shithub: libgraphics

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remove quaternion sandwich utils (now part of libgeometry.)

--- a/graphics.h

+++ b/graphics.h

@@ -150,6 +150,8 @@

 	/* spotlights */

 	double θu;	/* umbra angle. anything beyond is unlit */

 	double θp;	/* penumbra angle. anything within is fully lit */

+

+	LightSource *prev, *next;

 };

 struct Material

@@ -199,6 +201,8 @@

 	char *name;

 	Entity ents;

 	ulong nents;

+	LightSource lights;

+	ulong nlights;

 	Cubemap *skybox;

 	void (*addent)(Scene*, Entity*);

@@ -446,8 +450,6 @@

 Point3 minpt3(Point3, Point3);

 Point3 maxpt3(Point3, Point3);

 int eqpt3(Point3, Point3);

-Quaternion qsandwich(Quaternion, Quaternion);

-Point3 qsandwichpt3(Quaternion, Point3);

 Memimage *rgba(ulong);

 Memimage *dupmemimage(Memimage*);

--- a/render.c

+++ b/render.c

@@ -179,7 +179,7 @@

 	double dplen, perc;

 	float z, pcz;

 	uint ropts;

-	int steep = 0, Δe, e, Δy;

+	int steep, Δe, e, Δy;

 	params = task->params;

 	prim = &task->p;

@@ -233,6 +233,7 @@

 		if(rectclipline(task->wr, &p0, &p1, &prim->v[0], &prim->v[1]) < 0)

 			break;

+		steep = 0;

 		/* transpose the points */

 		if(abs(p0.x-p1.x) < abs(p0.y-p1.y)){

 			steep = 1;

--- a/util.c

+++ b/util.c

@@ -91,21 +91,6 @@

 	return vec3len(subpt3(a, b)) < ε2;

 }

-Quaternion

-qsandwich(Quaternion q, Quaternion p)

-{

-	return mulq(mulq(q, p), invq(q));

-}

-

-Point3

-qsandwichpt3(Quaternion q, Point3 p)

-{

-	Quaternion r;

-

-	r = qsandwich(q, Quatvec(0, p));

-	return Pt3(r.i, r.j, r.k, p.w);

-}

-

 void

 memsetf(void *dp, float v, usize len)

 {