minimalist architectural line art strict contour drawing clean continuous black lines on a solid pure white background no textures no shading no shadows no hatching no gradients empty interiors unfillled shapes preserve the exact layout shapes proportions and structural geometry of the original input image flat 2d vector graphic style schematic map trace simple minimalist outline only but do not focus on and do not contain textures shading shadows colors 3d render gradients realistic trees hatching filled interiors fine details noise materials concrete grass
