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Dodanie palety kolorów.

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Jarosław Rulka
2026-01-24 19:47:27 +01:00
parent 3e40017904
commit 3026a1e5f0
1 changed files with 198 additions and 0 deletions
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src/main/java/pl/wat/ms4ds/terrain/AltitudeColorMapper.java Normal file
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package pl.wat.ms4ds.terrain;
import java.awt.Color;
import java.util.Arrays;
public class AltitudeColorMapper {
// Define the color stops and corresponding normalized values (0.0 to 1.0)
private static final float[] STOPS = {0.0f, 0.1f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0f};
private static final Color[] COLORS2 = {
new Color(0, 0, 64), // Dark Navy Blue
new Color(0, 64, 204), // Medium Blue
new Color(51, 204, 51), // Bright Green
new Color(255, 255, 128),// Yellow
new Color(228, 96, 0), // Orange
new Color(96, 0, 0), // Red
new Color(158, 110, 110),
new Color(220, 220, 220), // Red
Color.WHITE // White
};
private static final Color[] COLORS = {
new Color(40, 0, 40),
// new Color(20, 0, 60),
new Color(0, 0, 80), // DARK BLUE
// new Color(0, 0, 160),
// new Color(0, 0, 200),
new Color(0, 0, 255), // BLUE
// new Color(0, 80, 255),
// new Color(0, 160, 255),
// new Color(0, 200, 255),
new Color(0, 255, 255),
// new Color(0, 255, 200),
//
// new Color(0, 255, 160),
new Color(0, 255, 0), // GREEN
// new Color(80, 255, 0),
// new Color(80, 160, 20),
// new Color(120, 255, 0),
// new Color(200, 255, 0),
new Color(255, 255, 0), // YELLOW
// new Color(255, 200, 0),
// new Color(255, 120, 0),
// new Color(255, 60, 0),
new Color(255, 0, 0), // RED
// new Color(120, 0, 0),
new Color(40, 0, 0), // DARK RED
// new Color(80, 40, 40),
// new Color(120, 60, 60),
// new Color(160, 100, 100),
// new Color(200, 140, 140),
// new Color(220, 180, 180),
new Color(255, 215, 215),
Color.WHITE // White
};
/**
* RGB value representing the color in the default sRGB ColorModel.
* Bits 24-31 are alpha, 16-23 are red, 8-15 are green, 0-7 are blue.
* value = ((a & 0xFF) << 24) |
* ((r & 0xFF) << 16) |
* ((g & 0xFF) << 8) |
* ((b & 0xFF) << 0);
*/
private static final int[] COLORS_RGB = new int[7];
// static {
// Color c = new Color(0x37004E);
// int v = 0x37004E;
// int a = 0;
// int r = 0;
// int g = 0;
// int b = 50;
// int value = ((a & 0xFF) << 24) | ((r & 0xFF) << 16) | ((g & 0xFF) << 8) | ((b & 0xFF) << 0);
// COLORS_RGB[0] = value;
// a = 0;
// r = 0;
// g = 0;
// b = 0;
// value = ((a & 0xFF) << 24) | ((r & 0xFF) << 16) | ((g & 0xFF) << 8) | ((b & 0xFF) << 0);
// COLORS_RGB[0] = value;
// }
private static final Color[] gamaKolorow;
static {
Color[] gamaKolorowTemp = new Color[2000];
int i = 0;
int r = 40;
int g = 0;
int b = 40;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
for (int j = 0; j < 40; j++) {
// r: 40->0, g:0, b: 40->80
r--;
b++;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 175; j++) {
// r: 0, g:0, b: 80->255
b++;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 255; j++) {
// r: 0, g:1->255, b: 255
g++;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 255; j++) {
// r: 0, g:255, b: 254->0
b--;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 255; j++) {
// r: 1->255, g:255, b: 0
r++;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 255; j++) {
// r: 255, g:254->0, b: 0
g--;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 215; j++) {
// r: 254->40, g: 0, b: 0
r--;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
for (int j = 0; j < 215; j++) {
// r: 41->255, g: 0->215, b: 0->215
r++;
g++;
b++;
gamaKolorowTemp[i++] = new Color(r, g, b, 255);
}
gamaKolorow = Arrays.copyOf(gamaKolorowTemp, i);
}
/**
* Get the color corresponding to a given altitude value within a specified range.
*
* @param value The altitude value.
* @param minValue The minimum possible altitude.
* @param maxValue The maximum possible altitude.
* @return The interpolated color.
*/
public static Color getColorForAltitude(double value, double minValue, double maxValue) {
// Normalize the value to a 0.0 to 1.0 range
double normalizedValue = (value - minValue) / (maxValue - minValue);
if (normalizedValue <= 0.0) return COLORS[0];
if (normalizedValue >= 1.0) return COLORS[COLORS.length - 1];
// Find the correct interval in the color stops array
int stopIndex = 0;
while (stopIndex < STOPS.length - 1 && normalizedValue > STOPS[stopIndex + 1]) {
stopIndex++;
}
// Interpolate between the two nearest colors
float start = STOPS[stopIndex];
float end = STOPS[stopIndex + 1];
float range = end - start;
float fraction = (float) ((normalizedValue - start) / range);
Color c1 = COLORS[stopIndex];
Color c2 = COLORS[stopIndex + 1];
int r = (int) (c1.getRed() + (c2.getRed() - c1.getRed()) * fraction);
int g = (int) (c1.getGreen() + (c2.getGreen() - c1.getGreen()) * fraction);
int b = (int) (c1.getBlue() + (c2.getBlue() - c1.getBlue()) * fraction);
return new Color(r, g, b);
}
static void main() {
Color c = gamaKolorow[0];
}
}