Revision control
Copy as Markdown
{
"QEN": {
"description": "SpriteAnimation node for animating sprite sequences.",
"fragmentCode": [
"@main",
"{",
" vec4 sprite = vec4(0.0);",
"#if (SPRITE_ANIMATION_INTERPOLATE == 1)",
" vec2 spriteUV;",
" spriteUV.x = spriteArea.x + texCoord.x * spriteArea.z;",
" spriteUV.y = spriteArea.y + texCoord.y * spriteArea.w;",
" vec4 sprite1 = texture(spriteAnimationImage, spriteUV);",
"",
" vec2 spriteUV2;",
" spriteUV2.x = spriteArea2.x + texCoord.x * spriteArea2.z;",
" spriteUV2.y = spriteArea2.y + texCoord.y * spriteArea2.w;",
" vec4 sprite2 = texture(spriteAnimationImage, spriteUV2);",
"",
" float anim = clamp(mod(iTime * (1.0 / spriteAnimationFrameDuration), 1.0), 0.0, 1.0);",
" sprite = mix(sprite1, sprite2, anim);",
"#else",
" vec2 spriteUV;",
" spriteUV.x = spriteArea.x + texCoord.x * spriteArea.z;",
" spriteUV.y = spriteArea.y + texCoord.y * spriteArea.w;",
" sprite = texture(spriteAnimationImage, spriteUV);",
"#endif",
" fragColor = mix(fragColor, sprite, sprite.a);",
"}"
],
"name": "SpriteAnimation",
"properties": [
{
"defaultValue": "0",
"description": "If 1, interpolation will occur between sprite frames to make the animation appear smoother. Interpolation requires 2 texture lookups.",
"name": "SPRITE_ANIMATION_INTERPOLATE",
"type": "define"
},
{
"defaultValue": "../images/qt-logo-sheet.png",
"description": "Sprite sheet Image.",
"name": "spriteAnimationImage",
"type": "image"
},
{
"defaultValue": "4",
"description": "The amount of rows in the sprite image.",
"maxValue": "8",
"minValue": "1",
"name": "spriteAnimationRows",
"type": "int"
},
{
"defaultValue": "4",
"description": "The amount of columns in the sprite image.",
"maxValue": "16",
"minValue": "1",
"name": "spriteAnimationColumns",
"type": "int"
},
{
"defaultValue": "16",
"description": "Total amount of frames in the image sequence. This is often rows * columns, but can be also smaller if grid is not full of images or only want to animate part of the sprite images.",
"maxValue": "64",
"minValue": "1",
"name": "spriteAnimationFrameCount",
"type": "int"
},
{
"defaultValue": "0.1",
"description": "How long a single frame is shown in seconds.",
"maxValue": "1",
"minValue": "0.01",
"name": "spriteAnimationFrameDuration",
"type": "float"
}
],
"version": 1,
"vertexCode": [
"out vec4 spriteArea;",
"#if (SPRITE_ANIMATION_INTERPOLATE == 1)",
"out vec4 spriteArea2;",
"#endif",
"@main",
"{",
" float columnSize = 1.0 / spriteAnimationColumns;",
" float rowSize = 1.0 / spriteAnimationRows; ",
" float frameIndexF = mod(iTime / spriteAnimationFrameDuration, spriteAnimationFrameCount);",
" ",
" float frameIndex = floor(frameIndexF);",
" float frameColumn = mod(frameIndex, spriteAnimationColumns);",
" float frameRow = floor(float(frameIndex) / spriteAnimationColumns);",
" spriteArea = vec4(frameColumn * columnSize,",
" frameRow * rowSize,",
" columnSize,",
" rowSize);",
"#if (SPRITE_ANIMATION_INTERPOLATE == 1)",
" float frameIndex2 = mod(ceil(frameIndexF), spriteAnimationFrameCount);",
" float frameColumn2 = mod(frameIndex2, spriteAnimationColumns);",
" float frameRow2 = floor(float(frameIndex2) / spriteAnimationColumns);",
" spriteArea2 = vec4(frameColumn2 * columnSize,",
" frameRow2 * rowSize,",
" columnSize,",
" rowSize);",
"#endif",
"}"
]
}
}