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Just another update

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Ingy döt Net 2015-02-20 00:35:01 -05:00
parent a25938f123
commit 00a190b0a6
6591 changed files with 94363 additions and 23227 deletions
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31
Task/Draw-a-sphere/D/draw-a-sphere.d
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@ -1,39 +1,40 @@
import std.stdio, std.math, std.algorithm, std.numeric;
alias double[3] V3;
V3 light = [30, 30, -50];
alias V3 = double[3];
immutable light = normalize([30.0, 30.0, -50.0]);
void normalize(ref V3 v) pure {
V3 normalize(V3 v) pure @nogc {
v[] /= dotProduct(v, v) ^^ 0.5;
return v;
}
double dot(in ref V3 x, in ref V3 y) pure nothrow {
double dot(in ref V3 x, in ref V3 y) pure nothrow @nogc {
immutable double d = dotProduct(x, y);
return d < 0 ? -d : 0;
}
void drawSphere(in double R, in double k, in double ambient) {
void drawSphere(in double R, in double k, in double ambient) @nogc {
enum shades = ".:!*oe&#%@";
foreach (int i; cast(int)floor(-R) .. cast(int)ceil(R) + 1) {
foreach (immutable i; cast(int)floor(-R) .. cast(int)ceil(R) + 1) {
immutable double x = i + 0.5;
foreach (int j; cast(int)floor(-2*R)..cast(int)ceil(2*R)+1){
foreach (immutable j; cast(int)floor(-2 * R) ..
cast(int)ceil(2 * R) + 1) {
immutable double y = j / 2. + 0.5;
if (x ^^ 2 + y ^^ 2 <= R ^^ 2) {
V3 vec = [x, y, (R^^2 - x^^2 - y^^2) ^^ 0.5];
vec.normalize();
immutable vec = [x, y, (R^^2 - x^^2 - y^^2) ^^ 0.5]
.normalize;
immutable double b = dot(light, vec) ^^ k + ambient;
int intensity = cast(int)((1-b) * (shades.length-1));
intensity = min(shades.length-1, max(intensity, 0));
putchar(shades[intensity]);
int intensity = cast(int)((1 - b) * (shades.length-1));
intensity = min(shades.length - 1, max(intensity, 0));
shades[intensity].putchar;
} else
putchar(' ');
' '.putchar;
}
putchar('\n');
'\n'.putchar;
}
}
void main() {
light.normalize();
drawSphere(20, 4, 0.1);
drawSphere(10, 2, 0.4);
}