author | Wuzzy <almikes@aol.com> |
Thu, 24 Nov 2016 04:15:27 +0100 | |
changeset 12056 | b68ec446a111 |
parent 11532 | bf86c6cb9341 |
child 13928 | c36aaa30be98 |
permissions | -rw-r--r-- |
6490 | 1 |
unit uLandOutline; |
2 |
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3 |
interface |
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4 |
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5 |
uses uConsts, SDLh, uFloat; |
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6 |
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7 |
type TPixAr = record |
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8 |
Count: Longword; |
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9 |
ar: array[0..Pred(cMaxEdgePoints)] of TPoint; |
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10 |
end; |
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10189 | 12 |
procedure DrawEdge(var pa: TPixAr; value: Word); |
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procedure FillLand(x, y: LongInt; border, value: Word); |
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6490 | 14 |
procedure BezierizeEdge(var pa: TPixAr; Delta: hwFloat); |
15 |
procedure RandomizePoints(var pa: TPixAr); |
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17 |
implementation |
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18 |
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6491 | 19 |
uses uLandGraphics, uDebug, uVariables, uLandTemplates, uRandom, uUtils; |
6490 | 20 |
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21 |
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22 |
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23 |
var Stack: record |
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24 |
Count: Longword; |
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points: array[0..8192] of record |
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xl, xr, y, dir: LongInt; |
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27 |
end |
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28 |
end; |
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6490 | 31 |
procedure Push(_xl, _xr, _y, _dir: LongInt); |
32 |
begin |
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11532 | 33 |
if checkFails(Stack.Count <= 8192, 'FillLand: stack overflow', true) then exit; |
6490 | 34 |
_y:= _y + _dir; |
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if (_y < 0) or (_y >= LAND_HEIGHT) then |
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exit; |
6490 | 37 |
with Stack.points[Stack.Count] do |
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begin |
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xl:= _xl; |
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xr:= _xr; |
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y:= _y; |
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dir:= _dir |
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43 |
end; |
6490 | 44 |
inc(Stack.Count) |
45 |
end; |
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46 |
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47 |
procedure Pop(var _xl, _xr, _y, _dir: LongInt); |
|
48 |
begin |
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49 |
dec(Stack.Count); |
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50 |
with Stack.points[Stack.Count] do |
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51 |
begin |
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52 |
_xl:= xl; |
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_xr:= xr; |
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54 |
_y:= y; |
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_dir:= dir |
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56 |
end |
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57 |
end; |
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procedure FillLand(x, y: LongInt; border, value: Word); |
6490 | 60 |
var xl, xr, dir: LongInt; |
61 |
begin |
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62 |
Stack.Count:= 0; |
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63 |
xl:= x - 1; |
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64 |
xr:= x; |
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65 |
Push(xl, xr, y, -1); |
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66 |
Push(xl, xr, y, 1); |
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67 |
dir:= 0; |
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68 |
while Stack.Count > 0 do |
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69 |
begin |
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70 |
Pop(xl, xr, y, dir); |
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10189 | 71 |
while (xl > 0) and (Land[y, xl] <> border) and (Land[y, xl] <> value) do |
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72 |
dec(xl); |
10189 | 73 |
while (xr < LAND_WIDTH - 1) and (Land[y, xr] <> border) and (Land[y, xr] <> value) do |
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inc(xr); |
6490 | 75 |
while (xl < xr) do |
76 |
begin |
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10189 | 77 |
while (xl <= xr) and ((Land[y, xl] = border) or (Land[y, xl] = value)) do |
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inc(xl); |
6490 | 79 |
x:= xl; |
10189 | 80 |
while (xl <= xr) and (Land[y, xl] <> border) and (Land[y, xl] <> value) do |
6490 | 81 |
begin |
10189 | 82 |
Land[y, xl]:= value; |
6490 | 83 |
inc(xl) |
84 |
end; |
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if x < xl then |
|
86 |
begin |
|
87 |
Push(x, Pred(xl), y, dir); |
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88 |
Push(x, Pred(xl), y,-dir); |
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89 |
end; |
|
90 |
end; |
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91 |
end; |
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92 |
end; |
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10189 | 94 |
procedure DrawEdge(var pa: TPixAr; value: Word); |
6490 | 95 |
var i: LongInt; |
96 |
begin |
|
97 |
i:= 0; |
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98 |
with pa do |
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99 |
while i < LongInt(Count) - 1 do |
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8330 | 100 |
if (ar[i + 1].X = NTPX) then |
6490 | 101 |
inc(i, 2) |
8330 | 102 |
else |
6490 | 103 |
begin |
10189 | 104 |
DrawLine(ar[i].x, ar[i].y, ar[i + 1].x, ar[i + 1].y, value); |
6490 | 105 |
inc(i) |
106 |
end |
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107 |
end; |
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108 |
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109 |
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110 |
procedure Vector(p1, p2, p3: TPoint; var Vx, Vy: hwFloat); |
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var d1, d2, d: hwFloat; |
|
112 |
begin |
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113 |
Vx:= int2hwFloat(p1.X - p3.X); |
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Vy:= int2hwFloat(p1.Y - p3.Y); |
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115 |
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116 |
d2:= Distance(Vx, Vy); |
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117 |
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118 |
if d2.QWordValue = 0 then |
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119 |
begin |
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120 |
Vx:= _0; |
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Vy:= _0 |
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8330 | 122 |
end |
6490 | 123 |
else |
124 |
begin |
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10197 | 125 |
d:= DistanceI(p2.X - p1.X, p2.Y - p1.Y); |
126 |
d1:= DistanceI(p2.X - p3.X, p2.Y - p3.Y); |
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10510 | 127 |
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10197 | 128 |
if d1 < d then |
129 |
d:= d1; |
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130 |
if d2 < d then |
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131 |
d:= d2; |
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132 |
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133 |
d2:= d * _1div3 / d2; |
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10510 | 134 |
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6490 | 135 |
Vx:= Vx * d2; |
10197 | 136 |
Vy:= Vy * d2 |
6490 | 137 |
end |
138 |
end; |
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140 |
procedure AddLoopPoints(var pa, opa: TPixAr; StartI, EndI: LongInt; Delta: hwFloat); |
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141 |
var i, pi, ni: LongInt; |
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NVx, NVy, PVx, PVy: hwFloat; |
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x1, x2, y1, y2: LongInt; |
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tsq, tcb, t, r1, r2, r3, cx1, cx2, cy1, cy2: hwFloat; |
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X, Y: LongInt; |
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146 |
begin |
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if pa.Count < cMaxEdgePoints - 2 then |
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begin |
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pi:= EndI; |
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i:= StartI; |
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ni:= Succ(StartI); |
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{$HINTS OFF} |
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Vector(opa.ar[pi], opa.ar[i], opa.ar[ni], NVx, NVy); |
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{$HINTS ON} |
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repeat |
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i:= ni; |
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inc(pi); |
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if pi > EndI then |
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pi:= StartI; |
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inc(ni); |
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if ni > EndI then |
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ni:= StartI; |
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163 |
PVx:= NVx; |
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PVy:= NVy; |
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Vector(opa.ar[pi], opa.ar[i], opa.ar[ni], NVx, NVy); |
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166 |
|
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x1:= opa.ar[pi].x; |
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y1:= opa.ar[pi].y; |
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x2:= opa.ar[i].x; |
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y2:= opa.ar[i].y; |
6490 | 171 |
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cx1:= int2hwFloat(x1) - PVx; |
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cy1:= int2hwFloat(y1) - PVy; |
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174 |
cx2:= int2hwFloat(x2) + NVx; |
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175 |
cy2:= int2hwFloat(y2) + NVy; |
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t:= _0; |
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while (t.Round = 0) and (pa.Count < cMaxEdgePoints-2) do |
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begin |
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tsq:= t * t; |
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tcb:= tsq * t; |
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181 |
r1:= (_1 - t*3 + tsq*3 - tcb); |
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r2:= ( t*3 - tsq*6 + tcb*3); |
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183 |
r3:= ( tsq*3 - tcb*3); |
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184 |
X:= hwRound(r1 * x1 + r2 * cx1 + r3 * cx2 + tcb * x2); |
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Y:= hwRound(r1 * y1 + r2 * cy1 + r3 * cy2 + tcb * y2); |
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t:= t + Delta; |
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pa.ar[pa.Count].x:= X; |
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188 |
pa.ar[pa.Count].y:= Y; |
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189 |
inc(pa.Count); |
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190 |
//TryDo(pa.Count <= cMaxEdgePoints, 'Edge points overflow', true) |
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191 |
end; |
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192 |
until i = StartI; |
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lovelacer
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193 |
end; |
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194 |
|
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195 |
pa.ar[pa.Count].x:= opa.ar[StartI].X; |
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196 |
pa.ar[pa.Count].y:= opa.ar[StartI].Y; |
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197 |
inc(pa.Count) |
6490 | 198 |
end; |
199 |
||
200 |
procedure BezierizeEdge(var pa: TPixAr; Delta: hwFloat); |
|
201 |
var i, StartLoop: LongInt; |
|
202 |
opa: TPixAr; |
|
203 |
begin |
|
204 |
opa:= pa; |
|
205 |
pa.Count:= 0; |
|
206 |
i:= 0; |
|
207 |
StartLoop:= 0; |
|
10483 | 208 |
while (i < LongInt(opa.Count)) and (pa.Count < cMaxEdgePoints-1) do |
6490 | 209 |
if (opa.ar[i + 1].X = NTPX) then |
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lovelacer
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210 |
begin |
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211 |
AddLoopPoints(pa, opa, StartLoop, i, Delta); |
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lovelacer
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212 |
inc(i, 2); |
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lovelacer
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213 |
StartLoop:= i; |
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lovelacer
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214 |
pa.ar[pa.Count].X:= NTPX; |
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A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents:
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215 |
pa.ar[pa.Count].Y:= 0; |
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lovelacer
parents:
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216 |
inc(pa.Count); |
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lovelacer
parents:
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|
217 |
end else inc(i) |
6490 | 218 |
end; |
219 |
||
220 |
||
221 |
function CheckIntersect(V1, V2, V3, V4: TPoint): boolean; |
|
222 |
var c1, c2, dm: LongInt; |
|
223 |
begin |
|
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
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|
224 |
CheckIntersect:= false; |
6490 | 225 |
dm:= (V4.y - V3.y) * (V2.x - V1.x) - (V4.x - V3.x) * (V2.y - V1.y); |
226 |
c1:= (V4.x - V3.x) * (V1.y - V3.y) - (V4.y - V3.y) * (V1.x - V3.x); |
|
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A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
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|
227 |
if dm = 0 then |
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
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228 |
exit; |
6490 | 229 |
|
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
230 |
CheckIntersect:= true; |
6490 | 231 |
c2:= (V2.x - V3.x) * (V1.y - V3.y) - (V2.y - V3.y) * (V1.x - V3.x); |
232 |
if dm > 0 then |
|
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
233 |
begin |
6580
6155187bf599
A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents:
6491
diff
changeset
|
234 |
if (c1 < 0) or (c1 > dm) then |
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
235 |
CheckIntersect:= false |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
236 |
else if (c2 < 0) or (c2 > dm) then |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
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237 |
CheckIntersect:= false; |
8330 | 238 |
end |
6490 | 239 |
else |
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
240 |
begin |
6580
6155187bf599
A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents:
6491
diff
changeset
|
241 |
if (c1 > 0) or (c1 < dm) then |
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
242 |
CheckIntersect:= false |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
243 |
else if (c2 > 0) or (c2 < dm) then |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
244 |
CheckIntersect:= false; |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
245 |
end; |
6490 | 246 |
|
247 |
//AddFileLog('1 (' + inttostr(V1.x) + ',' + inttostr(V1.y) + ')x(' + inttostr(V2.x) + ',' + inttostr(V2.y) + ')'); |
|
248 |
//AddFileLog('2 (' + inttostr(V3.x) + ',' + inttostr(V3.y) + ')x(' + inttostr(V4.x) + ',' + inttostr(V4.y) + ')'); |
|
249 |
end; |
|
250 |
||
251 |
||
252 |
function CheckSelfIntersect(var pa: TPixAr; ind: Longword): boolean; |
|
253 |
var i: Longword; |
|
254 |
begin |
|
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
255 |
CheckSelfIntersect:= false; |
10560 | 256 |
if (ind <= 0) or (LongInt(ind) >= Pred(pa.Count)) then |
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
257 |
exit; |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
258 |
|
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
259 |
CheckSelfIntersect:= true; |
6490 | 260 |
for i:= 1 to pa.Count - 3 do |
261 |
if (i <= ind - 1) or (i >= ind + 2) then |
|
262 |
begin |
|
6990
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
263 |
if (i <> ind - 1) and CheckIntersect(pa.ar[ind], pa.ar[ind - 1], pa.ar[i], pa.ar[i - 1]) then |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
264 |
exit; |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
265 |
if (i <> ind + 2) and CheckIntersect(pa.ar[ind], pa.ar[ind + 1], pa.ar[i], pa.ar[i - 1]) then |
40e5af28d026
change every return value into a more pascal-ish form, using the name of the fucntion (helps the parser and macpas compaitilibity)
koda
parents:
6580
diff
changeset
|
266 |
exit; |
6490 | 267 |
end; |
268 |
CheckSelfIntersect:= false |
|
269 |
end; |
|
270 |
||
271 |
procedure RandomizePoints(var pa: TPixAr); |
|
272 |
const cEdge = 55; |
|
273 |
cMinDist = 8; |
|
274 |
var radz: array[0..Pred(cMaxEdgePoints)] of LongInt; |
|
275 |
i, k, dist, px, py: LongInt; |
|
276 |
begin |
|
277 |
for i:= 0 to Pred(pa.Count) do |
|
278 |
begin |
|
279 |
radz[i]:= 0; |
|
280 |
with pa.ar[i] do |
|
281 |
if x <> NTPX then |
|
282 |
begin |
|
283 |
radz[i]:= Min(Max(x - cEdge, 0), Max(LAND_WIDTH - cEdge - x, 0)); |
|
284 |
radz[i]:= Min(radz[i], Min(Max(y - cEdge, 0), Max(LAND_HEIGHT - cEdge - y, 0))); |
|
285 |
if radz[i] > 0 then |
|
286 |
for k:= 0 to Pred(i) do |
|
287 |
begin |
|
288 |
dist:= Max(abs(x - pa.ar[k].x), abs(y - pa.ar[k].y)); |
|
289 |
radz[k]:= Max(0, Min((dist - cMinDist) div 2, radz[k])); |
|
290 |
radz[i]:= Max(0, Min(dist - radz[k] - cMinDist, radz[i])) |
|
291 |
end |
|
292 |
end; |
|
293 |
end; |
|
294 |
||
295 |
for i:= 0 to Pred(pa.Count) do |
|
296 |
with pa.ar[i] do |
|
297 |
if ((x and LAND_WIDTH_MASK) = 0) and ((y and LAND_HEIGHT_MASK) = 0) then |
|
298 |
begin |
|
299 |
px:= x; |
|
300 |
py:= y; |
|
301 |
x:= x + LongInt(GetRandom(7) - 3) * (radz[i] * 5 div 7) div 3; |
|
302 |
y:= y + LongInt(GetRandom(7) - 3) * (radz[i] * 5 div 7) div 3; |
|
303 |
if CheckSelfIntersect(pa, i) then |
|
304 |
begin |
|
305 |
x:= px; |
|
306 |
y:= py |
|
307 |
end; |
|
308 |
end |
|
309 |
end; |
|
310 |
||
311 |
||
6580
6155187bf599
A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents:
6491
diff
changeset
|
312 |
end. |