X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fpolytest.c;h=5b43eeaadbe5099deb9b96f60e39f2692422204d;hp=fb8d9afca4b408d500e5d9511732fc8715d7f83e;hb=633743214adddf6ec20f8b1bee1782e6966023af;hpb=d1a2007e191d68b104e436d1817eafcc99ae21dd

diff --git a/src/polytest.c b/src/polytest.c
index fb8d9af..5b43eea 100644
--- a/src/polytest.c
+++ b/src/polytest.c
@@ -1,19 +1,34 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "screen.h"
+#include "demo.h"
+#include "3dgfx.h"
+
+struct mesh {
+	int prim;
+	struct g3d_vertex *varr;
+	unsigned int *iarr;
+	int vcount, icount;
+};
 
 static int init(void);
 static void destroy(void);
+static void start(long trans_time);
 static void draw(void);
+static void draw_mesh(struct mesh *mesh);
+static int gen_cube(struct mesh *mesh, float sz);
 
 static struct screen scr = {
 	"polytest",
 	init,
 	destroy,
-	0, 0,
+	start, 0,
 	draw
 };
 
+static struct mesh cube;
+
 struct screen *polytest_screen(void)
 {
 	return &scr;
@@ -21,13 +36,130 @@ struct screen *polytest_screen(void)
 
 static int init(void)
 {
+	gen_cube(&cube, 1.0);
 	return 0;
 }
 
 static void destroy(void)
 {
+	free(cube.varr);
+}
+
+static void start(long trans_time)
+{
+	g3d_matrix_mode(G3D_PROJECTION);
+	g3d_load_identity();
+	g3d_perspective(50.0, 1.3333333, 0.5, 100.0);
+
+	g3d_enable(G3D_CULL_FACE);
 }
 
 static void draw(void)
 {
+	static int prev_mx, prev_my;
+	static float theta, phi = 25;
+
+	int dx = mouse_x - prev_mx;
+	int dy = mouse_y - prev_my;
+	prev_mx = mouse_x;
+	prev_my = mouse_y;
+
+	if(dx || dy) {
+		theta += dx * 2.0;
+		phi += dy * 2.0;
+
+		if(phi < -90) phi = -90;
+		if(phi > 90) phi = 90;
+	}
+
+	/*float angle = (float)time_msec / 50.0;*/
+
+	memset(fb_pixels, 0, fb_width * fb_height * 2);
+
+	g3d_matrix_mode(G3D_MODELVIEW);
+	g3d_load_identity();
+	g3d_translate(0, 0, -5);
+	g3d_rotate(phi, 1, 0, 0);
+	g3d_rotate(theta, 0, 1, 0);
+
+	draw_mesh(&cube);
+}
+
+static void draw_mesh(struct mesh *mesh)
+{
+	if(mesh->iarr) {
+		/*g3d_draw_indexed(mesh->prim, mesh->iarr, mesh->icount, mesh->varr);*/
+	} else {
+		g3d_draw(mesh->prim, mesh->varr, mesh->vcount);
+	}
+}
+
+#define NORMAL(vp, x, y, z) do { vp->nx = x; vp->ny = y; vp->nz = z; } while(0)
+#define COLOR(vp, cr, cg, cb) do { vp->r = cr; vp->g = cg; vp->b = cb; } while(0)
+#define TEXCOORD(vp, tu, tv) do { vp->u = tu; vp->v = tv; } while(0)
+#define VERTEX(vp, vx, vy, vz) \
+	do { \
+		vp->x = vx; vp->y = vy; vp->z = vz; vp->w = 1.0f; \
+		++vp; \
+	} while(0)
+
+static int gen_cube(struct mesh *mesh, float sz)
+{
+	struct g3d_vertex *vptr;
+	float hsz = sz / 2.0;
+
+	mesh->prim = G3D_QUADS;
+	mesh->iarr = 0;
+	mesh->icount = 0;
+
+	mesh->vcount = 24;
+	if(!(mesh->varr = malloc(mesh->vcount * sizeof *mesh->varr))) {
+		return -1;
+	}
+	vptr = mesh->varr;
+
+	/* -Z */
+	NORMAL(vptr, 0, 0, -1);
+	COLOR(vptr, 255, 0, 255);
+	VERTEX(vptr, hsz, -hsz, -hsz);
+	VERTEX(vptr, -hsz, -hsz, -hsz);
+	VERTEX(vptr, -hsz, hsz, -hsz);
+	VERTEX(vptr, hsz, hsz, -hsz);
+	/* -Y */
+	NORMAL(vptr, 0, -1, 0);
+	COLOR(vptr, 0, 255, 255);
+	VERTEX(vptr, -hsz, -hsz, -hsz);
+	VERTEX(vptr, hsz, -hsz, -hsz);
+	VERTEX(vptr, hsz, -hsz, hsz);
+	VERTEX(vptr, -hsz, -hsz, hsz);
+	/* -X */
+	NORMAL(vptr, -1, 0, 0);
+	COLOR(vptr, 255, 255, 0);
+	VERTEX(vptr, -hsz, -hsz, -hsz);
+	VERTEX(vptr, -hsz, -hsz, hsz);
+	VERTEX(vptr, -hsz, hsz, hsz);
+	VERTEX(vptr, -hsz, hsz, -hsz);
+	/* +X */
+	NORMAL(vptr, 1, 0, 0);
+	COLOR(vptr, 255, 0, 0);
+	VERTEX(vptr, hsz, -hsz, hsz);
+	VERTEX(vptr, hsz, -hsz, -hsz);
+	VERTEX(vptr, hsz, hsz, -hsz);
+	VERTEX(vptr, hsz, hsz, hsz);
+	/* +Y */
+	NORMAL(vptr, 0, 1, 0);
+	COLOR(vptr, 0, 255, 0);
+	VERTEX(vptr, -hsz, hsz, hsz);
+	VERTEX(vptr, hsz, hsz, hsz);
+	VERTEX(vptr, hsz, hsz, -hsz);
+	VERTEX(vptr, -hsz, hsz, -hsz);
+	/* +Z */
+	NORMAL(vptr, 0, 0, 1);
+	COLOR(vptr, 0, 0, 255);
+	VERTEX(vptr, -hsz, -hsz, hsz);
+	VERTEX(vptr, hsz, -hsz, hsz);
+	VERTEX(vptr, hsz, hsz, hsz);
+	VERTEX(vptr, -hsz, hsz, hsz);
+
+	return 0;
 }