@huukhanhnguyen/geometry / namespaces/Projection

namespaces/Projection#

clipPolygonToWindow#

const clipPolygonToWindow: (polygon, min_x, max_x, min_y, max_y) => Float64Array = wasm.projection_clip_polygon_to_window

Parameters#

polygon#

Float64Array

min_x#

number

max_x#

number

min_y#

number

max_y#

number

Returns#

Float64Array

clipSegmentToLoops#

const clipSegmentToLoops: (start_x, start_y, end_x, end_y, loops_json) => string = wasm.projection_clip_segment_to_loops

Parameters#

start_x#

number

start_y#

number

end_x#

number

end_y#

number

loops_json#

string

Returns#

string

clipSegmentToWindow#

const clipSegmentToWindow: (start_x, start_y, end_x, end_y, min_x, max_x, min_y, max_y) => Float64Array = wasm.projection_clip_segment_to_window

Parameters#

start_x#

number

start_y#

number

end_x#

number

end_y#

number

min_x#

number

max_x#

number

min_y#

number

max_y#

number

Returns#

Float64Array

hiddenLineEdges#

const hiddenLineEdges: (triangles, forward_x, forward_y, forward_z) => Float64Array = wasm.projection_hidden_line_edges

Classifies every silhouette/feature edge of a view mesh into visible and hidden 2D segments.

IN: 15 f64 per triangle — world [ax, ay, az, bx, by, bz, cx, cy, cz] then projected [ax, ay, bx, by, cx, cy]; a trailing partial triangle is ignored. forward_* is the axis pointing AWAY from the viewer.

OUT: the header-prefixed packing point_cloud_cluster uses — [visible_segment_count, ...visible, ...hidden], each segment [x0, y0, x1, y1]. Segment order is the TS emission order and is part of the contract.

Parameters#

triangles#

Float64Array

forward_x#

number

forward_y#

number

forward_z#

number

Returns#

Float64Array

pointInLoops#

const pointInLoops: (loops_json, x, y) => boolean = wasm.projection_point_in_loops

Parameters#

loops_json#

string

x#

number

y#

number

Returns#

boolean

sectionBasis#

const sectionBasis: (nx, ny, nz) => Float64Array = wasm.projection_section_basis

Parameters#

nx#

number

ny#

number

nz#

number

Returns#

Float64Array