From 0cfd97a29000a6ca120750dd412c6d12c8be7459 Mon Sep 17 00:00:00 2001 From: luboslenco Date: Tue, 31 Mar 2026 12:38:57 +0200 Subject: [PATCH] paint: implement camera pivot - cursor --- paint/sources/camera.c | 362 +++++++++++++++++++++++++++-------------- 1 file changed, 239 insertions(+), 123 deletions(-) diff --git a/paint/sources/camera.c b/paint/sources/camera.c index 67e8d80d..c1e8ebd6 100644 --- a/paint/sources/camera.c +++ b/paint/sources/camera.c @@ -1,36 +1,238 @@ #include "global.h" +static bool camera_wrap_mouse() { + if (mouse_view_x() < 0 || mouse_view_x() > sys_w() || mouse_view_y() < 0 || mouse_view_y() > sys_h()) { + if (!config_raw->wrap_mouse || !camera_controls_down) { + return false; + } + if (mouse_view_x() < 0) { + mouse_x = mouse_last_x = sys_x() + sys_w(); + iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); + } + else if (mouse_view_x() > sys_w()) { + mouse_x = mouse_last_x = sys_x(); + iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); + } + else if (mouse_view_y() < 0) { + mouse_y = mouse_last_y = sys_y() + sys_h(); + iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); + } + else if (mouse_view_y() > sys_h()) { + mouse_y = mouse_last_y = sys_y(); + iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); + } + } + return true; +} + +static void camera_orbit_action(bool modif, bool default_keymap) { + camera_object_t *camera = scene_camera; + camera_redraws = 2; + + if (context_raw->camera_pivot == CAMERA_PIVOT_CURSOR) { + static f32 pivot_x = 0; + static f32 pivot_y = 0; + static f32 pivot_z = 0; + static bool pivot_valid = false; + + bool rotate_started = + operator_shortcut(any_map_get(config_keymap, "action_rotate"), SHORTCUT_TYPE_STARTED) || (mouse_started("right") && !modif && default_keymap); + if (rotate_started) { + util_render_pick_pos_nor_tex(); + pivot_valid = math_abs(context_raw->posx_picked) < 50 && math_abs(context_raw->posy_picked) < 50 && math_abs(context_raw->posz_picked) < 50; + if (pivot_valid) { + pivot_x = context_raw->posx_picked; + pivot_y = context_raw->posy_picked; + pivot_z = context_raw->posz_picked; + } + } + + if (pivot_valid) { + f32 angle_x = -mouse_movement_x / 100.0 * config_raw->camera_rotation_speed; + f32 angle_y = -mouse_movement_y / 100.0 * config_raw->camera_rotation_speed; + + transform_rotate(camera->base->transform, vec4_z_axis(), angle_x); + vec4_t right = camera_object_right_world(camera); + transform_rotate(camera->base->transform, right, angle_y); + vec4_t up_world = camera_object_up_world(camera); + if (up_world.z < 0 && !config_raw->camera_upside_down) { + transform_rotate(camera->base->transform, right, -angle_y); + angle_y = 0.0; + } + + vec4_t offset = + vec4_create(camera->base->transform->loc.x - pivot_x, camera->base->transform->loc.y - pivot_y, camera->base->transform->loc.z - pivot_z, 0.0); + quat_t q_x = quat_from_axis_angle(vec4_z_axis(), angle_x); + quat_t q_y = quat_from_axis_angle(right, angle_y); + offset = vec4_apply_quat(offset, q_x); + offset = vec4_apply_quat(offset, q_y); + camera->base->transform->loc.x = pivot_x + offset.x; + camera->base->transform->loc.y = pivot_y + offset.y; + camera->base->transform->loc.z = pivot_z + offset.z; + camera_object_build_mat(camera); + return; + } + } + + f32 dist = camera_distance(); + transform_move(camera->base->transform, camera_object_look_world(camera), dist); + transform_rotate(camera->base->transform, vec4_z_axis(), -mouse_movement_x / 100.0 * config_raw->camera_rotation_speed); + transform_rotate(camera->base->transform, camera_object_right_world(camera), -mouse_movement_y / 100.0 * config_raw->camera_rotation_speed); + vec4_t up_world = camera_object_up_world(camera); + if (up_world.z < 0 && !config_raw->camera_upside_down) { + transform_rotate(camera->base->transform, camera_object_right_world(camera), mouse_movement_y / 100.0 * config_raw->camera_rotation_speed); + } + transform_move(camera->base->transform, camera_object_look_world(camera), -dist); +} + +static void camera_rotate_action(bool modif, bool default_keymap) { + camera_object_t *camera = scene_camera; + camera_redraws = 2; + transform_t *t = context_main_object()->base->transform; + vec4_t up = transform_up(t); + + if (context_raw->camera_pivot == CAMERA_PIVOT_CURSOR) { + static f32 pivot_x = 0; + static f32 pivot_y = 0; + static f32 pivot_z = 0; + static bool pivot_valid = false; + + bool rotate_started = + operator_shortcut(any_map_get(config_keymap, "action_rotate"), SHORTCUT_TYPE_STARTED) || (mouse_started("right") && !modif && default_keymap); + if (rotate_started) { + util_render_pick_pos_nor_tex(); + pivot_valid = math_abs(context_raw->posx_picked) < 50 && math_abs(context_raw->posy_picked) < 50 && math_abs(context_raw->posz_picked) < 50; + if (pivot_valid) { + pivot_x = context_raw->posx_picked; + pivot_y = context_raw->posy_picked; + pivot_z = context_raw->posz_picked; + } + } + + if (pivot_valid) { + f32 angle_x = (mouse_movement_x / 120.0) * config_raw->camera_rotation_speed; + f32 angle_y = (mouse_movement_y / 120.0) * config_raw->camera_rotation_speed; + vec4_t right = camera_object_right_world(camera); + + transform_rotate(t, up, angle_x); + transform_rotate(t, right, angle_y); + transform_build_matrix(t); + vec4_t tup = transform_up(t); + if (tup.z < 0 && !config_raw->camera_upside_down) { + transform_rotate(t, right, -angle_y); + angle_y = 0.0; + } + + vec4_t offset = vec4_create(t->loc.x - pivot_x, t->loc.y - pivot_y, t->loc.z - pivot_z, 0.0); + quat_t q_x = quat_from_axis_angle(up, angle_x); + quat_t q_y = quat_from_axis_angle(right, angle_y); + offset = vec4_apply_quat(offset, q_x); + offset = vec4_apply_quat(offset, q_y); + t->loc.x = pivot_x + offset.x; + t->loc.y = pivot_y + offset.y; + t->loc.z = pivot_z + offset.z; + transform_build_matrix(t); + return; + } + } + + transform_rotate(t, up, (mouse_movement_x / 120.0) * config_raw->camera_rotation_speed); + vec4_t right = camera_object_right_world(camera); + transform_rotate(t, right, (mouse_movement_y / 120.0) * config_raw->camera_rotation_speed); + transform_build_matrix(t); + vec4_t tup = transform_up(t); + if (tup.z < 0 && !config_raw->camera_upside_down) { + transform_rotate(t, right, -(mouse_movement_y / 120.0) * config_raw->camera_rotation_speed); + } +} + +static void camera_zoom_action(bool modif_key) { + camera_object_t *camera = scene_camera; + + if (operator_shortcut(any_map_get(config_keymap, "action_zoom"), SHORTCUT_TYPE_DOWN)) { + camera_redraws = 2; + f32 f = camera_get_zoom_delta() / (float)(150.0 * (1.0 / (camera_distance() / 2.0))); + f *= camera_get_zoom_speed(); + transform_move(camera->base->transform, camera_object_look(camera), f); + } + + if (mouse_wheel_delta != 0 && !modif_key) { + camera_redraws = 2; + f32 f = mouse_wheel_delta * (-0.2) * ((camera_distance() / 4.0)); + f *= camera_get_zoom_speed(); + transform_move(camera->base->transform, camera_object_look(camera), f); + } +} + +static void camera_fly_action(bool modif_key) { + camera_object_t *camera = scene_camera; + + bool move_forward = keyboard_down("w") || keyboard_down("up") || mouse_wheel_delta < 0; + bool move_backward = keyboard_down("s") || keyboard_down("down") || mouse_wheel_delta > 0; + bool strafe_left = keyboard_down("a") || keyboard_down("left"); + bool strafe_right = keyboard_down("d") || keyboard_down("right"); + bool strafe_up = keyboard_down("e"); + bool strafe_down = keyboard_down("q"); + f32 fast = keyboard_down("shift") ? 2.0 : (keyboard_down("alt") ? 0.5 : 1.0); + if (mouse_wheel_delta != 0) { + fast *= math_abs(mouse_wheel_delta) * 4.0; + } + + if (move_forward || move_backward || strafe_right || strafe_left || strafe_up || strafe_down) { + camera_ease += sys_delta() * 15; + if (camera_ease > 1.0) { + camera_ease = 1.0; + } + camera_dir = vec4_create(0, 0, 0, 1.0); + vec4_t look = camera_object_look(camera); + vec4_t right = camera_object_right(camera); + if (move_forward) { + camera_dir = vec4_fadd(camera_dir, look.x, look.y, look.z, 0.0); + } + if (move_backward) { + camera_dir = vec4_fadd(camera_dir, -look.x, -look.y, -look.z, 0.0); + } + if (strafe_right) { + camera_dir = vec4_fadd(camera_dir, right.x, right.y, right.z, 0.0); + } + if (strafe_left) { + camera_dir = vec4_fadd(camera_dir, -right.x, -right.y, -right.z, 0.0); + } + if (strafe_up) { + camera_dir = vec4_fadd(camera_dir, 0, 0, 1, 0.0); + } + if (strafe_down) { + camera_dir = vec4_fadd(camera_dir, 0, 0, -1, 0.0); + } + } + else { + camera_ease -= sys_delta() * 20.0 * camera_ease; + if (camera_ease < 0.0) { + camera_ease = 0.0; + } + } + + f32 d = sys_delta() * fast * camera_ease * 2.0 * ((move_forward || move_backward) ? config_raw->camera_zoom_speed : config_raw->camera_pan_speed); + if (d > 0.0) { + transform_move(camera->base->transform, camera_dir, d); + if (context_raw->camera_type == CAMERA_TYPE_ORTHOGRAPHIC) { + viewport_update_camera_type(context_raw->camera_type); + } + } + + camera_redraws = 2; + transform_rotate(camera->base->transform, vec4_z_axis(), -mouse_movement_x / 200.0 * config_raw->camera_rotation_speed); + transform_rotate(camera->base->transform, camera_object_right(camera), -mouse_movement_y / 200.0 * config_raw->camera_rotation_speed); +} + void camera_init() { camera_reset(-1); } -void camera_update(void * _) { - camera_object_t *camera = scene_camera; - - if (mouse_view_x() < 0 || mouse_view_x() > sys_w() || mouse_view_y() < 0 || mouse_view_y() > sys_h()) { - - if (config_raw->wrap_mouse && camera_controls_down) { - if (mouse_view_x() < 0) { - mouse_x = mouse_last_x = sys_x() + sys_w(); - iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); - } - else if (mouse_view_x() > sys_w()) { - mouse_x = mouse_last_x = sys_x(); - iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); - } - else if (mouse_view_y() < 0) { - mouse_y = mouse_last_y = sys_y() + sys_h(); - iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); - } - else if (mouse_view_y() > sys_h()) { - mouse_y = mouse_last_y = sys_y(); - iron_mouse_set_position(math_floor(mouse_x), math_floor(mouse_y)); - } - } - else { - return; - } +void camera_update(void *_) { + if (!camera_wrap_mouse()) { + return; } bool modif_key = keyboard_down("alt") || keyboard_down("shift") || keyboard_down("control"); @@ -57,108 +259,22 @@ void camera_update(void * _) { } camera_controls_t controls = context_raw->camera_controls; + if (controls == CAMERA_CONTROLS_ORBIT && (operator_shortcut(any_map_get(config_keymap, "action_rotate"), SHORTCUT_TYPE_DOWN) || (mouse_down("right") && !modif && default_keymap))) { - camera_redraws = 2; - f32 dist = camera_distance(); - transform_move(camera->base->transform, camera_object_look_world(camera), dist); - transform_rotate(camera->base->transform, vec4_z_axis(), -mouse_movement_x / 100.0 * config_raw->camera_rotation_speed); - transform_rotate(camera->base->transform, camera_object_right_world(camera), -mouse_movement_y / 100.0 * config_raw->camera_rotation_speed); - vec4_t up_world = camera_object_up_world(camera); - if (up_world.z < 0 && !config_raw->camera_upside_down) { - transform_rotate(camera->base->transform, camera_object_right_world(camera), mouse_movement_y / 100.0 * config_raw->camera_rotation_speed); - } - transform_move(camera->base->transform, camera_object_look_world(camera), -dist); + camera_orbit_action(modif, default_keymap); } else if (controls == CAMERA_CONTROLS_ROTATE && (operator_shortcut(any_map_get(config_keymap, "action_rotate"), SHORTCUT_TYPE_DOWN) || (mouse_down("right") && !modif && default_keymap))) { - camera_redraws = 2; - transform_t *t = context_main_object()->base->transform; - vec4_t up = transform_up(t); - transform_rotate(t, up, (mouse_movement_x / 120.0) * config_raw->camera_rotation_speed); - vec4_t right = camera_object_right_world(camera); - transform_rotate(t, right, (mouse_movement_y / 120.0) * config_raw->camera_rotation_speed); - transform_build_matrix(t); - vec4_t tup = transform_up(t); - if (tup.z < 0 && !config_raw->camera_upside_down) { - transform_rotate(t, right, -(mouse_movement_y / 120.0) * config_raw->camera_rotation_speed); - } + camera_rotate_action(modif, default_keymap); } if (controls == CAMERA_CONTROLS_ROTATE || controls == CAMERA_CONTROLS_ORBIT) { camera_pan_action(modif, default_keymap); - - if (operator_shortcut(any_map_get(config_keymap, "action_zoom"), SHORTCUT_TYPE_DOWN)) { - camera_redraws = 2; - f32 f = camera_get_zoom_delta() / (float)(150.0 * (1.0 / (camera_distance() / 2.0))); - f *= camera_get_zoom_speed(); - transform_move(camera->base->transform, camera_object_look(camera), f); - } - - if (mouse_wheel_delta != 0 && !modif_key) { - camera_redraws = 2; - f32 f = mouse_wheel_delta * (-0.2) * ((camera_distance() / 4.0)); - f *= camera_get_zoom_speed(); - transform_move(camera->base->transform, camera_object_look(camera), f); - } + camera_zoom_action(modif_key); } else if (controls == CAMERA_CONTROLS_FLY && mouse_down("right")) { - bool move_forward = keyboard_down("w") || keyboard_down("up") || mouse_wheel_delta < 0; - bool move_backward = keyboard_down("s") || keyboard_down("down") || mouse_wheel_delta > 0; - bool strafe_left = keyboard_down("a") || keyboard_down("left"); - bool strafe_right = keyboard_down("d") || keyboard_down("right"); - bool strafe_up = keyboard_down("e"); - bool strafe_down = keyboard_down("q"); - f32 fast = keyboard_down("shift") ? 2.0 : (keyboard_down("alt") ? 0.5 : 1.0); - if (mouse_wheel_delta != 0) { - fast *= math_abs(mouse_wheel_delta) * 4.0; - } - - if (move_forward || move_backward || strafe_right || strafe_left || strafe_up || strafe_down) { - camera_ease += sys_delta() * 15; - if (camera_ease > 1.0) { - camera_ease = 1.0; - } - camera_dir = vec4_create(0, 0, 0, 1.0); - vec4_t look = camera_object_look(camera); - vec4_t right = camera_object_right(camera); - if (move_forward) { - camera_dir = vec4_fadd(camera_dir, look.x, look.y, look.z, 0.0); - } - if (move_backward) { - camera_dir = vec4_fadd(camera_dir, -look.x, -look.y, -look.z, 0.0); - } - if (strafe_right) { - camera_dir = vec4_fadd(camera_dir, right.x, right.y, right.z, 0.0); - } - if (strafe_left) { - camera_dir = vec4_fadd(camera_dir, -right.x, -right.y, -right.z, 0.0); - } - if (strafe_up) { - camera_dir = vec4_fadd(camera_dir, 0, 0, 1, 0.0); - } - if (strafe_down) { - camera_dir = vec4_fadd(camera_dir, 0, 0, -1, 0.0); - } - } - else { - camera_ease -= sys_delta() * 20.0 * camera_ease; - if (camera_ease < 0.0) { - camera_ease = 0.0; - } - } - - f32 d = sys_delta() * fast * camera_ease * 2.0 * ((move_forward || move_backward) ? config_raw->camera_zoom_speed : config_raw->camera_pan_speed); - if (d > 0.0) { - transform_move(camera->base->transform, camera_dir, d); - if (context_raw->camera_type == CAMERA_TYPE_ORTHOGRAPHIC) { - viewport_update_camera_type(context_raw->camera_type); - } - } - - camera_redraws = 2; - transform_rotate(camera->base->transform, vec4_z_axis(), -mouse_movement_x / 200.0 * config_raw->camera_rotation_speed); - transform_rotate(camera->base->transform, camera_object_right(camera), -mouse_movement_y / 200.0 * config_raw->camera_rotation_speed); + camera_fly_action(modif_key); } if (operator_shortcut(any_map_get(config_keymap, "view_pivot_center"), SHORTCUT_TYPE_STARTED)) { @@ -228,7 +344,7 @@ void camera_reset(i32 view_index) { camera_views->buffer[view_index]->v = mat4_clone(camera->base->transform->local); } - #ifdef IRON_IOS +#ifdef IRON_IOS if (config_is_iphone()) { viewport_zoom(-2.8); vec4_t right = vec4_mult(transform_right(camera->base->transform), -0.135); @@ -236,7 +352,7 @@ void camera_reset(i32 view_index) { camera_origins->buffer[camera_index()]->v = vec4_add(camera_origins->buffer[camera_index()]->v, right); camera_object_build_mat(camera); } - #endif +#endif } void camera_pan_action(bool modif, bool default_keymap) { @@ -269,10 +385,10 @@ void camera_set_pivot_center_to_mouse() { return; } - vec4_box_t *o = camera_origins->buffer[camera_index()]; - o->v.x = context_raw->posx_picked; - o->v.y = context_raw->posy_picked; - o->v.z = context_raw->posz_picked; + vec4_box_t *o = camera_origins->buffer[camera_index()]; + o->v.x = context_raw->posx_picked; + o->v.y = context_raw->posy_picked; + o->v.z = context_raw->posz_picked; camera_redraws = 2; camera_object_t *camera = scene_camera;