X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;ds=inline;f=tools%2Fgltest%2Fsrc%2Fmain.c;fp=tools%2Fgltest%2Fsrc%2Fmain.c;h=82042ca95f4f4f3711d5d401a3202638d261b6f3;hb=1fc50fb52faab54b3d5e160d3765d866c6cf173a;hp=0000000000000000000000000000000000000000;hpb=45f6f46fe758d15aafccdb69ae837fc7d84ee466;p=dosdemo

diff --git a/tools/gltest/src/main.c b/tools/gltest/src/main.c
new file mode 100644
index 0000000..82042ca
--- /dev/null
+++ b/tools/gltest/src/main.c
@@ -0,0 +1,159 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+#include "bsptree.h"
+#include "mesh.h"
+
+int init(void);
+void cleanup(void);
+void display(void);
+void reshape(int x, int y);
+void keydown(unsigned char key, int x, int y);
+void mouse(int bn, int st, int x, int y);
+void motion(int x, int y);
+
+static float cam_theta, cam_phi, cam_dist = 5;
+static int prev_x, prev_y;
+static int bnstate[8];
+
+/* ----------------------------------- */
+static struct g3d_mesh torus;
+static struct bsptree torus_bsp;
+/* ----------------------------------- */
+
+int main(int argc, char **argv)
+{
+	glutInit(&argc, argv);
+	glutInitWindowSize(800, 600);
+	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
+	glutCreateWindow("OpenGL test");
+
+	glutDisplayFunc(display);
+	glutReshapeFunc(reshape);
+	glutKeyboardFunc(keydown);
+	glutMouseFunc(mouse);
+	glutMotionFunc(motion);
+
+	if(init() == -1) {
+		return 1;
+	}
+	atexit(cleanup);
+
+	glutMainLoop();
+	return 0;
+}
+
+int init(void)
+{
+	glEnable(GL_DEPTH_TEST);
+	glEnable(GL_CULL_FACE);
+	glEnable(GL_LIGHTING);
+	glEnable(GL_LIGHT0);
+
+	gen_torus_mesh(&torus, 1.0, 0.25, 24, 12);
+
+	init_bsp(&torus_bsp);
+	if(bsp_add_mesh(&torus_bsp, &torus) == -1) {
+		fprintf(stderr, "failed to construct torus BSP tree\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+void cleanup(void)
+{
+	free(torus.varr);
+	free(torus.iarr);
+	destroy_bsp(&torus_bsp);
+}
+
+void display(void)
+{
+	float vdir[3];
+	float mat[16];
+
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	glTranslatef(0, 0, -cam_dist);
+	glRotatef(cam_phi, 1, 0, 0);
+	glRotatef(cam_theta, 0, 1, 0);
+
+	glGetFloatv(GL_MODELVIEW_MATRIX, mat);
+	vdir[0] = -mat[2];
+	vdir[1] = -mat[6];
+	vdir[2] = -mat[10];
+
+	//g3d_draw_indexed(torus.prim, torus.varr, torus.vcount, torus.iarr, torus.icount);
+	draw_bsp(&torus_bsp, vdir[0], vdir[1], vdir[2]);
+
+	glutSwapBuffers();
+}
+
+void reshape(int x, int y)
+{
+	glViewport(0, 0, x, y);
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective(50, (float)x / (float)y, 0.5, 500.0);
+}
+
+void keydown(unsigned char key, int x, int y)
+{
+	switch(key) {
+	case 27:
+		exit(0);
+	}
+}
+
+void mouse(int bn, int st, int x, int y)
+{
+	prev_x = x;
+	prev_y = y;
+	bnstate[bn - GLUT_LEFT] = st == GLUT_DOWN ? 1 : 0;
+}
+
+void motion(int x, int y)
+{
+	int dx = x - prev_x;
+	int dy = y - prev_y;
+	prev_x = x;
+	prev_y = y;
+
+	if(!dx && !dy) return;
+
+	if(bnstate[0]) {
+		cam_theta += dx * 0.5;
+		cam_phi += dy * 0.5;
+
+		if(cam_phi < -90) cam_phi = -90;
+		if(cam_phi > 90) cam_phi = 90;
+		glutPostRedisplay();
+	}
+	if(bnstate[2]) {
+		cam_dist += dy * 0.1;
+
+		if(cam_dist < 0.0f) cam_dist = 0.0f;
+		glutPostRedisplay();
+	}
+}
+
+/* dummy functions to allow linking with all the demo code */
+void swap_buffers(void *buf)
+{
+}
+
+unsigned int get_msec(void)
+{
+	return glutGet(GLUT_ELAPSED_TIME);
+}
+
+void wait_vsync(void)
+{
+}
+
+void demo_quit(void)
+{
+}