Riccardo Giorato
104 lines
4.9 KiB
TypeScript
104 lines
4.9 KiB
TypeScript
import { COMIC_STYLES } from "./constants";
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export function buildComicPrompt({
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prompt,
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style,
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characterImages = [],
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isContinuation = false,
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previousContext = "",
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isAddPage = false,
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previousPages = [],
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}: {
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prompt: string;
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style?: string;
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characterImages?: string[];
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isContinuation?: boolean;
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previousContext?: string;
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isAddPage?: boolean;
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previousPages?: Array<{
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prompt: string;
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}>;
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}): string {
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const styleInfo = COMIC_STYLES.find((s) => s.id === style);
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const styleDesc = styleInfo?.prompt || COMIC_STYLES[2].prompt;
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let continuationContext = "";
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if (isContinuation && previousContext) {
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continuationContext = `\nCONTINUATION CONTEXT:\nThis is a continuation of an existing story. The previous page showed: ${previousContext}\nMaintain visual consistency with the previous panels. Continue the narrative naturally.\n`;
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}
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if (isAddPage && previousPages.length > 0) {
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const storyHistory = previousPages
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.map((page, index) => `Page ${index + 1}: ${page.prompt}`)
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.join("\n");
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continuationContext = `\nSTORY CONTINUATION CONTEXT:\nThis is a continuation of an existing comic story. Here are the previous pages:\n${storyHistory}\n\nThe new page should naturally continue this story. Maintain the same characters, setting, and narrative style. Reference previous events and build upon them.\n`;
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}
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let characterSection = "";
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if (characterImages.length > 0) {
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if (characterImages.length === 1) {
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characterSection = `
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CRITICAL FACE CONSISTENCY INSTRUCTIONS:
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- REFERENCE CHARACTER: Use the uploaded image as EXACT reference for the protagonist's face and appearance
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- FACE MATCHING: The character's face must be IDENTICAL to the reference image - same eyes, nose, mouth, hair, facial structure
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- APPEARANCE PRESERVATION: Maintain exact skin tone, hair color/style, eye color, and distinctive facial features
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- CHARACTER CONSISTENCY: This exact same character must appear in ALL 5 panels with the same face throughout
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- STYLE APPLICATION: Apply ${style} comic art style to the body/pose/action but KEEP THE FACE EXACTLY AS IN THE REFERENCE IMAGE
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- NO VARIATION: Do not alter, modify, or change the character's face in any way from the reference`;
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} else if (characterImages.length === 2) {
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characterSection = `
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CRITICAL DUAL CHARACTER FACE CONSISTENCY INSTRUCTIONS:
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- CHARACTER 1 REFERENCE: Use the FIRST uploaded image as EXACT reference for Character 1's face and appearance
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- CHARACTER 2 REFERENCE: Use the SECOND uploaded image as EXACT reference for Character 2's face and appearance
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- FACE MATCHING: Both characters' faces must be IDENTICAL to their respective reference images
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- VISUAL DISTINCTION: Keep both characters clearly visually distinct with their unique faces, hair, and features
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- CONSISTENT PRESENCE: Both characters must appear together in at least 4 of the 5 panels
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- STYLE APPLICATION: Apply ${style} comic art style while maintaining EXACT facial features from references
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- NO FACE VARIATION: Never alter or modify either character's face from their reference images`;
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}
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}
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const systemPrompt = `Professional comic book page illustration.
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${continuationContext}
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${characterSection}
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CHARACTER CONSISTENCY RULES (HIGHEST PRIORITY):
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- If reference images are provided, the characters' FACES must be 100% identical to the reference images
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- Never change hair color, eye color, facial structure, or distinctive features
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- Apply comic style to body/pose/action but preserve exact facial appearance
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- Same character must look identical across all panels they appear in
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TEXT AND LETTERING (CRITICAL - MINIMAL TEXT POLICY):
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- Keep text to an ABSOLUTE MINIMUM - comic panels should be primarily visual storytelling
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- Maximum 1-2 speech bubbles per panel, often zero is better
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- If text appears, use only 3-5 words maximum per bubble
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- Prefer silent panels with expressive artwork over dialogue
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- Show don't tell - convey emotion through facial expressions and body language
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- All text must be PERFECTLY CLEAR, LEGIBLE, and correctly spelled
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- Use bold clean comic book lettering, large and easy to read
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- Speech bubbles: crisp white fill, solid black outline, pointed tail toward speaker
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- NO paragraphs, long dialogue, or excessive text in any panel
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- NO blurry, warped, or unreadable text
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PAGE LAYOUT:
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5-panel comic page arranged as:
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[Panel 1] [Panel 2] — top row, 2 equal panels
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[ Panel 3 ] — middle row, 1 large cinematic hero panel
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[Panel 4] [Panel 5] — bottom row, 2 equal panels
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- Solid black panel borders with clean white gutters between panels
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- Each panel clearly separated and distinct
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ART STYLE:
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${styleDesc}
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${characterSection}
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COMPOSITION:
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- Vary camera angles across panels: close-up, medium shot, wide establishing shot
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- Natural visual flow: left-to-right, top-to-bottom reading order
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- Dynamic character poses with clear expressive acting
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- Detailed backgrounds matching the scene and mood`;
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return `${systemPrompt}\n\nSTORY:\n${prompt}`;
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}
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