9hole

graham d clark, graham clark

[9hole @9hole_com]

@Jose_Molfino @s7tmbr @Kernel @iX @Xres @IY @YRES

[9hole @9hole_com]

yes
#bind layer src? val=0
#bind layer !&dst float4 write
#bind parm pos float val=1.0
#bind parm Time float

@KERNELRNEL
{
// Normalized coordinates
float2 p = (float2)(@ix / (float)@xres, @iy / (float)@yres);
p = p * 2.0f - 1.0f;
p.x *= (float)@xres / @yres; // Aspect ratio correction
p *= @pos;

// Initialize variables
float z = 0.0f;
float2 i = (float2)(0.0f, 0.0f);

// Calculate initial value similar to VEX
float dotVal = dot(p, p);
z += 4.0f - 4.0f * fabs(0.7f - dotVal);
float2 f = p * z;

// Initialize color accumulator with small non-zero values to avoid division issues
float4 color = (float4)(0.01f, 0.01f, 0.01f, 0.01f);

// Main loop exactly as in VEX
for (i.y = 1.0f; i.y <= 8.0f; i.y += 1.0f) { // Note: starting from 1.0 to avoid division by zero
// sin(f) + 1 swizzled as (x,y,y,x)
float4 sinTerm = (float4)(
sin(f.x) + 1.0f,
sin(f.y) + 1.0f,
sin(f.y) + 1.0f,
sin(f.x) + 1.0f
);

// Add to color exactly as in VEX
color += sinTerm * fabs(f.x - f.y);

// Update with swizzle(f,1,0) which is (f.y, f.x)
float2 s = (float2)(f.y, f.x);
f += cos(s * i.y + i + @Time) / i.y + 0.7f;
}

// Final color calculation
float4 result;

// Debug output - if we get nothing, at least show the intermediate color
if (length(https://t.co/2Iimib3nrs) < 0.01f) {
// Show some debug color if color accumulation failed
result = (float4)(1.0f, 0.0f, 0.0f, 1.0f);
} else {
// Normal calculation path
float4 pyVector = (float4)(-1.0f, 1.0f, 2.0f, 0.0f);
float4 expInput = (float4)(z - 4.0f) - p.y * pyVector;

// Clamp exp inputs to avoid overflow
expInput = clamp(expInput, -20.0f, 20.0f);

result.x = tanh(7.0f * exp(expInput.x) / color.x);
result.y = tanh(7.0f * exp(expInput.y) / color.y);
result.z = tanh(7.0f * exp(expInput.z) / color.z);
result.w = tanh(7.0f * exp(expInput.w) / color.w);
}

// Ensure we have some output
result = clamp(result, 0.0f, 1.0f);

@dst.set(result);
}

[9hole @9hole_com]

@Jose_Molfino @s7tmbr I'm not smart anymore, Claude helped.

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@Jose_Molfino @s7tmbr Cool image! Mine not exactly the same.

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vol to cop to vol https://t.co/XToXfcTJDU

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Saving time and frustration with parameter expressions in for loops and using Dictionary Attributes instead. An example illustrating this makes use of a table sent to Houdini from Touchdesigner to generate a pie chart (invented by Playfair). Also is an example base to potentially setup Touchdesinger to realtime assemble data and periodically send to Houdini for high end renders to post. #motiongraphics #motiondesign #houdini #vex #dictionaryattributes #sidefx #dataviz #datavisualization https://t.co/8GdzcXJLCD TUT and hip

[9hole @9hole_com]

https://t.co/2tG5qVIgWT Houdini 20.5 COPs 3D vector to UV stamp TUTorial. hip file #houdini #houdinifx #houdini205 #houdiniCOPs #houdinitutorial

[9hole @9hole_com]

a COP to match the Karma lens distort openCV, or just lens distort in COPs #houdini #houdinifx #houdini205 #houdiniCOPs #houdinitutorial #openCL #OCL #opencv hip and recipe for COP on youtube: https://t.co/2zZmfLAA97

[9hole @9hole_com]

Houdini 20.5 COPs RND paint strokes using built in COP nodes to DEV a way to make paint strokes from compositing nodes. working on another in OCL #houdini #houdinifx #houdini205 #houdiniCOPs https://t.co/9mQbMEMT9Z via @YouTube

[9hole @9hole_com]

RND Houdini 20.5 COPs 3D world space noise ramped for color, height, smoke source, and general pigburn over UV seams https://t.co/RbR0GWcrqV via @YouTube
#houdini #houdinifx #houdini205 #houdiniCOPs #houdinitutorial

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https://t.co/nm5qGC7gSe

[9hole @9hole_com]

switch stroke tool #houdini205 #houdiniCOPs love #proceduralism #3Dpaint
https://t.co/nm5qGC6J2G