spline editing
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e06d12213f
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56c8542797
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@ -611,15 +611,25 @@ component.edge2d = Object.copy(collider2d, {
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return spoints;
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}
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if (this.looped) {
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spoints.unshift(spoints[spoints.length-1]);
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spoints.push(spoints[1]);
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spoints.push(spoints[2]);
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} else {
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spoints.unshift(spoints[0].sub(spoints[1]).add(spoints[0]));
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spoints.push(spoints[spoints.length-1].sub(spoints[spoints.length-2]).add(spoints[spoints.length-1]));
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if (this.type === Spline.type.catmull) {
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if (this.looped) {
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spoints.unshift(spoints[spoints.length-1]);
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spoints.push(spoints[1]);
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spoints.push(spoints[2]);
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} else {
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spoints.unshift(spoints[0].sub(spoints[1]).add(spoints[0]));
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spoints.push(spoints[spoints.length-1].sub(spoints[spoints.length-2]).add(spoints[spoints.length-1]));
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}
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return Spline.sample_angle(this.type, spoints,this.angle);
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}
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var tp = [];
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for (var i = 0; i < spoints.length-1; i++)
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tp.push([spoints[i+1].sub(spoints[i]), spoints[i+1].sub(spoints[i])]);
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spoints = spoints.map((p,i) => p.concat(tp[i]));
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spoints = spoints.flat();
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return Spline.sample_angle(this.type, spoints, this.angle);
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},
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@ -729,6 +739,8 @@ bucket.inputs['C-l'].doc = "Toggle spline being looped.";
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bucket.inputs['C-c'] = function() { this.type = Spline.type.catmull; };
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bucket.inputs['C-c'].doc = "Set type of spline to catmull-rom.";
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bucket.inputs['C-b'] = function() { this.type = Spline.type.bezier; };
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bucket.inputs['C-o'] = function() { this.type = -1; };
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bucket.inputs['C-o'].doc = "Set spline to linear.";
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@ -13,6 +13,18 @@ var Shape = {
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};
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var Debug = {
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fn_break(fn, obj) {
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if (typeof fn !== 'function') return;
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obj ??= globalThis;
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var newfn = function() {
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console.log("broke");
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fn();
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};
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obj[fn.name] = newfn;
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},
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draw_grid(width, span, color) {
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color = color ? color : Color.green;
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cmd(47, width, span, color);
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@ -335,18 +335,12 @@ function Color(from) {
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var Spline = {};
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Spline.sample_angle = function(type, points, angle) {
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var s = spline_cmd(0, type, 2, points, angle);
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return s;
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}
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Spline.sample = function(degrees, dimensions, type, ctrl_points, nsamples)
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{
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var s = spline_cmd(0, degrees,dimensions,type,ctrl_points,nsamples);
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console.warn(s);
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return s;
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return spline_cmd(0, type, points[0].length, points, angle);
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}
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Spline.type = {
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catmull: 0,
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beziers: 1,
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bezier: 1,
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bspline: 2,
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cubichermite: 3
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};
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@ -383,16 +383,24 @@ JSValue bb2js(struct boundingbox bb)
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JSValue duk_spline_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) {
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int cmd = js2int(argv[0]);
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/*
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0: hermite-cubic
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1: catmull-rom
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2: b-spline
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3: bezier
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0: catmull-rom
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1: bezier
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*/
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int type = js2int(argv[1]);
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int d = js2int(argv[2]); /* dimensions: 1d, 2d, 3d ...*/
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HMM_Vec2 *points = js2cpvec2arr(argv[3]);
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float param = js2number(argv[4]);
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HMM_Vec2 *samples = catmull_rom_ma_v2(points, param);
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HMM_Vec2 *samples = NULL;
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switch(type) {
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case 0:
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samples = catmull_rom_ma_v2(points, param);
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break;
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case 1:
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samples = bezier_cb_ma_v2(points, param);
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break;
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}
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arrfree(points);
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if (!samples)
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@ -1815,19 +1823,6 @@ JSValue duk_inflate_cpv(JSContext *js, JSValueConst this, int argc, JSValueConst
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return arr;
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}
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/* These are anims for controlling properties on an object */
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JSValue duk_anim(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) {
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return JS_UNDEFINED;
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}
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JSValue duk_make_timer(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) {
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// double secs = js2number(argv[1]);
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// struct callee *c = make_callee(argv[0], argv[3]);
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// int id = timer_make(secs, call_callee, c, 1, js2bool(argv[2]));
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// return JS_NewInt64(js, id);
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return JS_UNDEFINED;
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}
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JSValue duk_cmd_points(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
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{
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int n = js_arrlen(argv[1]);
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@ -1847,29 +1842,6 @@ JSValue duk_cmd_points(JSContext *js, JSValueConst this, int argc, JSValueConst
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return JS_UNDEFINED;
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}
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//#include "dlfcn.h"
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/*JSValue duk_cffi(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
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{
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void *fn = dlsym(dlopen(NULL,0), "puts");
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ffi_cif cif;
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ffi_type *args[1];
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void *values[1];
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char *s;
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ffi_arg rc;
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args[0] = &ffi_type_pointer;
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values[0] = &s;
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if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1, &ffi_type_sint, args) == FFI_OK) {
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s = "Hello World!";
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ffi_call(&cif, fn, &rc, values);
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s = "This is cool";
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ffi_call(&cif, fn, &rc, values);
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}
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return JS_UNDEFINED;
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}
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*/
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#define DUK_FUNC(NAME, ARGS) JS_SetPropertyStr(js, globalThis, #NAME, JS_NewCFunction(js, duk_##NAME, #NAME, ARGS));
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void ffi_load() {
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@ -1896,7 +1868,6 @@ void ffi_load() {
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DUK_FUNC(make_edge2d, 3)
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DUK_FUNC(cmd_edge2d, 6)
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DUK_FUNC(make_model,2);
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DUK_FUNC(make_timer, 4)
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DUK_FUNC(cmd_points, 5);
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@ -1909,9 +1880,6 @@ void ffi_load() {
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DUK_FUNC(inflate_cpv, 3)
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// DUK_FUNC(cffi,0);
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DUK_FUNC(anim, 2)
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JS_FreeValue(js,globalThis);
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JS_NewClassID(&js_ptr_id);
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@ -26,4 +26,14 @@ char *seprint(char *fmt, ...);
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void pack_engine(const char *fname);
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static inline void *stbarrdup(void *mem, size_t size, int len) {
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void *out = NULL;
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arrsetlen(out, len);
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memcpy(out,mem,size*len);
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return out;
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}
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#define arrconcat(a,b) do{for (int i = 0; i < arrlen(b); i++) arrput(a,b[i]);}while(0)
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#define arrdup(a) (stbarrdup(a, sizeof(*a), arrlen(a)))
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#endif
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@ -138,46 +138,28 @@ HMM_Vec4 spline_CT(HMM_Mat4 *C, float t)
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return HMM_MulM4V4(*C, T);
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}
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HMM_Mat4 make_G(HMM_Vec2 a, HMM_Vec2 b, HMM_Vec2 c, HMM_Vec2 d)
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HMM_Mat4 make_C(HMM_Vec2 *p, HMM_Mat4 *B)
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{
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HMM_Mat4 G;
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G.Columns[0].xy = a;
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G.Columns[1].xy = b;
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G.Columns[2].xy = c;
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G.Columns[3].xy = d;
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return G;
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}
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HMM_Mat4 make_C(HMM_Vec2 p0, HMM_Vec2 p1, HMM_Vec2 p2, HMM_Vec2 p3, HMM_Mat4 *B)
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{
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HMM_Mat4 G = make_G(p0, p1, p2, p3);
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G.Columns[0].xy = p[0];
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G.Columns[1].xy = p[1];
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G.Columns[2].xy = p[2];
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G.Columns[3].xy = p[3];
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return HMM_MulM4(G, *B);
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}
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HMM_Mat4 catmull_C(HMM_Vec2 c0, HMM_Vec2 c1, HMM_Vec2 c2, HMM_Vec2 c3)
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HMM_Vec2 cubic_spline_d(HMM_Vec2 *p, HMM_Mat4 *m, float d)
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{
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return make_C(c0,c1,c2,c3,&catmull_rom_m);
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}
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HMM_Vec2 cubic_spline_d(HMM_Vec2 p0, HMM_Vec2 p1, HMM_Vec2 p2, HMM_Vec2 p3, HMM_Mat4 *m, float d)
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{
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HMM_Mat4 G = make_G(p0,p1,p2,p3);
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HMM_Mat4 C = HMM_MulM4(G, *m);
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HMM_Mat4 C = make_C(p, m);
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return spline_CT(&C, d).xy;
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}
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HMM_Vec2 *spline_v2(HMM_Vec2 *a, HMM_Vec2 *b, HMM_Vec2 *c, HMM_Vec2 *d, HMM_Mat4 *m, int segs)
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HMM_Vec2 *spline_v2(HMM_Vec2 *p, HMM_Mat4 *m, int segs)
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{
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HMM_Vec2 *ret = NULL;
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if (segs == 2) {
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arrput(ret, *b);
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arrput(ret, *c);
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return ret;
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}
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if (segs < 2) return NULL;
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HMM_Mat4 G = make_G(*a, *b, *c, *d);
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HMM_Mat4 C = HMM_MulM4(G, *m);
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HMM_Mat4 C = make_C(p, m);
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float s = (float)1/segs;
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for (float t = 0; t < 1; t += s)
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@ -201,95 +183,46 @@ HMM_Vec2 *spline2d_min_seg(float u0, float u1, float min_seg, HMM_Mat4 *C, HMM_V
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HMM_Vec2 *catmull_rom_min_seg(HMM_Vec2 *a, HMM_Vec2 *b, HMM_Vec2 *c, HMM_Vec2 *d, float min_seg)
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{
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HMM_Vec2 p0 = HMM_MulV2F(HMM_SubV2(*c, *a), CAT_S);
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HMM_Vec2 p3 = HMM_MulV2F(HMM_SubV2(*d, *b), CAT_S);
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HMM_Mat4 G = make_G(p0, *b, *c, p3);
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HMM_Mat4 C = HMM_MulM4(G, catmull_rom_m);
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HMM_Vec2 *ret = NULL;
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arrsetcap(ret, 1000);
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arrput(ret, *b);
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spline2d_min_seg(0, 1, min_seg, &C, ret);
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// spline2d_min_seg(0, 1, min_seg, &C, ret);
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return ret;
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}
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void *stbarrdup(void *mem, size_t size, int len) {
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void *out = NULL;
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arrsetlen(out, len);
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memcpy(out,mem,size*len);
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return out;
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}
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#define arrconcat(a,b) do{for (int i = 0; i < arrlen(b); i++) arrput(a,b[i]);}while(0)
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#define arrdup(a) (stbarrdup(a, sizeof(*a), arrlen(a)))
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static HMM_Vec2 *V2RET = NULL;
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static HMM_Vec3 *V3RET = NULL;
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static HMM_Vec4 *V4RET = NULL;
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#define SPLINE_MIN(DIM) \
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HMM_Vec##DIM *spline2d_min_angle_##DIM(float u0, float u1, float max_angle, HMM_Mat4 *C) \
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{ \
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float umid = (u0 + u1)/2;\
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HMM_Vec##DIM a = spline_CT(C, u0)._##DIM;\
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HMM_Vec##DIM b = spline_CT(C, u1)._##DIM;\
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HMM_Vec##DIM m = spline_CT(C, umid)._##DIM;\
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if (HMM_AngleV##DIM(m,b) > max_angle) {\
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spline2d_min_angle_##DIM(u0, umid, max_angle, C);\
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spline2d_min_angle_##DIM(umid, u1, max_angle, C);\
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}\
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else\
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arrput(V##DIM##RET,b);\
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}\
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HMM_Vec2 *spline2d_min_angle_2(float u0, float u1, float max_angle, HMM_Mat4 *C, HMM_Vec2 *arr)
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{
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float umid = (u0 + u1)/2;
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HMM_Vec2 a = spline_CT(C, u0)._2;
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HMM_Vec2 b = spline_CT(C, u1)._2;
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HMM_Vec2 m = spline_CT(C, umid)._2;
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if (fabs(HMM_AngleV2(m,b)) > max_angle) {
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arr = spline2d_min_angle_2(u0, umid, max_angle, C, arr);
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arr = spline2d_min_angle_2(umid, u1, max_angle, C, arr);
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}
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else
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float ustep = (u1-u0)/4;
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float um0 = u0+ustep;
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float um1 = u0+(ustep*2);
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float um2 = u0+(ustep*3);
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HMM_Vec2 m0 = spline_CT(C, um0)._2;
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HMM_Vec2 m1 = spline_CT(C, um1)._2;
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HMM_Vec2 m2 = spline_CT(C,um2)._2;
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HMM_Vec2 a = spline_CT(C,u0)._2;
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HMM_Vec2 b = spline_CT(C,u1)._2;
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float ab = HMM_DistV2(a,b);
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float cdist = HMM_DistV2(a,m0) + HMM_DistV2(m0,m1) + HMM_DistV2(m1,m2) + HMM_DistV2(m2,b);
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if (cdist-ab > max_angle) {
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arr = spline2d_min_angle_2(u0,um1,max_angle,C,arr);
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arr = spline2d_min_angle_2(um1,u1,max_angle,C,arr);
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} else
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arrput(arr,b);
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return arr;
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}
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//SPLINE_MIN(2)
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SPLINE_MIN(3)
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/* Computes non even points to give the best looking curve for a given catmull a,b,c,d */
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HMM_Vec2 *catmull_rom_min_angle(HMM_Vec2 *a, HMM_Vec2 *b, HMM_Vec2 *c, HMM_Vec2 *d, float min_angle, HMM_Vec2 *arr)
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HMM_Vec2 *spline_min_angle(HMM_Vec2 *p, HMM_Mat4 *B, float min_angle, HMM_Vec2 *arr)
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{
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HMM_Mat4 C = catmull_C(*a,*b,*c,*d);
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arr = spline2d_min_angle_2(0,1,min_angle*M_PI/180.0,&C, arr);
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HMM_Mat4 C = make_C(p, B);
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arr = spline2d_min_angle_2(0,1,min_angle, &C, arr);
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return arr;
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}
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#define CR_MA(DIM) \
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HMM_Vec##DIM *catmull_rom_ma_v##DIM(HMM_Vec##DIM *cp, float ma) \
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{ \
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if (arrlen(cp) < 4) return NULL; \
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\
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if (V##DIM##RET) arrfree(V##DIM##RET);\
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arrsetcap(V##DIM##RET,100);\
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int segments = arrlen(cp)-3;\
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arrput(V##DIM##RET, cp[1]); \
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for (int i = 1; i < arrlen(cp)-2; i++) { \
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HMM_Vec##DIM p0 = HMM_MulV##DIM##F(HMM_SubV##DIM(cp[i+1], cp[i-1]), CAT_S);\
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HMM_Vec##DIM p3 = HMM_MulV##DIM##F(HMM_SubV##DIM(cp[i+2], cp[i]), CAT_S);\
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catmull_rom_min_angle(&p0, &cp[i], &cp[i+1], &p3, ma);\
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}\
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\
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return arrdup(V##DIM##RET);\
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}\
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//CR_MA(2)
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HMM_Vec2 *catmull_rom_ma_v2(HMM_Vec2 *cp, float ma)
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{
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if (arrlen(cp) < 4) return NULL;
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@ -298,14 +231,24 @@ HMM_Vec2 *catmull_rom_ma_v2(HMM_Vec2 *cp, float ma)
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int segments = arrlen(cp)-3;
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arrsetcap(ret,segments*(ma>=2 ? 3 : 7));
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arrput(ret, cp[1]);
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for (int i = 1; i < arrlen(cp)-2; i++)
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ret = catmull_rom_min_angle(&cp[i-1], &cp[i], &cp[i+1], &cp[i+2], ma, ret);
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for (int i = 0; i < arrlen(cp)-3; i++)
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ret = spline_min_angle(&cp[i], &catmull_rom_m, ma, ret);
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return ret;
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}
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//CR_MA(3)
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//CR_MA(4)
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HMM_Vec2 *bezier_cb_ma_v2(HMM_Vec2 *cp, float ma)
|
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{
|
||||
if (arrlen(cp) < 4) return NULL;
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HMM_Vec2 *ret = NULL;
|
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int segments = arrlen(cp)-3;
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arrsetcap(ret,segments*(ma>=2?3:7));
|
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arrput(ret,cp[0]);
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for (int i = 0; i < arrlen(cp)-3; i+=3)
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ret = spline_min_angle(&cp[i], &bezier_m, ma, ret);
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||||
|
||||
return ret;
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}
|
||||
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HMM_Vec2 catmull_rom_query(HMM_Vec2 *cp, float d, HMM_Mat4 *G)
|
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{
|
||||
|
|
@ -320,13 +263,11 @@ HMM_Vec2 catmull_rom_query(HMM_Vec2 *cp, float d, HMM_Mat4 *G)
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p1++;
|
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}
|
||||
|
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HMM_Vec2 p0 = HMM_MulV2F(HMM_SubV2(cp[p1+1], cp[p1-1]), CAT_S);
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HMM_Vec2 p3 = HMM_MulV2F(HMM_SubV2(cp[p1+2], cp[p1]), CAT_S);
|
||||
|
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return cubic_spline_d(p0, cp[p1], cp[p1+1], p3, G, d);
|
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return cp[0];
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// return cubic_spline_d(p0, cp[p1], cp[p1+1], p3, G, d);
|
||||
}
|
||||
|
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float catmull_rom_seglen(float t0, float t1, float max_angle, HMM_Mat4 *Cd, HMM_Mat4 *C)
|
||||
float spline_seglen(float t0, float t1, float max_angle, HMM_Mat4 *Cd, HMM_Mat4 *C)
|
||||
{
|
||||
float total = 0;
|
||||
float step = 0.1;
|
||||
|
|
@ -343,8 +284,8 @@ float catmull_rom_seglen(float t0, float t1, float max_angle, HMM_Mat4 *Cd, HMM_
|
|||
HMM_Vec2 m = spline_CT(C, tmid).xy;
|
||||
|
||||
if (HMM_AngleV2(m,b) > max_angle) {
|
||||
total += catmull_rom_seglen(t0, tmid, max_angle, Cd, C);
|
||||
total += catmull_rom_seglen(tmid, t1, max_angle, Cd, C);
|
||||
total += spline_seglen(t0, tmid, max_angle, Cd, C);
|
||||
total += spline_seglen(tmid, t1, max_angle, Cd, C);
|
||||
} else
|
||||
return HMM_LenV2(spline_CT(Cd, t0).xy)*(t1-t0);
|
||||
|
||||
|
|
@ -358,12 +299,10 @@ float catmull_rom_len(HMM_Vec2 *cp)
|
|||
int segs = arrlen(cp)-3;
|
||||
float d_per_seg = (float)1/segs;
|
||||
float maxi = d_per_seg;
|
||||
for (int i = 1; i < arrlen(cp)-2; i++) {
|
||||
HMM_Vec2 p0 = HMM_MulV2F(HMM_SubV2(cp[i+1], cp[i-1]), CAT_S);
|
||||
HMM_Vec2 p3 = HMM_MulV2F(HMM_SubV2(cp[i+2], cp[i]), CAT_S);
|
||||
HMM_Mat4 C = make_C(p0, cp[i], cp[i+1], p3, &catmull_rom_m);
|
||||
HMM_Mat4 Cd = make_C(p0, cp[i], cp[i+1], p3, &catmull_rom_dm);
|
||||
len += catmull_rom_seglen(0, 1, 0.1, &Cd, &C);
|
||||
for (int i = 0; i < arrlen(cp)-3; i++) {
|
||||
HMM_Mat4 C = make_C(&cp[i], &catmull_rom_m);
|
||||
HMM_Mat4 Cd = make_C(&cp[i], &catmull_rom_dm);
|
||||
len += spline_seglen(0, 1, 0.1, &Cd, &C);
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,7 +7,8 @@ HMM_Vec2 *catmull_rom_ma_v2(HMM_Vec2 *cp, float ma);
|
|||
HMM_Vec3 *catmull_rom_ma_v3(HMM_Vec3 *cp, float ma);
|
||||
HMM_Vec4 *catmull_rom_ma_v4(HMM_Vec4 *cp, float ma);
|
||||
|
||||
HMM_Vec2 catmull_rom_query(HMM_Vec2 *cp, float d, HMM_Mat4 *G);
|
||||
HMM_Vec2 *bezier_cb_ma_v2(HMM_Vec2 *cp, float ma);
|
||||
HMM_Vec2 spline_query(HMM_Vec2 *cp, float d, HMM_Mat4 *basis);
|
||||
|
||||
HMM_Vec2 catmull_rom_pos(HMM_Vec2 *cp, float d);
|
||||
HMM_Vec2 catmull_rom_tan(HMM_Vec2 *cp, float d);
|
||||
|
|
|
|||
Loading…
Reference in a new issue