shithub: tinyrend

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added a knob to scale the model.

--- a/main.c

+++ b/main.c

@@ -106,6 +106,7 @@

 Point3 up = {0,1,0,0};

 Matrix3 view, proj, rota;

 double θ, ω;

+double scale;

 void resized(void);

 uvlong nanosec(void);

@@ -505,10 +506,16 @@

 		0, 1, 0, 0,

 		sin(θ+fmod(ω*sp->su->uni_time/1e9, 2*PI)), 0, cos(θ+fmod(ω*sp->su->uni_time/1e9, 2*PI)), 0,

 		0, 0, 0, 1,

+	}, S = {

+		scale, 0, 0, 0,

+		0, scale, 0, 0,

+		0, 0, scale, 0,

+		0, 0, 0, 1,

 	}, M, V;

 	identity3(M);

 	identity3(V);

+	mulm3(yrot, S);

 	mulm3(M, rota);

 	mulm3(M, yrot);

 	mulm3(V, view);

@@ -1027,7 +1034,7 @@

 void

 usage(void)

 {

-	fprint(2, "usage: %s [-n nprocs] [-m objfile] [-t texfile] [-a yrotangle] [-z camzpos] [-s shader]\n", argv0);

+	fprint(2, "usage: %s [-n nprocs] [-m objfile] [-t texfile] [-a yrotangle] [-z camzpos] [-s shader] [-w width] [-h height] [-S scale]\n", argv0);

 	exits("usage");

 }

@@ -1049,6 +1056,7 @@

 	fbw = 200;

 	fbh = 200;

 	ω = 20*DEG;

+	scale = 1;

 	ARGBEGIN{

 	case 'n':

 		nprocs = strtoul(EARGF(usage()), nil, 10);

@@ -1071,11 +1079,14 @@

 	case 's':

 		sname = EARGF(usage());

 		break;

-	case 'W':

+	case 'w':

 		fbw = strtoul(EARGF(usage()), nil, 10);

 		break;

-	case 'H':

+	case 'h':

 		fbh = strtoul(EARGF(usage()), nil, 10);

+		break;

+	case 'S':

+		scale = strtod(EARGF(usage()), nil);

 		break;

 	default: usage();

 	}ARGEND;