diff --git a/main.c b/main.c
index 9adb634..ad907ad 100644
--- a/main.c
+++ b/main.c
@@ -15,6 +15,7 @@ typedef struct {
     float d2;
     float lambda;
     float angleM1;
+    float angleM1_Y;
     Vector2 center;
     bool gaz;
     float nGaz;
@@ -49,65 +50,6 @@ bool GuiButtonRepeat(Rectangle bounds, const char* text, bool shouldRepeat) {
     return clicked || held;
 }
 
-/*
-void DrawInterferenceViewCPU(Michelson *mic, Rectangle rec) {
-    DrawRectangleRec((Rectangle){rec.x - 4, rec.y - 30, rec.width + 8, rec.height + 34}, COLOR_PANEL);
-    DrawText("ECRAN", rec.x, rec.y - 26, 20, COLOR_TEXT_DIM);
-
-    DrawRectangleRec(rec, BLACK);
-    DrawRectangleLinesEx(rec, 1, Fade(COLOR_ACCENT, 0.3f));
-    
-    Color baseColor = WavelengthToColor(mic->lambda);
-   
-    float extraPath = 0.0f;
-    if (mic->gaz)
-        extraPath = 2.0f * 100.0f * (mic->nGaz - 1.0f);
-
-    float d2_effective = mic->d2 + (extraPath / 2.0f);
-
-    // Diff de marche du à l'axe (2 * e) + micro -> nano
-    float deltaLnm = 2.0f * (mic->d1 - d2_effective) * 1000.0f; 
-    
-    int cx = rec.x + rec.width / 2;
-    int cy = rec.y + rec.height / 2;
-
-    float K = PI / mic->lambda;
-   
-    // Dessin pixel par pixel lent... => faire avec gpu 
-    for (int y = rec.y; y < rec.y + rec.height; y++) {
-        for (int x = rec.x; x < rec.x + rec.width; x++) {
-            float relX = (float)(x - cx);
-            float relY = (float)(y - cy);
-            float radiusSq = relX * relX + relY * relY;
-
-            //if (radiusSq > (rec.width / 2.0f - 5) * (rec.width / 2.0f - 5)) continue;
-
-            // Diff de marche lamme d'air 2 * e cos(i) mais petits angles => cos(i) ~ 1 - i^2/2 mais i ~ r/f et r^2 = x^2 + y^2
-            float ringFactor = radiusSq * 0.065f;
-            // Diff de marche dut au coin d'air
-            float wDelta = relX * mic->angleM1 * 200.0f; 
-
-            float currDelta = deltaLnm - ringFactor + wDelta;
-
-            // Formule de Fresnel : I = I_0 * cos^2(phi)
-            float phase = currDelta * K;
-            float intensity = cosf(phase);
-            intensity = intensity * intensity;
-
-            Color pixColor = {(unsigned char)(baseColor.r * intensity), (unsigned char)(baseColor.g * intensity), (unsigned char)(baseColor.b * intensity), 255 };
-            
-            DrawPixel(x, y, pixColor);
-        }
-    }
-
-    DrawRectangleLinesEx(rec, 2, COLOR_PANEL);
-   
-    // croix centre
-    DrawLine(cx - 10, cy, cx + 10, cy, Fade(WHITE, 0.5f));
-    DrawLine(cx, cy - 10, cx, cy + 10, Fade(WHITE, 0.5f));
-}
-*/
-
 void DrawInterferenceViewGPU(Michelson *mic, Rectangle rec, Shader shader, bool *isFullscreen) {
     
     DrawRectangleRec((Rectangle){rec.x - 4, rec.y - 30, rec.width + 8, rec.height + 34}, COLOR_PANEL);
@@ -141,6 +83,7 @@ void DrawInterferenceViewGPU(Michelson *mic, Rectangle rec, Shader shader, bool
     SetShaderValue(shader, GetShaderLocation(shader, "d2"), &d2_effective, SHADER_UNIFORM_FLOAT);
     SetShaderValue(shader, GetShaderLocation(shader, "lambda"), &mic->lambda, SHADER_UNIFORM_FLOAT);
     SetShaderValue(shader, GetShaderLocation(shader, "angleM1"), &mic->angleM1, SHADER_UNIFORM_FLOAT);
+    SetShaderValue(shader, GetShaderLocation(shader, "angleM1_Y"), &mic->angleM1_Y, SHADER_UNIFORM_FLOAT);
     SetShaderValue(shader, GetShaderLocation(shader, "zoom"), &zoom, SHADER_UNIFORM_FLOAT);
 
     // GPU
@@ -292,7 +235,7 @@ void DrawControlPanel(Michelson *mic) {
     if (GuiButton((Rectangle){startX + contentWidth - 60, startY + 30, 60, 25}, "Egal")) mic->d1 = mic->d2;
 
 
-    // Angle M1
+    // Angle M1 X
     startY += 90;
     DrawText(TextFormat("Inclinaison M1: %.3f deg", mic->angleM1), startX, startY, 20, ORANGE);
     float stepAngle = speedMode ? 0.05f : 0.001f;
@@ -301,6 +244,14 @@ void DrawControlPanel(Michelson *mic) {
     if (GuiButtonRepeat((Rectangle){startX + btnSize + sliderWidth - 65, startY + 30, btnSize, 25}, "+", shouldRepeat)) mic->angleM1 += stepAngle;
     if (GuiButton((Rectangle){startX + contentWidth - 60, startY + 30, 60, 25}, "Zero")) mic->angleM1 = 0.0f;
 
+    // Angles M1 Y 
+    startY += 90;
+    DrawText(TextFormat("Inclinaison Y: %.3f deg", mic->angleM1_Y), startX, startY, 20, ORANGE);
+    if (GuiButtonRepeat((Rectangle){startX, startY + 30, btnSize, 25}, "-", shouldRepeat)) mic->angleM1_Y -= stepAngle;
+    GuiSlider((Rectangle){startX + btnSize + 5, startY + 30, sliderWidth - 75, 25}, 0, 0, &mic->angleM1_Y, -1.0f, 1.0f);
+    if (GuiButtonRepeat((Rectangle){startX + btnSize + sliderWidth - 65, startY + 30, btnSize, 25}, "+", shouldRepeat)) mic->angleM1_Y += stepAngle;
+    if (GuiButton((Rectangle){startX + contentWidth - 60, startY + 30, 60, 25}, "Zero")) mic->angleM1_Y = 0.0f;
+
     // Status 
     startY += 70;
     bool isLameAir = (fabs(mic->angleM1) < 0.001f);
@@ -359,6 +310,9 @@ int main () {
     mic.d2 = 250.0f;
     mic.lambda = 550.0f;
     mic.angleM1 = 0.0f;
+    mic.angleM1_Y = 0.0f;
+    mic.nGaz = 1.0f;
+    mic.gaz = false;
 
     bool isFullscreen = false;
 
diff --git a/michelson b/michelson
index 1d80071..e5eec2b 100755
Binary files a/michelson and b/michelson differ
diff --git a/michelson.fs b/michelson.fs
index e10b4e6..a514568 100644
--- a/michelson.fs
+++ b/michelson.fs
@@ -13,6 +13,7 @@ uniform float d1;
 uniform float d2;
 uniform float lambda;
 uniform float angleM1;
+uniform float angleM1_Y;
 uniform float zoom;
 
 const float PI = 3.14159265359;
@@ -53,7 +54,7 @@ void main() {
     float ringFactor = radiusSq * 0.065;
 
     // Diff de marche du au coin d'air
-    float wDelta = relX * angleM1 * 200.0;
+    float wDelta = (relX * angleM1 + relY * angleM1_Y) * 200.0f;
 
     float currDelta = deltaLnm - ringFactor + wDelta;