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Holdline Blending Sample

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This section contains snippets of C++ code to illustrate how to use the API, api_blend_holdline to perform blending using a holdline. These snippets are designed to be very simple starting points for developing your own code - they are not complete, compiling and runtime programs.

// Define some variables. BODY *b1 = NULL, *b2 = NULL; ENTITY_LIST edges_to_blend, hl_edge, tmp; double* ray_params = NULL; EDGE *holdline_edge; // Build some geometry to blend. // Make a block. check_outcome(result = api_make_cuboid (50,50,10, b1)); // Make a cylinder that intersects the block. check_outcome(result = api_make_frustum(50, 5, 5, 5, b2)); // Rotate the cylinder a little. check_outcome(result = api_apply_transf(b2, rotate_transf(.349, SPAvector(1,0,0)))); // Unite the cylinder and block. check_outcome(result = api_unite( b2, b1 )); // Pick the edge where the cylinder intersects the block. This edge will be blended. check_outcome( result = api_get_ents(SPAposition(0,0,5), SPAunit_vector(-1,0,0),                                                             0.01, EDGE_TYPE, b1, tmp, ray_params)); // Make the list of edges to blend (just one in this case). edges_to_blend.add(tmp.next()); // Define the center of the holdline curve. SPAposition center(0,-1.819,5); // Make a circular edge for the holdline. check_outcome(result = api_curve_arc(center, 10, -M_PI, M_PI, holdline_edge)); // Add the holdline edge to an entity list. hl_edge.add(holdline_edge); // Call the API to blend using the holdline. api_blend_holdline(edges_to_blend, hl_edge); // Clean up memory as necessary

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