, unit_c.U);
-					stim::circle<T> c2(outlet[i].V[j + 1], outlet[i].r, dir, unit_c.U);
-					cp1 = c1.glpoints(subdivision);
-					cp2 = c2.glpoints(subdivision);
-
-					glBegin(GL_QUAD_STRIP);
-					for (unsigned k = 0; k < cp1.size(); k++) {
-						glVertex3f(cp1[k][0], cp1[k][1], cp1[k][2]);
-						glVertex3f(cp2[k][0], cp2[k][1], cp2[k][2]);
+				for (unsigned i = 0; i < outlet.size(); i++) {
+					// render vertex as sphere
+					for (unsigned j = 1; j < outlet[i].V.size() - 1; j++) {
+						glPushMatrix();
+						glTranslatef(outlet[i].V[j][0], outlet[i].V[j][1], outlet[i].V[j][2]);
+						glutSolidSphere(radii, subdivision, subdivision);
+						glPopMatrix();
+					}
+					// render edge as cylinder
+					for (unsigned j = 0; j < outlet[i].V.size() - 1; j++) {
+						dir = outlet[i].V[j] - outlet[i].V[j + 1];
+						dir = dir.norm();
+						unit_c.rotate(dir);
+						stim::circle<T> c1(outlet[i].V[j], outlet[i].r, dir, unit_c.U);
+						stim::circle<T> c2(outlet[i].V[j + 1], outlet[i].r, dir, unit_c.U);
+						cp1 = c1.glpoints(subdivision);
+						cp2 = c2.glpoints(subdivision);
+
+						glBegin(GL_QUAD_STRIP);
+						for (unsigned k = 0; k < cp1.size(); k++) {
+							glVertex3f(cp1[k][0], cp1[k][1], cp1[k][2]);
+							glVertex3f(cp2[k][0], cp2[k][1], cp2[k][2]);
+						}
+						glEnd();
 					}
-					glEnd();
 				}
+				glEndList();
 			}
-		}
+			glCallList(dlist + 1);
+		}	
 		// draw gradient color bounding box outside the object
 		void bounding_box() {
@@ -1172,7 +1190,10 @@ namespace stim {
 		// automatically modify bridge to make it feasible
 		void modify_synthetic_connection(T viscosity, T rou, T radii = 5.0f) {
-			
+
+			glDeleteLists(dlist, 1);					// delete display list for modify
+			glDeleteLists(dlist + 1, 1);
+		
 			// because of radii change at the port vertex, there will be a pressure drop at that port
 			// it follows the bernoulli equation
 			// p1 + 1/2*rou*v1^2 + rou*g*h1 = p2 + 1/2*rou*v2^2 + rou*g*h2