NAME¶
al_calculate_ribbon - Allegro 5 API
SYNOPSIS¶
-
#include <allegro5/allegro_primitives.h>
void al_calculate_ribbon(float* dest, int dest_stride, const float *points,
int points_stride, float thickness, int num_segments)
DESCRIPTION¶
Calculates a ribbon given an array of points. The ribbon will go through all of
the passed points. If thickness <= 0, then num_segments of
points are required in the destination buffer, otherwise twice as many are
needed. The destination and the points buffer should consist of regularly
spaced doublets of floats, corresponding to x and y coordinates of the
vertices.
Parameters:
- •
- dest - Pointer to the destination buffer
- •
- dest_stride - Distance (in bytes) between starts of successive pairs of
coordinates in the destination buffer
- •
- points - An array of pairs of coordinates for each point
- •
- points_stride - Distance (in bytes) between starts successive pairs of
coordinates in the points buffer
- •
- thickness - Thickness of the spline ribbon
- •
- num_segments - The number of points to calculate
SEE ALSO¶
al_draw_ribbon(3alleg5), al_calculate_arc(3alleg5),
al_calculate_spline(3alleg5)