65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
#include "qjs_spline.h"
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#include "qjs_macros.h"
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#include "jsffi.h"
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#include "spline.h"
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#include "HandmadeMath.h"
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#include "stb_ds.h"
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// Helper functions - these are duplicated from jsffi.c as they're used there too
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static HMM_Vec2 *js2cpvec2arr(JSContext *js, JSValue v) {
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HMM_Vec2 *arr = NULL;
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int n = JS_ArrayLength(js, v);
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arrsetlen(arr, n);
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for (int i = 0; i < n; i++)
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arr[i] = js2vec2(js, JS_GetPropertyUint32(js, v, i));
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return arr;
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}
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static JSValue vecarr2js(JSContext *js, HMM_Vec2 *points, int n) {
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JSValue array = JS_NewArray(js);
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for (int i = 0; i < n; i++)
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JS_SetPropertyUint32(js, array, i, vec22js(js, points[i]));
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return array;
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}
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JSC_CCALL(spline_catmull,
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HMM_Vec2 *points = js2cpvec2arr(js, argv[0]);
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float param = js2number(js, argv[1]);
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HMM_Vec2 *samples = catmull_rom_ma_v2(points, param);
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if (!samples)
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ret = JS_UNDEFINED;
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else
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ret = vecarr2js(js, samples, arrlen(samples));
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arrfree(points);
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arrfree(samples);
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)
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JSC_CCALL(spline_bezier,
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HMM_Vec2 *points = js2cpvec2arr(js, argv[0]);
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float param = js2number(js, argv[1]);
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HMM_Vec2 *samples = bezier_cb_ma_v2(points, param);
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if (!samples)
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ret = JS_UNDEFINED;
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else
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ret = vecarr2js(js, samples, arrlen(samples));
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arrfree(samples);
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arrfree(points);
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)
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static const JSCFunctionListEntry js_spline_funcs[] = {
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MIST_FUNC_DEF(spline, catmull, 2),
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MIST_FUNC_DEF(spline, bezier, 2)
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};
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JSValue js_spline_use(JSContext *js) {
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JSValue mod = JS_NewObject(js);
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JS_SetPropertyFunctionList(js, mod, js_spline_funcs, countof(js_spline_funcs));
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return mod;
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} |