Global snap to grid.

src/main.cpp

@@ -25,8 +25,6 @@
 #include <stdio.h>
 #include <cmath>
 #include <ranges>
-#include <algorithm>
-#include <iterator>
 #include <memory>
 
 using json = nlohmann::json;
@@ -170,6 +168,7 @@ int main(){
 
 	VEC_SPTR_Node copied_nodes;
 	
+	Vec2Df modified_mouse;
 	
 	while(!WindowShouldClose()){
 
@@ -193,7 +192,35 @@ int main(){
 
 		Vec2Df mouse_delta = {GetMouseDelta().x, GetMouseDelta().y};
         Vec2Df delta = mouse_delta * (-1.0f/camera.zoom);
-		
+
+		if(IsKeyDown(KEY_LEFT_CONTROL)) {
+			modified_mouse.x = round(mouse_pos.x / app.settings.grid) * app.settings.grid;
+			modified_mouse.y = round(mouse_pos.y / app.settings.grid) * app.settings.grid;
+		} else if(IsKeyDown(KEY_LEFT_SHIFT)){
+			float steps = round((dragNode->neighbors.front()->position.dist(mouse_pos)) / app.settings.grid) * app.settings.grid;
+			if(dragNode->neighbors.size() > 1){
+				Vec2Df dn1 = dragNode->neighbors[0]->position;
+				Vec2Df dn2 = dragNode->neighbors[1]->position;
+				Vec2Df v1_orth = dn1.center(dn2);
+
+				if(dn1.x < dn2.x) std::swap(dn1,dn2);
+
+				float dist = dn1.dist(dn2);
+				float dist_orth = std::sqrt(std::pow(steps,2) - std::pow(dist/2,2));
+
+				if(mouse_pos.y < v1_orth.y) dist_orth *= -1;
+
+				Vec2Df v1_orth_t = v1_orth + (dn1-dn2).norm().orth() * dist_orth;
+				DrawLineV(dn1, dn2, VS_COLOR_RED);
+				DrawLineV(v1_orth, v1_orth_t, VS_COLOR_RED);
+				DrawCircleV(v1_orth, 3.0f, VS_COLOR_RED);
+				dragNode->position = v1_orth_t;
+			} else if(!dragNode->neighbors.empty()){
+				float pol_r = steps;
+				float pol_theta = Vector2Angle(Vec2Df{1,0},(mouse_pos - dragNode->neighbors.front()->position));
+				Vec2Df polar = VISEQ::VMATH::polarToCartesian(pol_r, pol_theta); 
+				dragNode->position = dragNode->neighbors.front()->position + polar;
+			}
 	//	auto dragging_nodes = app.gm.nodes | RANGE_FILTER([](SPTR_Node n) { return n->dragging;});
 		/*auto connecting_nodes = app.gm.nodes | RANGE_FILTER([](SPTR_Node n) { return n->connecting;});*/
 		/*auto selected_nodes = app.gm.nodes | RANGE_FILTER([](SPTR_Node n) { return n->selected && !n->picked_up;}) | std::ranges::to<VEC_SPTR_Node>();*/