From e0a2f217634c7e0133378a23c94e60c7f74c77fb Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Thu, 1 Aug 2024 21:28:45 +1000
Subject: scale matrix

---
 3de.c   |  3 ++-
 maths.c | 14 ++++++++++++++
 maths.h |  2 ++
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/3de.c b/3de.c
index bf114ec..1c10e03 100644
--- a/3de.c
+++ b/3de.c
@@ -47,11 +47,12 @@ void draw_gun(Renderer* r) {
 	const Texture* tex = get_texture(asset_id_gun_texture);
 	int p[] = { f1 * 7, 0, f1 * 5, f1 };
 	mtx_push_trans(p);
+	mtx_push_scale(0xff);
 	/*mtx_push_rot_x(a);
 	mtx_push_rot_y(a);
 	mtx_push_rot_z(a);*/
 	ren_mesh(r, m, tex);
-	mtx_popn(1);
+	mtx_popn(2);
 	a++;
 }
 
diff --git a/maths.c b/maths.c
index a0c9ed5..5ade946 100644
--- a/maths.c
+++ b/maths.c
@@ -180,6 +180,12 @@ void mtx_push_rot_z(int a) {
 	mtx_push(m);
 }
 
+void mtx_push_scale(int s) {
+	int m[0x10];
+	mtx_scale(m, s);
+	mtx_push(m);
+}
+
 int* mtx_pop(void) {
 	assert(mtx_stack_top > 0);
 	return mtx_stack[--mtx_stack_top];
@@ -234,6 +240,14 @@ int* mtx_rot_z(int* d, int a) {
 	return d;
 }
 
+int* mtx_scale(int* d, int s) {
+	mtx_iden(d);
+	d[0]  = s;
+	d[5]  = s;
+	d[10] = s;
+	return d;
+}
+
 int* mtx_apply(const int* m, int* v) {
 	int s[4];
 	vec_cpy(s, v, 4);
diff --git a/maths.h b/maths.h
index 725e401..a31c3da 100644
--- a/maths.h
+++ b/maths.h
@@ -31,6 +31,7 @@ void mtx_push_trans(int* v);
 void mtx_push_rot_x(int a);
 void mtx_push_rot_y(int a);
 void mtx_push_rot_z(int a);
+void mtx_push_scale(int a);
 int* mtx_pop(void);
 int* mtx_popn(int n);
 int* mtx_peek(void);
@@ -38,6 +39,7 @@ int* mtx_trans(int* d, int* v);
 int* mtx_rot_x(int* d, int a);
 int* mtx_rot_y(int* d, int a);
 int* mtx_rot_z(int* d, int a);
+int* mtx_scale(int* d, int s);
 int* mtx_apply(const int* m, int* v);
 int* vec_cpy(int* d, const int* s, int c);
 int* vec_ref(int* d, const int* i, const int* n, int c);
-- 
cgit v1.2.3-54-g00ecf