Refined toolchain instructions, organized examples, added automatic retry for CdRead(), added FIOCSCAN ioctl in psxsio TTY driver, added tty and console examples.

1 files changed, 40 insertions, 0 deletions

diff --git a/examples/graphics/fpscam/lookat.c b/examples/graphics/fpscam/lookat.c
new file mode 100644
index 0000000..d7c9ce4
--- /dev/null
+++ b/examples/graphics/fpscam/lookat.c
@@ -0,0 +1,40 @@
+// LookAt matrix code (may be implemented into libpsxgte soon)
+
+#include "lookat.h"
+
+void crossProduct(SVECTOR *v0, SVECTOR *v1, VECTOR *out) {
+
+	out->vx = ((v0->vy*v1->vz)-(v0->vz*v1->vy))>>12;
+	out->vy = ((v0->vz*v1->vx)-(v0->vx*v1->vz))>>12;
+	out->vz = ((v0->vx*v1->vy)-(v0->vy*v1->vx))>>12;
+
+}
+
+void LookAt(VECTOR *eye, VECTOR *at, SVECTOR *up, MATRIX *mtx) {
+
+	VECTOR taxis;
+	SVECTOR zaxis;
+	SVECTOR xaxis;
+	SVECTOR yaxis;
+	VECTOR pos;
+	VECTOR vec;
+
+	setVector(&taxis, at->vx-eye->vx, at->vy-eye->vy, at->vz-eye->vz);
+	VectorNormalS(&taxis, &zaxis);
+    crossProduct(&zaxis, up, &taxis);
+	VectorNormalS(&taxis, &xaxis);
+	crossProduct(&zaxis, &xaxis, &taxis);
+	VectorNormalS(&taxis, &yaxis);
+
+	mtx->m[0][0] = xaxis.vx;	mtx->m[1][0] = yaxis.vx;	mtx->m[2][0] = zaxis.vx;
+	mtx->m[0][1] = xaxis.vy;	mtx->m[1][1] = yaxis.vy;	mtx->m[2][1] = zaxis.vy;
+	mtx->m[0][2] = xaxis.vz;	mtx->m[1][2] = yaxis.vz;	mtx->m[2][2] = zaxis.vz;
+
+	pos.vx = -eye->vx;;
+	pos.vy = -eye->vy;;
+	pos.vz = -eye->vz;;
+
+	ApplyMatrixLV(mtx, &pos, &vec);
+	TransMatrix(mtx, &vec);
+	
+}
\ No newline at end of file