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[orx-jumpflood] Add signedMagnitude mode to DirectionalField

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This commit is contained in:
Edwin Jakobs
2024-07-04 21:04:31 +02:00
parent 7eff583c35
commit aec57f7a44
4 changed files with 74 additions and 5 deletions
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18
orx-jumpflood/src/shaders/glsl/pixel-direction.frag
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@@ -1,4 +1,3 @@
/*
use #define OUTPUT_DISTANCE to output distance
use #define OUTPUT_DIRECTION to output direction
@@ -13,6 +12,7 @@ uniform bool normalizedDistance;
uniform bool unitDirection;
uniform bool flipV;
uniform bool outputIds;
uniform bool signedMagnitude;
in vec2 v_texCoord0;
out vec4 o_color;
@@ -23,7 +23,7 @@ void main() {
vec2 pixelPosition = v_texCoord0;
vec4 textureData = texture(tex0, v_texCoord0);
vec2 centroidPixelPosition = textureData.xy;
vec2 centroidPixelPosition = textureData.xy;
vec2 pixelDistance = (centroidPixelPosition - pixelPosition) * sizeDF;
@@ -32,8 +32,8 @@ void main() {
pixelDistance *= vec2(1.0, -1.0);
}
float length = length(pixelDistance);
if (unitDirection) {
float length = length(pixelDistance);
if (length >= 1E-6) {
pixelDistance /= length;
}
@@ -51,9 +51,17 @@ void main() {
}
#else
if (!normalizedDistance) {
o_color = vec4( vec2(length(pixelDistance * distanceScale)), outputData, 1.0);
o_color = vec4(vec2(length(pixelDistance * distanceScale)), outputData, 1.0);
} else if (!unitDirection) {
o_color = vec4( vec2(length(pixelDistance / originalSize)), outputData, 1.0);
o_color = vec4(vec2(length(pixelDistance / originalSize)), outputData, 1.0);
}
#endif
if (!outputIds) {
if (signedMagnitude) {
float s = -sign(o_color.b - 0.5);
o_color.rg *= s;
o_color.b = s * length;
}
}
}