je fais joujou avec l'étoile de la mort

main.c

@@ -10,9 +10,10 @@
 /* SCENE LIST 
 shaders/default.fs
 shaders/immeublesparisiens.fs
+shaders/joliesformes.fs
 */
 #define SCENE "shaders/default.fs"
-//#define SCENE "shaders/immeublesparisiens.fs"
+//#define SCENE "shaders/joliesformes.fs"
 #define FULLSCREEN 0
 #define EXPERIMENTAL_FEATURES 0
 /* ## DEBUG MODE ##

shaders/immeublesparisiens.fs

@@ -71,7 +71,7 @@ vec4 Get_Impact(vec3 origin,vec3 dir){//must have length(dir)==1
 		dist=SDF_Global(pos);
 		pos+=dist*dir;
 		if(dist<=.01) return vec4(pos,1.);
-		if(dist>=20.0) return vec4(pos,-1.);
+		if(dist>=200.0) return vec4(pos,-1.);
 	}
 	return vec4(pos,-1.);
 }

shaders/joliesformes.fs

@@ -0,0 +1,175 @@
+#version 330 core
+
+in vec2 FragCoord;
+in float Time;
+in vec3 Ex;
+in vec3 Ey;
+in vec3 Ez;
+in vec3 CamPos;
+in float fovValue;
+in float FacteurLargeur;
+
+out vec4 FragColor;
+//uniform sampler2D generalTexture;
+
+vec3 rotate(vec3 pos, vec3 angles){
+	float ca=cos(angles.x);
+	float sa=sin(angles.x);
+	float cb=cos(angles.y);
+	float sb=sin(angles.y);
+	float cc=cos(angles.z);
+	float sc=sin(angles.z);
+	return vec3(cb*cc*pos.x+(sa*sb*cc-ca*sc)*pos.y+(ca*sb*cc+sa*sc)*pos.z,
+							cb*sc*pos.x+(sa*sb*sc+ca*cc)*pos.y+(ca*sb*sc-sa*cc)*pos.z,
+							-sb*pos.x+sa*cb*pos.y+ca*cb*pos.z);
+}
+
+vec3 infinity(vec3 pos,vec3 box){
+	return mod(pos+.5*box,box)-.5*box;
+}
+
+
+vec3 repeat(vec3 p, vec3 size, vec3 repet)
+{
+    return p-size*clamp(vec3(round(p.x/size.x),round(p.y/size.y),round(p.z/size.z)),-repet,repet);
+}
+
+float SDF_Box_Frame( vec3 p, vec3 b, float e )
+{
+       p = abs(p  )-b;
+  vec3 q = abs(p+e)-e;
+  return min(min(
+      length(max(vec3(p.x,q.y,q.z),0.0))+min(max(p.x,max(q.y,q.z)),0.0),
+      length(max(vec3(q.x,p.y,q.z),0.0))+min(max(q.x,max(p.y,q.z)),0.0)),
+      length(max(vec3(q.x,q.y,p.z),0.0))+min(max(q.x,max(q.y,p.z)),0.0));
+}
+
+float Inflate( float b, float r )
+{
+  return b - r;
+}
+
+float SDF_Sphere(vec3 p,float r){
+	return length(p)-r;
+}
+
+float SDF_Box(vec3 p, vec3 t){
+	vec3 q=abs(p)-t;
+	return length(max(q,0.0))+ min(max(q.x,max(q.y,q.z)),0.0);
+}
+
+float SDF_Torus( vec3 p, vec2 t )
+{
+  vec2 q = vec2(length(p.xz)-t.x,p.y);
+  return length(q)-t.y;
+}
+
+float SDF_DeathStar( in vec3 p2, in float ra, float rb, in float d )
+{
+  // sampling independent computations (only depend on shape)
+  float a = (ra*ra - rb*rb + d*d)/(2.0*d);
+  float b = sqrt(max(ra*ra-a*a,0.0));
+	
+  // sampling dependant computations
+  vec2 p = vec2( p2.x, length(p2.yz) );
+  if( p.x*b-p.y*a > d*max(b-p.y,0.0) )
+    return length(p-vec2(a,b));
+  else
+    return max( (length(p          )-ra),
+               -(length(p-vec2(d,0))-rb));
+}
+
+float SDF_CutHollowSphere( vec3 p, float r, float h, float t )
+{
+  // sampling independent computations (only depend on shape)
+  float w = sqrt(r*r-h*h);
+  
+  // sampling dependant computations
+  vec2 q = vec2( length(p.xz), p.y );
+  return ((h*q.x<w*q.y) ? length(q-vec2(w,h)) : 
+                          abs(length(q)-r) ) - t;
+}
+
+
+float SDF_Global(vec3 p){
+	//return SDF_Box_Frame(rotate(p,vec3(0.,.2*Time,0.)),vec3(.5,.5,.5),.1);
+	//return max(SDF_Sphere(p,.5),-SDF_Box_Frame(rotate(p,vec3(0.,.2*Time,0.)),vec3(1.,1.,1.),.3));//min(SDF_Box_Frame(p,vec3(.5,.5,.5),0.1),SDF_Circle(mod(p+vec3(.5),vec3(1.,1.,1.))-vec3(.5),.15));
+	//return min(SDF_Box_Frame(repeat(p, vec3(4.,2.,10.), vec3(2., 25., 4.)), vec3(1.,1.,1.),.1),SDF_Box(p,vec3(20.,0.1,50.))); //infinity(p, vec(0.3, 0.2, 0.5))
+    float m = SDF_Torus(p, vec2(1.,0.2));
+    m = min(m, SDF_DeathStar(p-vec3(-5.,0,-5.), 3., 2., 4.));
+    return m;
+}
+
+vec4 Get_Impact(vec3 origin,vec3 dir){//must have length(dir)==1 
+	vec3 pos=origin;
+	float dist;
+	for(int i=0;i<260;i++){
+		dist=SDF_Global(pos);
+		pos+=dist*dir;
+		if(dist<=.01) return vec4(pos,1.);
+		if(dist>=200.0) return vec4(pos,-1.);
+	}
+	return vec4(pos,-1.);
+}
+
+vec3 grad(vec3 p){
+	vec2 epsilon = vec2(.01,0.);
+	return normalize(vec3(SDF_Global(p+epsilon.xyy)-SDF_Global(p-epsilon.xyy),
+												SDF_Global(p+epsilon.yxy)-SDF_Global(p-epsilon.yxy),
+												SDF_Global(p+epsilon.yyx)-SDF_Global(p-epsilon.yyx)));
+}
+
+vec3 Get_Color(vec3 origin,vec3 dir){
+	vec4 impact = Get_Impact(origin,dir);
+	
+	//
+	vec3 sunPos=normalize(rotate(vec3(.1,1.,.0),vec3(.2*Time,.6,0)));//vec3(3.*sin(Time*1.5),3.*cos(Time*3.),3.*cos(Time*1.5));
+	//return vec3(clamp(0.,1.,dot(sunPos,normale)));//normale; ---impact.xyz
+
+	float dotdirsun = dot(sunPos, dir);
+	//if(impact.w<0.) return vec3(.3,.1+.7*dotdirsun,0.2+.8*dotdirsun)+.05*clamp(origin.y-10.,-10.,10.); //(.5,.8,.9)
+	if(impact.w<0.) return vec3(.4,.1+.6*sunPos.y,.8*sunPos.y)+dotdirsun;//+.05*clamp(origin.y-10.,-10.,10.); //(.5,.8,.9)
+	vec3 normale=grad(impact.xyz);
+
+	vec3 symetrique= dir-2.0*dot(dir,normale)*normale;
+	//vec4 reflexion = Get_Impact(impact.xyz+0.02*normale,normalize(symetrique));
+	//float g=reflexion.w<0.?1.5:1.;
+	//vec3 sunPos=vec3(0.,10.,.5);//vec3(3.,3.5,.5);//vec3(3.*sin(Time*1.5),3.*cos(Time*3.),3.*cos(Time*1.5));
+	vec4 ombre = Get_Impact(impact.xyz+0.02*normale,sunPos);
+	float f=ombre.w<0.?1.:.5;
+	return vec3(clamp(0.,1.,dot(sunPos,normale)))*f; //*
+}
+
+float Mandel(vec2 co){
+	vec2 coo = co.xy;
+	float limf=100.0;
+	float cf=0.0;
+	int c;
+	for(c=0;c<30;c++){
+		coo=vec2(pow(coo.x,2.0)-pow(coo.y,2.0)+co.x,2.*coo.x*coo.y+co.y);
+		if(length(coo)>=2.0){
+			return cf/limf;
+		}
+		cf+=1.0;
+	}
+	return 0.0;
+}
+
+void main(){
+	vec3 lookingAt = vec3(0.);
+	vec3 posCam    = CamPos;//vec3(-3.*sin(Time*.15),.6*cos(Time*.15),3.*cos(Time*.15));
+	//vec3 posCam    = vec3(-3.*sin(MousePos.x/400)*(1-abs(atan(MousePos.y/500))),2*atan(MousePos.y/300),3.*cos(MousePos.x/400)*(1-abs(atan(MousePos.y/500))));
+	//float pan=-MousePos.x/180.;
+	//float tilt=-MousePos.y/180.;
+	//tilt=max(min(tilt,3.14*.45),-3.14*.45);
+
+	//vec3 ez = vec3(cos(tilt)*sin(pan),sin(tilt),cos(tilt)*cos(pan));//normalize(lookingAt-posCam);////base orthonormée
+	//vec3 ex = normalize(cross(ez,vec3(0.,1.,0.)));
+	//vec3 ey = cross(ex,ez);
+	
+	vec3 dir = normalize(FragCoord.x * normalize(Ex) + FragCoord.y * normalize(Ey) + fovValue * Ez);
+	
+	
+  //float c=Mandel(FragCoord*1.5);
+  FragColor=vec4(Get_Color(posCam,dir),1.);//c,c,c,1.);
+}