抖音最近爆火的玫瑰花示例代码
+===***************==++- ;==*=============================++ ;=========================================+ +===============================================+: =====================================================+ :=========================================================+: ==***************=*=+============================================+, ********==================***###***++++++====*****###*=================+ ****====================*#****************#=******************#*============; =**=====================******************@#####@@+******************#=:========+ **=====================**======#*******************;=#*====***************=+======+ **===============++++++=#======*====*************#***###*##========***********=++++==+ **===========++++++++++*=======#========*******=************#:***=======********=++++++; **=======+++++++++++++#+++++++++*++++===========*************@*===******=====******+-++++; =*====++++++++++++++++#+++++++++@*+++++==============**********=*======***#=======***;=====++ **=++++++++++++=+++++@++++++++++++*++++++===============*==*=====*========*#+===================+ *=+++++++==++++++++;;@+++++++++=++#++++++;++===================+===*========@========*============== **++++++*++++++++;;;;;#++;;;;;;;*;;=#;;;++++++++++============================#+========++===========*=; **++++**++++++;;;;;;;;@;;;;#;;;;*;;;=+;;;;+++++++++++++=========++==@+++======#+++=====*=+++=============; =*+++**+++++;;;;;;;;;;@;;;;;#;;;*;;;=#;;;;;++++++++++++++++++++#+++#=++++++===#++++++==*=+++++===========*= =*++;*=++++;;;;;;;;:::**;;;;=@*;=;;;==#;;;;;:;;;;;;+++++++++++++++**++++++++==#++++++++==++++++=============; *=;=#++++;;;;;;;:::::=#;;;::==@+:::+==*#@@@@@@@@@#=;;;+++++++*;+#==;;+++++++#*+++=++++*+++++++++============+ +;;;;**;;#=++;;;;;;;::::::=*#;::::===@::=====***=============;;;;;=;@+;+;;;;+++++#;+++++=++=+;++++++++==========*= +;;;;;;;::*+;##++;;;;;;::::::-+:#;::::+====@======================+;;=;#+;;;;;;;;+++#*;;+++++=+=;;;++++++++============ +++;;;;;;;;::**;=#*+;;;;;:::::---;--#:::-++=====@+=================+++;;#++;;;:==;;;;+=*;;;+++++*==;;;;++++++++=========*=; +++++;;;;;;;::::=+:##=;;;;;::::-=::----*:---+++=====#==============++++++#+;;*#*+;;;;;;+*;;;;+++++*=;;;;;;++++++++=========== +=++++;;;;;;;:::::==::*#*;;;;::::-==::---==---;++++=====#=========+++++++*+#@#++++;;:;;;;*::;;;++++=*+:;;;;;;++++++++========*= ==+++++;;;;;;;:::::-==:::##;;;:::--- **-,--*;--;;++++++====*++++++++++*@@@=++++++;;;:::;+*:::;;;++++**:::;;;;;;++++++++=======*= ==++++++;;;;;;:::::---==:--##+;;::---,,+##*-;=---;;+++++++++===++##@@*++++++++++;;;;::::*=-:::;;++++#*;::::;;;;;++++++++======**= ==++++++;;;;;;;:::::---;=;---,##;;::--,,,;++###=--;;;++++++**#*=+++++++++++++++;;;;;::-:*+---:;;;++*#*+-::::;;;;;;++++++++=====** ==++++++++;;;;;;:::::----++---,,*##;::-,,,:;+++++#@@#*;+=++++++++++++++++++++;;;;;;:::--=----:;;+++##+;---:::;;;;;;++++++++====**= ==++++++++;;;;;;:::::---,,++--,,,,=##;-,,,,:;;;+++++++=@@@@#=+++++++++++++;;;;;;;;:::-+=:----;;++##:+;----::::;;;;;++++++++===***++; =*=++++++++;;;;;;;::::---,,,;+-,,,,,,,##;,,,::;;;;+++++++++++++=####***=+;;;;;;;;::::-++:----;+*##--;;,,---::::;;;;;++++++++===**+++++; =*=+++++++++;;;;;;:::::---,,,;;,,,,,,,,:***,,::;;;;;;++++++++++++++++++++++==++;:::--+;:,--;=###---::,,,,--::::;;;;;++++++++=***;+++++++ =**+++++++++;;;;;;;::::---,,,::,,,,,,,,,:;=**,:::;;;;;;;;;+++++++++++++++++;;;;;;;-,;::- *### ,,,--:,:;,---:::;;;;;;++++++++**=;;++++++++ =**=+++++++++;;;;;;:::::---,,,:-,;-,,,,,::;;;=*=:::;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:;:=###=:- ,,,,,--:;;;--::::;;;;;+++++++=**+;;;+++++++++ ***++++++++++;;;;;;:::::--,,,,--+;-,,,,,::;;;;+==+::;;;;;;;;;;;;;;;;;;;;;;;;;;;;*##*;::::-,,,,,-,:;++;,--:::;;;;;;++++++***;;;;;++++++++++ =***++++++++++;;;;;;;::::--,,,,,+++:: ...:::;;;;;==+::::;;;;;;;;;;;;;;;;;;=****=;;:::::--,,,,,,:;;=+;,--::::;;;;;+++++***+;;;;;++++++++++++ ****=+++++++++;;;;;;;::::--,,,,,,==+:: ...:::;;;;;+++::::::::;;;;;;======;;;;:::::::---,,,,:;;;==+,,--::::;;;;;++++***+;;;;;;;++++++++++=+; ****=++++++++++;;;;;;:::::--,,,,,+===;;: .-:::;;;;;+;;-:::::;++++;;;;;;::::::::::---..,;;;+===+,,,--::::;;;;;++=**=::;;;;;;;++++++++++++++ =***=++++++++++;;;;;;;::::--,,,,,,-=**=;;;: ::::;;;;;:---;;;::::::::::::::::::--- ;;;++=**=-,,,,--:::;;;;;;=*==;:::;;;;;;;;++++++++++++=+; ****=++++++++++;;;;;;;::::--,,,,,,-:****=;;;;;:::;;: -;::::::::::::::::--;;;;+++****=:-,,,,,-::::;;;;=====-::::;;;;;;;;++++++++++++===+ *#**=++++++++++;;;;;;;:::::-,,,,,.-::=******+;;;;;;;;;;;;;;;;;;;;;;;+++++**#****::--,,,,,-::::;;;====+--:::::;;;;;;;;+++++++++++++===+ ####*++++++++++;;;;;;;;::::- ,,,..--::::=*########***==+++==***#########*::::---,,,,,-::::;====+,,,--:::::;;;;;;;;+++++++++++++====+ *####*++++++++++;;;;;;;;::::- ,.....--:::::::::**###########**=::::::::---.,,,,,,-::+====+,,,,,---:::::;;;;;;;;+++++++++++++=====+ *####*++++++++++;;;;;;;;:::::-.......----::::::::::::::::::::------....,,,,-:+++++;,,,,,,,---:::::;;;;;;;;;+++++++++++++======+ =#####*=++++++++;;;;;;;;;;:::::.........-----------------,........,,,;;+++;-,,,,,,,,,---:::::;;;;;;;;;++++++++++++++=======+ =*#####**+++++++;;;;;;;;;;;::::::...........................,:;;;;---,,,,,,,,,,--::::::;;;;;;;;;;++++++++++++++========; =*#********==+++;;;;;;;;;;;;;;:::::::::::......:::::.,-:::----..,,,,,,,---::::::;;;;;;;;;;+++++++++++++++========+ =*******************===========+++++++;;;;:::,----....,,,,,,---:::::::;;;;;;;;;;+++++++++++++++========== , ++==++++::::::::::::::::::::::......,,,,,,---:::::::;;;;;;;;;;;++++++++++++++++==========+ ::;--- .................-----:::::::::::::--....,,,,----::::::::;;;;;;;;;;;;+++++++++++++++++==========+ -;;;------,................................,,-----:::::::::;;;;;;;;;;;;;++++++++++++++++++===========+ ;;;+:::::----------..............--------::::::::::::;;;;;;;;;;;;;;+++++++++++++++++++============= ;+++;:::::::::::::::::::::::::::::::::::::::::;;;;;;;;;;;;;;;;++++++++++++++++++++==========*==+ ;++++:::::::::::::::::::::::::::::::;;;;;;;;;;;;;;;;;;;;;+++++++++++++++++++++==========**== ;++++;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;++++++++++++++++++++++==========***==; ;++==+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;+++++++++++++++++++++++++==========****=; ;+====;;;;;;;;;;;;;;;;;;;;;;;;;;;+++++++++++++++++++++++++++++==========*****=+ +=====+;;;;;;;;;;;;++++++++++++++++++++++++++++++++++++==========******= +=======+++++++++++++++++++++++++++++++++++++++++=========******== ++========++++++++++++++++++++++++++++++=========********=; +======****====++++++++++++++++=====*************: ++====******************************==+ =======******=====++
import static java.lang.Math.*;public class DrawWindRoseChartImpl {static final int max_iterations = 128;static final float stop_threshold = 0.01f;static final float grad_step = 0.01f;static final float clip_far = 10.0f;static final float PI = 3.14159265359f;static final float PI2 = 6.28318530718f;static final float DEG_TO_RAD = PI / 180.0f;static class Vec2 {float x, y;Vec2(float x, float y) {this.x = x;this.y = y;}}static class Vec3 {float x, y, z;Vec3(float x, float y, float z) {this.x = x;this.y = y;this.z = z;}}static class Mat3 {float[] m = new float[9];Mat3(float[] m) {this.m = m;}}static final Vec3 light_pos = new Vec3(20.0f, 50.0f, 20.0f);static float min(float a, float b) {return a < b ? a : b;}static float max(float a, float b) {return a > b ? a : b;}static float clamp(float f, float a, float b) {return max(min(f, b), a);}static Vec2 make2(float x, float y) {return new Vec2(x, y);}static Vec2 add2(Vec2 a, Vec2 b) {return new Vec2(a.x + b.x, a.y + b.y);}static Vec2 sub2(Vec2 a, Vec2 b) {return new Vec2(a.x - b.x, a.y - b.y);}static float dot2(Vec2 a, Vec2 b) {return a.x * b.x + a.y * b.y;}static float length2(Vec2 v) {return (float) sqrt(dot2(v, v));}static Vec3 make3(float x, float y, float z) {return new Vec3(x, y, z);}static Vec3 add3(Vec3 a, Vec3 b) {return new Vec3(a.x + b.x, a.y + b.y, a.z + b.z);}static Vec3 sub3(Vec3 a, Vec3 b) {return new Vec3(a.x - b.x, a.y - b.y, a.z - b.z);}static Vec3 mul3(Vec3 a, Vec3 b) {return new Vec3(a.x * b.x, a.y * b.y, a.z * b.z);}static Vec3 scale3(Vec3 v, float s) {return new Vec3(v.x * s, v.y * s, v.z * s);}static float dot3(Vec3 a, Vec3 b) {return a.x * b.x + a.y * b.y + a.z * b.z;}static float length3(Vec3 v) {return (float) sqrt(dot3(v, v));}static Vec3 normalize3(Vec3 v) {return scale3(v, 1.0f / length3(v));}static Vec3 mul(Mat3 m, Vec3 v) {return make3(m.m[0] * v.x + m.m[3] * v.y + m.m[6] * v.z,m.m[1] * v.x + m.m[4] * v.y + m.m[7] * v.z,m.m[2] * v.x + m.m[5] * v.y + m.m[8] * v.z);}static Mat3 rotationXY(float x, float y) {Vec2 c = new Vec2((float)cos( x), (float)cos(y));Vec2 s = new Vec2((float)sin(x), (float)sin(y));float[] m = {c.y, 0.0f, -s.y,s.y * s.x, c.x, c.y * s.x,s.y * c.x, -s.x, c.y * c.x};return new Mat3(m);}static float opI(float d1, float d2) {return max(d1, d2);}static float opU(float d1, float d2) {return min(d1, d2);}static float opS(float d1, float d2) {return max(-d1, d2);}static float sdPetal(Vec3 p, float s) {p = add3(mul3(p, make3(0.8f, 1.5f, 0.8f)), make3(0.1f, 0.0f, 0.0f));Vec2 q = make2(length2(make2(p.x, p.z)), p.y);float lower = length2(q) - 1.0f;lower = opS(length2(q) - 0.97f, lower);lower = opI(lower, q.y);float upper = length2(sub2(q, make2(s, 0.0f))) + 1.0f - s;upper = opS(upper, length2(sub2(q, make2(s, 0.0f))) + 0.97f - s);upper = opI(upper, -q.y);upper = opI(upper, q.x - 2.0f);float region = length3(sub3(p, make3(1.0f, 0.0f, 0.0f))) - 1.0f;return opI(opU(upper, lower), region);}static float map(Vec3 p) {float d = 1000.0f, s = 2.0f;Mat3 r = rotationXY(0.1f, PI2 * 0.618034f);r.m[0] *= 1.08f;r.m[1] *= 1.08f;r.m[2] *= 1.08f;r.m[3] *= 0.995f;r.m[4] *= 0.995f;r.m[5] *= 0.995f;r.m[6] *= 1.08f;r.m[7] *= 1.08f;r.m[8] *= 1.08f;for (int i = 0; i < 21; i++) {d = opU(d, sdPetal(p, s));p = mul(r, p);p = add3(p, make3(0.0f, -0.02f, 0.0f));s *= 1.05f;}return d;}static Vec3 gradient(Vec3 pos) {Vec3 dx = new Vec3(grad_step, 0.0f, 0.0f);Vec3 dy = new Vec3(0.0f, grad_step, 0.0f);Vec3 dz = new Vec3(0.0f, 0.0f, grad_step);return normalize3(make3(map(add3(pos, dx)) - map(sub3(pos, dx)),map(add3(pos, dy)) - map(sub3(pos, dy)),map(add3(pos, dz)) - map(sub3(pos, dz))));}static float ray_marching(Vec3 origin, Vec3 dir, float start, float end) {float depth = start;for (int i = 0; i < max_iterations; i++) {float dist = map(add3(origin, scale3(dir, depth)));if (dist < stop_threshold)return depth;depth += dist * 0.3;if (depth >= end)return end;}return end;}static float shading(Vec3 v, Vec3 n, Vec3 eye) {Vec3 ev = normalize3(sub3(v, eye));Vec3 vl = normalize3(sub3(light_pos, v));float diffuse = dot3(vl, n) * 0.5f + 0.5f;Vec3 h = normalize3(sub3(vl, ev));float rim = (float) (pow(1.0f - max(-dot3(n, ev), 0.0f), 2.0f) * 0.15f);float ao = clamp(v.y * 0.5f + 0.5f, 0.0f, 1.0f);return (diffuse + rim) * ao;}static Vec3 ray_dir(float fov, Vec2 pos) {Vec3 r = new Vec3(pos.x, pos.y, -(float)tan((90.0f - fov * 0.5f) * DEG_TO_RAD));return normalize3(r);}static float f(Vec2 fragCoord) {Vec3 dir = ray_dir(45.0f, fragCoord);Vec3 eye = new Vec3(0.0f, 0.0f, 4.5f);Mat3 rot = rotationXY(-1.0f, 1.0f);dir = mul(rot, dir);eye = mul(rot, eye);float depth = ray_marching(eye, dir, 0.0f, clip_far);Vec3 pos = add3(eye, scale3(dir, depth));if (depth >= clip_far)return 0.0f;elsereturn shading(pos, gradient(pos), eye);}public static void main(String[] args) {System.out.println("\033[91m");for (int y = 0; y < 80; y++) {for (int x = 0; x < 160; x++)System.out.print(" .,-:;+=*#@".charAt((int) (f(make2((x / 160.0f - 0.5f) * 2.0f, (y / 80.0f - 0.5f) * -2.0f)) * 12.0f)));System.out.println();}}
}