Synthasmagoria/transformation_visualizer
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fixed matrix math order

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Synthasmagoria 2026-08-30 00:24:02 +02:00
commit 9b550856fb
5 changed files with 125 additions and 60 deletions
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46
src/program.odin
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@ -545,10 +545,10 @@ program_update :: proc() {
for draggable in program.mouse_draggables {
switch draggable in draggable {
case MouseDraggable_Point:
position_world := (v3{**draggable.ref^, 1.0} * grid_to_world_matrix).xy
position_world := matrix3_transform_v2(grid_to_world_matrix, draggable.ref^)
rl.DrawCircleV(position_world, program.mouse_draggable_radius, ANIMATION_COLOR_ORIGIN)
case MouseDraggable_RectangleCornerData:
position_world := (v3{**draggable.corner_ref^, 1.0} * grid_to_world_matrix).xy
position_world := matrix3_transform_v2(grid_to_world_matrix, draggable.corner_ref^)
rl.DrawCircleV(position_world, program.mouse_draggable_radius, ANIMATION_COLOR_ORIGIN)
case MouseDraggable_RectangleData:
}
@ -608,17 +608,31 @@ program_add_rotation_matrix :: proc(angle: f32) {
case .Degrees: radians = linalg.RAD_PER_DEG * angle
case .Radians: radians = angle
}
rotmat := linalg.matrix2_rotate_f32(angle)
fmt.bprint(value_strings[0][:], rotmat[0, 0])
values[0] = rotmat[0, 0]
fmt.bprint(value_strings[1][:], rotmat[0, 1])
values[1] = rotmat[0, 1]
fmt.bprint(value_strings[3][:], rotmat[1, 0])
values[3] = rotmat[1, 0]
fmt.bprint(value_strings[4][:], rotmat[1, 1])
values[4] = rotmat[1, 1]
a := linalg.cos(radians)
b := linalg.sin(radians)
fmt.bprint(value_strings[0][:], a)
values[0] = a
fmt.bprint(value_strings[1][:], -b)
values[1] = b
fmt.bprint(value_strings[3][:], b)
values[3] = a
fmt.bprint(value_strings[4][:], a)
values[4] = a
fmt.bprint(value_strings[8][:], 1)
values[8] = 1.0
// rotmat := linalg.matrix2_rotate_f32(angle)
// fmt.bprint(value_strings[0][:], rotmat[0, 0])
// values[0] = rotmat[0, 0]
// fmt.bprint(value_strings[1][:], rotmat[0, 1])
// values[1] = rotmat[0, 1]
// fmt.bprint(value_strings[1][:], rotmat[1, 0])
// values[3] = rotmat[1, 0]
// fmt.bprint(value_strings[4][:], rotmat[1, 1])
// values[4] = rotmat[1, 1]
// fmt.bprint(value_strings[8][:], 1)
// values[8] = 1.0
}
program_build_dialog_ui :: proc(ctx: ^ui.Context, dialog_type: ProgramDialogType) -> []ui.Element {
@ -847,21 +861,21 @@ program_handle_mouse :: proc(mouse_state: MouseState, top_bar_container, matrix_
for draggable in program.mouse_draggables {
switch draggable in draggable {
case MouseDraggable_Point:
circle_position := (v3{**draggable.ref^, 1.0} * grid_to_world_matrix).xy
circle_position := matrix3_transform_v2(grid_to_world_matrix, draggable.ref^)
if linalg.distance(mouse, circle_position) <= program.mouse_draggable_radius {
program.mouse_current_draggable = draggable
mouse_state = .DraggingDraggable
break state_label
}
case MouseDraggable_RectangleCornerData:
circle_position := (v3{**draggable.corner_ref^, 1.0} * grid_to_world_matrix).xy
circle_position := matrix3_transform_v2(grid_to_world_matrix, draggable.corner_ref^)
if linalg.distance(mouse, circle_position) <= program.mouse_draggable_radius {
program.mouse_current_draggable = draggable
mouse_state = .DraggingDraggable
break state_label
}
case MouseDraggable_RectangleData:
corners_world := rectangle_corners_transform_mat3(draggable.corners^, grid_to_world_matrix)
corners_world := rectangle_corners_transform_mat3(grid_to_world_matrix, draggable.corners^)
rect := rect_from(corners_world.tl, corners_world.tr, corners_world.br, corners_world.bl)
if rect_has_point(rect, mouse) {
program.mouse_current_draggable = draggable
@ -884,9 +898,9 @@ program_handle_mouse :: proc(mouse_state: MouseState, top_bar_container, matrix_
draggable := program.mouse_current_draggable
switch draggable in draggable {
case MouseDraggable_Point:
draggable.ref^ = (v3{**mouse, 1.0} * world_to_grid_matrix).xy
draggable.ref^ = matrix3_transform_v2(world_to_grid_matrix, mouse)
case MouseDraggable_RectangleCornerData:
position := (v3{**mouse, 1.0} * world_to_grid_matrix).xy
position := matrix3_transform_v2(world_to_grid_matrix, mouse)
corners := rectangle_corners_move_corner(draggable.corners_ref^, position, draggable.corner)
draggable.corners_ref^ = corners
case MouseDraggable_RectangleData: