Ammerhai/Mikemon
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switch to reverse z and get rid of tilt sign flip

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This commit is contained in:
Sven Balzer 2026-04-01 18:01:39 +02:00
parent 538849e607
commit 3b7d593f4e
1 changed files with 19 additions and 19 deletions
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38
src/math_graphics.cpp
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@ -874,27 +874,27 @@ namespace M {
} }
M4x4 view(V3 player_pos, float tilt, float camera_distance) { M4x4 view(V3 player_pos, float tilt, float camera_distance) {
float s = sinf(-tilt); float s = sinf(tilt);
float c = cosf(-tilt); float c = cosf(tilt);
return M4x4_( return {
1, 0, 0, -player_pos.x, 1, 0, 0, -player_pos.x,
0, c, s, c * -player_pos.y, 0, c, s, c * -player_pos.y,
0, -s, c, s * player_pos.y + camera_distance, 0, -s, c, s * player_pos.y - camera_distance,
0, 0, 0, 1 0, 0, 0, 1,
); };
} }
M4x4 inverse_view(V3 player_pos, float tilt, float camera_distance) { M4x4 inverse_view(V3 player_pos, float tilt, float camera_distance) {
float s = sinf(-tilt); float s = sinf(tilt);
float c = cosf(-tilt); float c = cosf(tilt);
return M4x4_( return {
1, 0, 0, player_pos.x, 1, 0, 0, player_pos.x,
0, c, -s, s * camera_distance + player_pos.y, 0, c, -s, -s * camera_distance + player_pos.y,
0, s, c, c * -camera_distance, 0, s, c, c * camera_distance,
0, 0, 0, 1 0, 0, 0, 1,
); };
} }
M4x4 projection(float fovy, float aspect, float near) { M4x4 projection(float fovy, float aspect, float near) {
@ -904,7 +904,7 @@ namespace M {
g / aspect, 0, 0, 0, g / aspect, 0, 0, 0,
0, g, 0, 0, 0, g, 0, 0,
0, 0, 0, near, 0, 0, 0, near,
0, 0, 1, 0, 0, 0, -1, 0,
}; };
} }
@ -912,10 +912,10 @@ namespace M {
float g = 1.0 / tanf(fovy * 0.5); float g = 1.0 / tanf(fovy * 0.5);
return { return {
aspect / g, 0, 0, 0, aspect / g, 0, 0, 0,
0, 1 / g, 0, 0, 0, 1 / g, 0, 0,
0, 0, 0, 1, 0, 0, 0, -1,
0, 0, 1 / near, 0, 0, 0, 1 / near, 0,
}; };
} }
} }