Load animation data into model

model_format_glb.c

@@ -1146,13 +1146,67 @@ model_t model_format_glb_read(const char *path)
 	    (const u16_vec4_t *)(bin_data + info.bone_indices.offset),
 	    (const vec4_t *)(bin_data + info.weights.offset), info.vertex_count);
 	memcpy(model.indices, bin_data + info.indices.offset, info.indices.len);
-	model.inverse_bind_matrices = calloc(info.bone_count, sizeof(mat4_t));
+	model.inverse_bind_matrices = malloc(info.bone_count * sizeof(mat4_t));
 	assert(model.inverse_bind_matrices != nullptr);
 	memcpy(
 	    model.inverse_bind_matrices,
 	    bin_data + info.inverse_bind_matrices.offset,
 	    info.inverse_bind_matrices.len);
 
+	// Load animation data
+	model.animation.keyframe_count = info.animation.keyframe_count;
+	const size_t times_size = model.animation.keyframe_count * sizeof(float);
+	model.animation.times = malloc(times_size);
+	assert(model.animation.times != nullptr);
+	memcpy(
+	    model.animation.times, bin_data + info.animation.times[0].offset,
+	    times_size);
+	model.animation.length_us = (size_t)roundf(
+	    1'000'000
+	    * model.animation.times[model.animation.keyframe_count - 1]);
+	for (unsigned i = 1; i < info.bone_count; ++i) {
+		// Verify that all time series data matches
+		if (info.animation.times[i].offset
+		    != info.animation.times[0].offset) {
+			assert(
+			    memcmp(
+			        model.animation.times,
+			        bin_data + info.animation.times[i].offset, times_size)
+			    == 0);
+		}
+	}
+	model.animation.bones
+	    = malloc(model.bone_count * sizeof(animation_bone_t));
+	assert(model.animation.bones != nullptr);
+	for (unsigned i = 0; i < info.bone_count; ++i) {
+		// Load translations
+		model.animation.bones[i].translations
+		    = malloc(model.animation.keyframe_count * sizeof(vec3_t));
+		assert(model.animation.bones[i].translations != nullptr);
+		memcpy(
+		    model.animation.bones[i].translations,
+		    bin_data + info.animation.translations[i].offset,
+		    model.animation.keyframe_count * sizeof(vec3_t));
+
+		// Load rotations
+		model.animation.bones[i].rotations
+		    = malloc(model.animation.keyframe_count * sizeof(vec4_t));
+		assert(model.animation.bones[i].rotations != nullptr);
+		memcpy(
+		    model.animation.bones[i].rotations,
+		    bin_data + info.animation.rotations[i].offset,
+		    model.animation.keyframe_count * sizeof(vec4_t));
+
+		// Load scales
+		model.animation.bones[i].scales
+		    = malloc(model.animation.keyframe_count * sizeof(vec3_t));
+		assert(model.animation.bones[i].scales != nullptr);
+		memcpy(
+		    model.animation.bones[i].scales,
+		    bin_data + info.animation.scales[i].offset,
+		    model.animation.keyframe_count * sizeof(vec3_t));
+	}
+
 	munmap(file, len);
 	return model;
 }