fix render

Raymond Fei · Raymond Fei · commit b0143f4ac6d9 · 2022-01-13T22:42:08.000-08:00
diff --git a/apic2d/fluidsim.cpp b/apic2d/fluidsim.cpp
@@ -1035,6 +1035,7 @@ void FluidSim::render() {
   if (draw_velocities_) {
     glColor3f(1, 0, 0);
     scalar crit = dx_ * dx_ * 100.0f;
+    glBegin(GL_LINES);
     for (int j = 0; j < nj_; ++j) {
       for (int i = 0; i < ni_; ++i) {
         Vector2s pos = Vector2s((i + 0.5) * dx_, (j + 0.5) * dx_) + origin_;
@@ -1046,6 +1047,7 @@ void FluidSim::render() {
         }
       }
     }
+    glEnd();
   }
 
   if (draw_particles_) {

Original file line number	Diff line number	Diff line change
`@@ -1035,6 +1035,7 @@ void FluidSim::render() {`
`1035`	`1035`	`if (draw_velocities_) {`
`1036`	`1036`	`glColor3f(1, 0, 0);`
`1037`	`1037`	`scalar crit = dx_ * dx_ * 100.0f;`
	`1038`	`+ glBegin(GL_LINES);`
`1038`	`1039`	`for (int j = 0; j < nj_; ++j) {`
`1039`	`1040`	`for (int i = 0; i < ni_; ++i) {`
`1040`	`1041`	`Vector2s pos = Vector2s((i + 0.5) * dx_, (j + 0.5) * dx_) + origin_;`
`@@ -1046,6 +1047,7 @@ void FluidSim::render() {`
`1046`	`1047`	`}`
`1047`	`1048`	`}`
`1048`	`1049`	`}`
	`1050`	`+ glEnd();`
`1049`	`1051`	`}`
`1050`	`1052`
`1051`	`1053`	`if (draw_particles_) {`