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Man Pages


Manual Reference Pages  -  AL_CALCULATE_SPLINE (3)

NAME

al_calculate_spline - Allegro 5 API

CONTENTS

Synopsis
Description
See Also

SYNOPSIS

C]
#include <allegro5/allegro_primitives.h>

void al_calculate_spline(float* dest, int stride, float points[8], float thickness, int num_segments) ]

DESCRIPTION

Calculates a Bézier spline given 4 control points. If C]thickness <= 0], then C]num_segments] of points are required in the destination, otherwise twice as many are needed. The destination buffer should consist of regularly spaced (by distance of stride bytes) doublets of floats, corresponding to x and y coordinates of the vertices.

I]Parameters:]
[bu] dest - The destination buffer
[bu] stride - Distance (in bytes) between starts of successive pairs of coordinates
[bu] points - An array of 4 pairs of coordinates of the 4 control points
[bu] thickness - Thickness of the spline ribbon
[bu] num_segments - The number of points to calculate

SEE ALSO

al_draw_spline(3), al_calculate_arc(3), al_calculate_ribbon(3)

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Allegro reference manual AL_CALCULATE_SPLINE (3)

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