From dbba704d1caefae4d86204bd7cf24e0193b66c52 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Thu, 8 Nov 2018 22:21:46 +0100
Subject: [PATCH] linepatterns:: added circles, radii, meridians, parallels

---
 hyper.h      |  6 +++++-
 pattern2.cpp | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/hyper.h b/hyper.h
index 617074c5..9fbf0ce6 100644
--- a/hyper.h
+++ b/hyper.h
@@ -2225,7 +2225,11 @@ namespace linepatterns {
     patBigRings,
     patHorocycles,
     patTriOther,
-    patDual
+    patDual,
+    patMeridians,
+    patParallels,
+    patCircles,
+    patRadii
     };
   
   void clearAll();
diff --git a/pattern2.cpp b/pattern2.cpp
index 23f5f59c..06b4bfc9 100644
--- a/pattern2.cpp
+++ b/pattern2.cpp
@@ -1938,6 +1938,10 @@ namespace linepatterns {
     {patTriTree, "triangle grid: tree edges", 0xFFFFFF00},
     {patTriOther, "triangle grid: other edges", 0xFFFFFF00},
 
+    {patCircles, "circles", 0xFFFFFF00},
+    {patRadii, "radii", 0xFFFFFF00},
+    {patMeridians, "meridians", 0xFFFFFF00},
+    {patParallels, "parallels", 0xFFFFFF00},
     };
 
   void clearAll() {
@@ -2193,6 +2197,46 @@ namespace linepatterns {
         drawPattern(lp.id, col, c, V);
         }
       }
+    
+    transmatrix V = gmatrix[cwt.at];
+    for(auto& lp: patterns) {
+      color_t col = lp.color;  
+      if(!(col & 255)) continue;        
+      if(lp.id == patCircles) 
+        for(int i=15; i<=180; i+=15) {
+          for(int j=0; j<360; j+=15) {
+            for(int k=0; k<=15; k++) 
+              curvepoint(xspinpush0((j+k) * degree, i * degree));
+            queuecurve(col, 0, PPR::LINE).V=V;
+            }
+          }
+      if(lp.id == patRadii)
+        for(int i=0; i<360; i+=15) {
+          for(int j=0; j<180; j+=15) {
+            for(int k=0; k<=15; k++)
+              curvepoint(xspinpush0(i * degree, (j+k) * degree));
+            queuecurve(col, 0, PPR::LINE).V=V;
+            }
+          }
+      if(lp.id == patMeridians) {
+        for(int j=-180; j<=180; j+=15) {
+          for(int i=-90; i<90; i+=15) {
+            for(int k=0; k<=15; k++)
+              curvepoint(V * xpush(j * degree) * ypush0((i+k) * degree));
+            queuecurve(col, 0, PPR::LINE).V=V;
+            }
+          }
+        }
+      if(lp.id == patParallels) {
+        for(int i=-90; i<=90; i += 15) {
+          for(int j=-180; j<180; j+=15) {
+            for(int k=0; k<=15; k++) 
+              curvepoint(V * xpush((j+k) * degree) * ypush0(i * degree));
+            queuecurve(col, 0, PPR::LINE).V=V;
+            }
+          }
+        }
+      }
     }
   
   int numpat = 0;