From a95f1b5a4b0f575701b575924b4ecc6e9a501a60 Mon Sep 17 00:00:00 2001
From: peony <peony@email.com>
Date: Sun, 27 Oct 2024 16:54:59 +0100
Subject: [PATCH] Cube work

---
 sysdata/libraries/render/src/lib.hb           |  2 +-
 sysdata/libraries/render/src/software.hb      |  2 +-
 .../render_example/src/examples/cube.hb       | 61 ++++++++++++++++++-
 sysdata/programs/render_example/src/main.hb   |  2 +-
 4 files changed, 62 insertions(+), 5 deletions(-)

diff --git a/sysdata/libraries/render/src/lib.hb b/sysdata/libraries/render/src/lib.hb
index aad9e1e..0e3cd69 100644
--- a/sysdata/libraries/render/src/lib.hb
+++ b/sysdata/libraries/render/src/lib.hb
@@ -44,7 +44,7 @@ put_line := mode.put_line
 clear := mode.clear
 put_surface := mode.put_surface
 put_scaled := mode.put_scaled
-put_tri_wireframe := mode.put_tri_wireframe
+put_tri := mode.put_tri
 put_filled_tri := mode.put_filled_tri
 // thanks peony for these three!
 put_trirect := mode.put_trirect
diff --git a/sysdata/libraries/render/src/software.hb b/sysdata/libraries/render/src/software.hb
index d205fbb..6c6b64c 100644
--- a/sysdata/libraries/render/src/software.hb
+++ b/sysdata/libraries/render/src/software.hb
@@ -358,7 +358,7 @@ put_filled_tri := fn(surface: Surface, p0: Vec2(uint), p1: Vec2(uint), p2: Vec2(
 	primary_dx := @as(int, @bitcast(p2.x - p0.x))
 	primary_dy := @as(int, @bitcast(p2.y - p0.y))
 	primary_x := p0.x
-	primary_step := primary_dx / primary_dy
+	primary_step := @as(int, primary_dx) / @as(int, primary_dy)
 	primary_error := @as(int, 2) * primary_dx - primary_dy
 
 	secondary_dx := @as(int, @bitcast(p1.x - p0.x))
diff --git a/sysdata/programs/render_example/src/examples/cube.hb b/sysdata/programs/render_example/src/examples/cube.hb
index 20e5e6d..1cde5a3 100644
--- a/sysdata/programs/render_example/src/examples/cube.hb
+++ b/sysdata/programs/render_example/src/examples/cube.hb
@@ -1,11 +1,68 @@
-.{Vec2} := @use("../../../../libraries/stn/src/lib.hb").math
+.{Vec2} := @use("../../../../libraries/stn/src/lib.hb").math;
+.{log, string, memory} := @use("../../../../libraries/stn/src/lib.hb");
+.{Color, Surface} := @use("../../../../libraries/render/src/lib.hb")
 render := @use("../../../../libraries/render/src/lib.hb")
 
+Face := struct {a: uint, b: uint, c: uint, mode: u8, color: Color, texture: ^Surface}
+WIREFRAME := @as(u8, 0)
+FILLED := @as(u8, 1)
+TEXTURED := @as(u8, 2)
+
+Vec3 := struct {x: int, y: int, z: int}
+
+vertecies := [Vec3].(.(-1, -1, -1), .(1, -1, -1), .(1, 1, -1), .(-1, 1, -1), .(-1, -1, 1), .(1, -1, 1), .(1, 1, 1), .(-1, 1, 1))
+projected := @as([Vec3; 8], idk)
+
+faces := [Face].(Face.(0, 1, 2, WIREFRAME, .(255, 0, 0, 255), @as(^Surface, idk)))
+
+d := @as(int, 1)
+
 example := fn(): void {
 	screen := render.init(true)
+
+	unit := @as(int, 0)
+	half_width := @as(int, @intcast(screen.width / 2))
+	half_height := @as(int, @intcast(screen.height / 2))
+	if screen.width < screen.height {
+		unit = @intcast(half_width / 2)
+	} else {
+		unit = @intcast(half_height / 2)
+	}
+
+	format_page := @as([u8; 1024], idk)
 	loop {
+		index := 0
+		loop if index == 8 break else {
+			vertex := vertecies[index]
+			vertex = .(vertex.x * unit, vertex.y * unit, vertex.z * unit + unit)
+
+			vertex = .(vertex.x * d / (vertex.z / unit + d) + half_width, vertex.y * d / (vertex.z / unit + d) + half_height, vertex.z)
+			projected[index] = vertex
+
+			log.info(string.display_int(vertex.x, @bitcast(&format_page), 10))
+			log.info(string.display_int(vertex.y, @bitcast(&format_page), 10))
+
+			index += 1
+		}
+
+		index = 0
 		render.clear(screen, render.black)
-		render.put_filled_tri(screen, .(128, 256), .(512, 512), .(10, 10), .(255, 255, 255, 255))
+		loop if index == 1 break else {
+			face := faces[index]
+
+			a := projected[face.a]
+			b := projected[face.b]
+			c := projected[face.c]
+
+			if face.mode == WIREFRAME {
+				render.put_tri(screen, .(@intcast(a.x), @intcast(a.y)), .(@intcast(b.x), @intcast(b.y)), .(@intcast(c.x), @intcast(c.y)), face.color)
+			}
+
+			index += 1
+		}
+		
+
+		//render.put_filled_tri(screen, .(128, 256), .(512, 512), .(10, 10), .(255, 255, 255, 255))
 		render.sync(screen)
 	}
 	return
diff --git a/sysdata/programs/render_example/src/main.hb b/sysdata/programs/render_example/src/main.hb
index 2495e15..8f2d2c0 100644
--- a/sysdata/programs/render_example/src/main.hb
+++ b/sysdata/programs/render_example/src/main.hb
@@ -1,3 +1,3 @@
-.{example} := @use("./examples/gravity.hb")
+.{example} := @use("./examples/cube.hb")
 
 main := example
\ No newline at end of file