src 14 : cursor

DEVELOPMENT.md

@@ -90,13 +90,13 @@ make -f Makefile.dev release-arch
   - [x] src 10 : isometric grid
   - [x] src 12 : pattern in my kitchen
   - [x] src 13 : another pattern in my kitchen
-  - [ ] src 14 : cursor with select
+  - [x] src 14 : cursor with select
-  - [ ] src 15 : ?
+  - [ ] src 15 : random source
   - [x] fx 11 : spill
   - [x] fx 12 : game of life
   - [x] fx 13 : sobel
   - [ ] fx 14 : colorize range (pretty color ranges)
-  - [ ] fx 15 : ?
+  - [ ] fx 15 : random fx
   - [x] frag 10 : move debug screen here
   - [ ] debug : add src/fx/A/B indicators
 - [ ] Other

README.md

@@ -154,8 +154,8 @@ options:
 | **3** | **A** | Video In 2 + Thru | _Hue_             | _Saturation_    | _Light_            | Spill            | _Bottom limit_  | _Top Limit_   | _Rotation_     |
 |       | **B** | Scales            | _Zoom_            | _Shape_         | _Ripples_          | Game Of Life     | _Pixel Size_    | _Ruleset/Threshold_ | _Feedback_               |
 |       | **C** | Credenza          | _Zoom_            | _Shape_         | _Ripples_          | Sobel Filter    | _Horz. filter_   | _Vert. filter_ | _Filter Size_ |
-|       | **D** | (same as 7)       |                   |                 |                    | (same as 0)     |                  |               |                |
+|       | **D** | Cursor            | _Size_            | _Pos X_         | _Pos Y_            | (same as 0)     |                  |               |                |
-|       | **E** | (same as 8)       |                   |                 |                    | (same as 1)     |                  |               |                |
+|       | **E** | (Random source)   | ---               | ---             | ---                | (Random effect)  | ---              | ---          |  ---          |
 
 TODO update
 

default/inc_src.glsl

@@ -421,10 +421,9 @@ subroutine(src_stage_sub) vec4 src_13(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3
     return vec4(f);
 }
 
-// TODO SRC 14
+// SRC 14 : Cursor
 subroutine(src_stage_sub) vec4 src_14(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
 {
-    return src_8(vUV, seed, b1, f1, b2, f2, b3, f3);
     // start
 
 	vec2 uv0 = vUV.st;
@@ -433,9 +432,29 @@ subroutine(src_stage_sub) vec4 src_14(vec2 vUV, int seed, vec3 b1, vec2 f1, vec3
 
     // controls
 
+    float size = magic(f1, b1, seed + 10) * 2 + 0.1;
+    float dx = (magic(f2, b2, seed + 20) * (1 - size * 0.06) - 0.5) * ratio;
+    float dy = magic(f3, b3, seed + 30) * (1 - size * 0.17) - 0.5;
+
     // logic
 
-    return texture(iTex0, vUV);
+    vec2 uv2 = uv1;
+
+    uv2 -= vec2(dx, -dy);
+
+    uv2 /= size;
+
+    uv2 *= -rot(-PI / 2);
+
+    float f = istep(0, (uv2.x * 2 + uv2.y) * (uv2.x * 2 - uv2.y)) * istep(0, uv2.y);
+
+    uv2.y += 0.1;
+
+    f  -= istep(0, (uv2.x + uv2.y * 3) * (uv2.x - uv2.y * 3)) * istep(0, uv2.y);
+
+    f += rect(uv2, vec2(0, -0.04), vec2(0.01, 0.04));
+    
+    return vec4(f);
 }
 
 // TODO SRC 15