41 lines
914 B
C
41 lines
914 B
C
/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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#ifndef cglm_curve_h
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#define cglm_curve_h
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#include "common.h"
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#include "vec4.h"
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#include "mat4.h"
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/*!
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* @brief helper function to calculate S*M*C multiplication for curves
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*
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* This function does not encourage you to use SMC,
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* instead it is a helper if you use SMC.
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*
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* if you want to specify S as vector then use more generic glm_mat4_rmc() func.
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*
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* Example usage:
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* B(s) = glm_smc(s, GLM_BEZIER_MAT, (vec4){p0, c0, c1, p1})
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*
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* @param[in] s parameter between 0 and 1 (this will be [s3, s2, s, 1])
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* @param[in] m basis matrix
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* @param[in] c position/control vector
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*
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* @return B(s)
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*/
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CGLM_INLINE
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float
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glm_smc(float s, mat4 m, vec4 c) {
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vec4 vs;
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glm_vec4_cubic(s, vs);
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return glm_mat4_rmc(vs, m, c);
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}
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#endif /* cglm_curve_h */
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