Merge pull request gradientspace#6 from SutroMachine/origin-user-setting

Make the position of the build plate origin a user-accessible setting.

assemblers/BaseDepositionAssembler.cs

@@ -94,6 +94,10 @@ public BaseDepositionAssembler(GCodeBuilder useBuilder, FFFMachineInfo machineIn
 			extruderA = 0;
 			currentFeed = 0;
 
+            Vector2d originRepositioning = new Vector2d(machineInfo.BedOriginFactorX, machineInfo.BedOriginFactorY);
+            Vector2d bedSize = new Vector2d(machineInfo.BedSizeXMM, machineInfo.BedSizeYMM);
+            PositionShift = originRepositioning*bedSize;
+
             MinExtrudeStepDistance = machineInfo.MinPointSpacingMM;
         }
 

assemblers/RepRapAssembler.cs

@@ -116,7 +116,6 @@ void AppendHeader_StandardRepRap() {
 
             HomeSequenceF(Builder);
 
-            PositionShift = 0.5 * new Vector2d(Settings.Machine.BedSizeXMM, Settings.Machine.BedSizeYMM);
             currentPos = Vector3d.Zero;
 
 			HeaderCustomizerF(HeaderState.BeforePrime, Builder);

settings/AdditiveSettings.cs

@@ -25,6 +25,20 @@ public abstract class MachineInfo
         public double BedSizeYMM = 100;
         public double MaxHeightMM = 100;
 
+        // These factors define the output coordinate system
+
+        // BedOriginFactorX:
+        // 0   : the origin is at the left of the build plate
+        // 0.5 : the origin is at the middle of the build plate
+        // 1   : the origin is at the right of the build plate
+
+        // BedOriginFactorY:
+        // 0   : the origin is at the front of the build plate
+        // 0.5 : the origin is at the middle of the build plate
+        // 1   : the origin is at the back of the build plate
+
+        public double BedOriginFactorX = 0;
+        public double BedOriginFactorY = 0;
 
         public abstract T CloneAs<T>() where T : class;
         protected virtual void CopyFieldsTo(MachineInfo to)
@@ -126,6 +140,8 @@ protected virtual void CopyFieldsTo(FFFMachineInfo to)
             to.BedSizeXMM = this.BedSizeXMM;
             to.BedSizeYMM = this.BedSizeYMM;
             to.MaxHeightMM = this.MaxHeightMM;
+            to.BedOriginFactorX = this.BedOriginFactorX;
+            to.BedOriginFactorY = this.BedOriginFactorY;
         }
     }
 

settings/RepRapSettings.cs

@@ -54,6 +54,9 @@ void configure_unknown()
             Machine.Class = MachineClass.PlasticFFFPrinter;
             Machine.BedSizeXMM = 80;
             Machine.BedSizeYMM = 80;
+            Machine.BedOriginFactorX = 0.5;
+            Machine.BedOriginFactorY = 0.5;
+
             Machine.MaxHeightMM = 55;
             Machine.NozzleDiamMM = 0.4;
             Machine.FilamentDiamMM = 1.75;