add other parts of circle. Now 6/8 of the circle renders. (A bit buggy looking)

wip-hugo/routines/circle/circle.inc

@@ -6,12 +6,17 @@
         t1    = $E0
         t2    = $E1
         X_rel = radius
-        Y_rel = $E3
+        Y_rel = $E2
-        temp = $E4
+        temp = $E3
-        temp_ = $E7
+        temp_ = $E4
+        X_swap = $E5
+        byte_to_paint_swap = $EF
         ; E8 - EA is used by pixel.inc
-        btp_mem_pos_center = $E5 ; 16bit value (uses E6)
+        btp_mem_pos_center = $E6 ; 16bit value (uses E7)
         btp_mem_pos_center_two = btp_mem_pos_center
         btp_mem_pos_inv_y =$EB   ; 16bit value (uses EC)
-        Y_inv_x = $EC
+        btp_mem_pos_inv = $ED    ; 16bit value (uses EE)
-        btp_mem_pos_inv = $EE    ; 16bit value (uses EF)
+
+        btp_mem_pos_swop = $D0   ; 16bit value (uses D1)
+        temp__ = $D2
+        temp___ = $D3

wip-hugo/routines/circle/circle.s

@@ -31,7 +31,24 @@ draw_center_px_in_circle:
         ;; fix offset of 8 bytes, idk why this is needed
         Sub_16 btp_mem_pos_center, btp_mem_pos_center + 1, #$40, #$01 ;-320
 
+draw_lower_px_in_circle:
+        LDA Y_pos
+        STA temp
+        CLC
+        ADC radius
+        STA Y_pos
 
+        JSR pixel_draw
+
+        LDA btp_mem_pos
+        STA btp_mem_pos_swop
+        LDA btp_mem_pos + 1
+        STA btp_mem_pos_swop + 1
+        ;; fix offset of 8 bytes, idk why this is needed
+        Sub_16 btp_mem_pos_swop, btp_mem_pos_swop + 1, #$40, #$01 ;-320
+
+        LDA temp
+        STA Y_pos
 draw_right_px_in_circle:
         ;; C = 0, because Mult_16
         LDA X_pos
@@ -51,7 +68,8 @@ draw_right_px_in_circle:
         Sub_16 btp_mem_pos_inv_y, btp_mem_pos_inv_y + 1, #$40, #$01 ;-320
 
 
-        SEC ;; See draw_pixel_inv
+
+SEC ;; See draw_pixel_inv
 while_x_bigger_then_y:
         ;;Draw pixels
         JSR circle_help
@@ -66,7 +84,13 @@ move_8px_down:
         ; So we subtract  #$0140
         ; C = 1 because branching!
         Sub_16 btp_mem_pos, btp_mem_pos + 1, #$40, #$01, ! ;-320
+
+        ;; Y is inverted
         Add_16 btp_mem_pos_inv_y, btp_mem_pos_inv_y + 1, #$40, #$01 ;+320
+        ;; X and Y has swopped
+        Sub_16 btp_mem_pos_swop, btp_mem_pos_swop + 1, #$08, #$00
+
+
 increment_y_pos_end:
 
         ;;t1 += y
@@ -92,7 +116,14 @@ move_8px_left:
         ;; -8.
         ;; C = 1 because branching
         Sub_16 btp_mem_pos, btp_mem_pos + 1, #$08, #$00, !
+
+        ;; Y is inverted
         Sub_16 btp_mem_pos_inv_y, btp_mem_pos_inv_y + 1, #$08, #$00, !
+
+        ;; X and Y has swoped
+        Sub_16 btp_mem_pos_swop, btp_mem_pos_swop + 1, #$40, #$01 ;-320
+
+
         ;; Restores byte to paint
         LDA #%00000001
         STA byte_to_paint

wip-hugo/routines/circle/circle_help.s

@@ -1,4 +1,4 @@
-.proc circle_help ;; This is because jmp cant jump that long!
+.proc circle_help ; This is because jmp cant jump that long!
 .include "circle.inc"
 
 
@@ -11,7 +11,7 @@
 ;;   qca         |         qda
 ;;               |
 ;;      qcb      |      qdb
-;;               |
+;;              |
 ;;               v Y
 ;; The q stands for quarter, whe have 4 quarter, and each quarter is split into 2
 
@@ -21,6 +21,57 @@ draw_qaa:
         ORA (btp_mem_pos), Y
         STA (btp_mem_pos), Y
 
+;; something is wrong | well isue for another time
+draw_qcb:; xy swaped
+        STY temp
+        STX temp_
+        LDA byte_to_paint
+        STA temp__
+
+        LDY #$00
+        jmp goto_loop
+loop:
+        INY
+goto_loop:
+        asl byte_to_paint; lsr asl
+        BCC loop
+        STY temp___
+
+
+        LDX temp
+       	LDA binary_factor, X; (see END.s)
+
+
+        LDY temp___
+        ORA (btp_mem_pos_swop), Y
+        STA (btp_mem_pos_swop), Y;
+
+
+draw_qab: ;xy swoped + mirroring
+
+        LDA btp_mem_pos_center_two
+        SBC btp_mem_pos_swop
+        STA btp_mem_pos_inv
+        LDA btp_mem_pos_center_two + 1
+        SBC btp_mem_pos_swop + 1
+        STA btp_mem_pos_inv + 1
+
+        LDY temp___
+        SEC
+        LDA #$07
+        SBC temp___
+        TAY
+
+        LDX byte_to_paint
+	LDA inverse_factor_value, X;; (see END.s)	TAX ;; A is saved to x because qba use this as well
+        ORA (btp_mem_pos_inv), Y
+        STA (btp_mem_pos_inv), Y
+
+
+        LDY temp
+        LDX temp_
+        LDA temp__
+        STA byte_to_paint
 draw_qda:
         ;; inverted Y, this is shared with qca
         STY temp
@@ -33,7 +84,6 @@ draw_qda:
         LDA byte_to_paint
         ORA (btp_mem_pos_inv_y), Y
         STA (btp_mem_pos_inv_y), Y
-        ;LDY temp
 
 draw_qca: ;;mirror technique
         SEC
@@ -68,9 +118,6 @@ draw_qba: ;;mirror_technique
         SBC btp_mem_pos_inv_y + 1
         STA btp_mem_pos_inv + 1
 
-        ;STX temp_
-        ;LDX byte_to_paint
-        ;LDA inverse_factor_value, X;; (see END.s)
         TXA
         LDX temp_
 
@@ -78,7 +125,5 @@ draw_qba: ;;mirror_technique
         ORA (btp_mem_pos_inv), Y
         STA (btp_mem_pos_inv), Y
 
-
-
         RTS
 .endproc